MDGx MAX Speed WinDOwS
Glossary
of
Terms, Standards, Abbreviations + Acronyms

    This list consists of 3000+ computing, hardware, software, programming, file types + formats, internet, networking, web design, gaming, electronics, audio, music, communications, information, space exploration, engineering, education, academia, radio, cinema, television, video, animation, recording, graphics, imaging, photography, cinematography, arts, culture, literature, fantasy, science fiction, mythology, technology, sciences, research, mathematics, astronomy, cosmology, physics, chemistry, biology, ecology, genetics, medical sciences, neuroscience, cognitive science, behavioral sciences, psychology, philosophy, social sciences, anthropology, environmental science, artificial intelligence, virtual reality, cyberspace, cybersecurity, earth science, oceanology, paleontology, geography, geology, climatology, history, economy, commerce, transportation, social interaction, jargon, lingo, slang, terms, standards, abbreviations, acronyms, alphabetisms, initialisms, onomatopoeiae listed in Latin based alphabetical order, also available as GLOSSARY.TXT [plain text file], part of my ©Tricks + Secrets Files, FREEware:

      Windows 9x/NTx + DOS 7.xx/8.00:  W95-11D.EXE/W95-11D.ZIP 
      Windows/WfWG 3.1x + DOS 6.xx:  W31-11D.ZIP 

    NOTES:
STØP  CoronaVirus  C❂VID-19Global Climate ChangeDigital + Online Privacy, Safety + Security
STEMM ☻ CEIT
Glossaria, Dictionaria, Encyclopædia, Compendia, Referentia, Repositoria, Thesauria
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09
0D = Nil (Zero) Dimensional point (absent) representation: void of (none) axes coordinates.
0G = 0 (Zero) Generation analog radio/telecommunication technology standard (150-420 MHz frequency band, up to 600 Mb/sec data rate).
10 GigE = 10 (Ten) Gigabit Ethernet, also 10GbE, also 10GE (full duplex point to point networking transmission technologies) (IEEE).
1080i = 1920x1080 interlaced screen resolution (displays, monitors, HDTV).
1080p = 1920x1080 progressive scan screen resolution (displays, monitors, HDTV).
10GE = 10 (Ten) Gigabit Ethernet, also 10 GigE, also 10GbE (full duplex point to point networking transmission technologies) (IEEE).
10GbE = 10 (Ten) Gigabit Ethernet, also 10 GigE, also 10GE (full duplex point to point networking transmission technologies) (IEEE).
128-bit = 128 b (bits) wide (computer hardware + software architecture + instructions set).
16:9 = Wide digital cinema/TV display horizontal:vertical (letterbox) aspect ratio standard (see WAR).
16-bit = 16 b (bits) wide (computer hardware + software architecture + instructions set).
1D = Uni (One) (single) Dimensional linear representation: x axis coordinate.
1G = 1st (First) Generation analog radio/telecommunication technology standard (400-450 MHz frequency band, up to 700 Gb/sec data rate).
2019-nCoV = 2019 novel CoronaVirus, also SARS-CoV-2, also HCoV-19 (coronavirus strain responsible for COVID-19 airborne transmissible contagious infectious respiratory illness). STØP  CoronaVirus  C❂VID-19
2160p = 4096x2160 (cinema UHD) or 3840x2160 (TV UHD) progressive scan screen resolution (displays, monitors, cinema, UHDTV).
24p = High Definition 24 frames/sec progressive video (Sony/Panasonic) (also HiDef).
256-bit = 256 b (bits) wide (computer hardware + software architecture + instructions set).
286 = Intel 80286 processors, also 80286.
2D = Bi (Two) dimensional surficial (flat) representation: x + y axes coordinates.
2D-DNR = 2 (Two) Dimensional (temporal) Dynamic Noise Reduction (analog/digital video artifacts/static filtering/removal) (National Semiconductor).
2FA = Two Factor Authentication, also TFA (electronic verification method).
2G = 2nd (Second) Deneration digital broadband/telecommunication/wireless technology standard (2.4-2.9 GHz frequency band, up to 5 Gb/sec data rate) (3GPP).
2K = 2048x1080 (cinema UHD) and 1920x1080 (displays, monitors, TV HD) screen resolution.
2K (2) = 2000 (year).
2.5K = 3120x1440 (cinema UHD) and 2560x1440 (displays, monitors, TV QHD) screen resolution, also QHD, also Quad HD.
2K1 = 2001 (year).
2K2 = 2002 (year).
2K3 = 2003 (year).
2K4 = 2004 (year).
2K5 = 2005 (year).
2K6 = 2006 (year).
2K7 = 2007 (year).
2K8 = 2008 (year).
2K9 = 2009 (year).
32-bit = 32 b (bits) wide (computer hardware + software architecture + instructions set).
386 = Intel 80386 processors, also 80386 (SX/DX).
386MAX = Qualitas 386 Expanded Memory Manager (386MAX.SYS).
3D = Tri (Three) Dimensional spatial (voluminal) representation: x, y + z axes coordinates.
3DC = 3D Consortium (Sharp/Sanyo/Sony/Toshiba/Samsung/LG).
3D-DNR = 3 (Three) Dimensional (spatial) Dynamic Noise Reduction (analog/digital 3D/video artifacts/static filtering/removal) (National Semiconductor).
3dfx = 3D Graphics Interactive (Voodoo family 3D chipsets).
3DI = Tri (three) Dimensional Imaging.
3DIF = 3D Industry Forum (Intel/Adobe/Microsoft).
3DNow! = AMD K6/K7/K8/K9 CPU multimedia extensions.
3DOF = Three (3) Degrees Of Freedom (motion, direction + orientation in 3D space).
3DRAM = 3D Dynamic Random Access Memory.
3G = 3rd (Third) Generation digital broadband/telecommunication/wireless technology standard (3.5-3.95 GHz frequency band, up to 8 Gb/sec data rate) (3GPP).
3GIO = 3rd Generation Input/Output (PCI 3.0 or PCI Express or PCIe) bus architecture: 64-bit, 133/266 MHz, 6.6 GB/sec (Intel/IBM/Compaq/Microsoft/Dell).
3GPP = 3rd (Third) Generation Partnership Project telecommunications standards organizations (5G/GSM/UMTS/LTE/IMS).
3PS = 3rd Person Shooter game (computer, platform, online video gaming).
4:3 = Traditional analog TV display horizontal:vertical aspect ratio (old standard).
486 = Intel 80486 processors, also 80486 (DX/DX2/DX4).
4D = Quad (Four) Dimensional spatial (voluminal) representation: x, y, z + w axes coordinates.
4G = 4th (Fourth) Generation digital broadband/telecommunication/wireless technology standard (4-4.9 GHz frequency band, up to 10 Gb/sec data rate) (3GPP).
4K = 4096x3112 (cinema UHD) and 3840x2160 (displays, monitors, TV UHD) screen resolution.
4X = EXplore, eXpand, eXploit and eXterminate game (multiplayer/single player gaming).
512-bit = 512 b (bits) wide (computer hardware + software architecture + instructions set).
586 = Intel 80586 processors, also 80586 (Pentium/Pentium Pro).
5G = 5th (Fifth) Generation digital broadband/telecommunication/wireless technology standard (5-5.25 GHz frequency band, up to 30 Gb/sec data rate) (3GPP).
5K = 5120x3200 (cinema EHD) and 5120x2880 (displays, monitors, TV EHD) screen resolution.
64-bit = 64 b (bits) wide (computer hardware + software architecture + instructions set).
686 = Intel 80686 processors, also 80686 (Pentium II/III/IV).
6DOF = Six (6) Degrees Of Freedom (motion, direction + orientation in 3D space).
6G = 6th (Sixth) Generation digital broadband/telecommunication/wireless technology standard (30 GHz-3 THz frequency band, up to 1 Tb/sec data rate) (3GPP).
6K = 6144x3240 (cinema PHD) and 6144x3160 (displays, monitors, TV PHD) screen resolution.
720i = 1280x720 interlaced screen resolution (displays, monitors, HDTV).
720p = 1280x720 progressive scan screen resolution (displays, monitors, HDTV).
7-Zip = 7-Zip (compressed archive) file type + format, also 7Z (.7Z) (7-Zip).
7Z = 7-Zip (compressed archive) file type + format, also 7-Zip (.7Z) (7-Zip).
802 = Family of wired + wireless LAN/MAN/PAN/WAN devices connection interface networking standards, specifications + protocols (IEEE).
802.11 = Wi-Fi + mesh (long range wireless LAN/MAN/PAN/WAN) connection interface networking specifications (IEEE).
802.11p = WAVE (vehicular wireless networks) connection interface networking specifications (IEEE).
802.15 = Wireless (MAN/PAN/WAN/WSN) specialty connection interface networking specifications (IEEE).
802.15.1 = Bluetooth (short range wireless LAN) devices connection interface networking specifications (IEEE).
802.15.4 = LR-WPAN/Zigbee (short range wireless LAN) devices/sensors connection interface networking specifications (IEEE).
802.15.5 = Mesh (wired + wireless MAN/PAN/WAN) connectivity devices/nodes connection interface networking specifications (IEEE).
802.15.6 = Wireless (short range BAN/BSN/MBAN/WBAN) wearable devices/sensors connection interface networking specifications (IEEE).
802.15.7 = Visible light (wireless MAN/PAN/WAN) communication devices connection interface networking specifications (IEEE).
802.18 = Radio Regulatory TAG (long range wireless LAN/MAN/PAN/WAN) connection interface networking specifications (IEEE).
802.1X = Port based Network Access Control (wired + wireless LAN/MAN/PAN/WAN/WLAN) connection interface networking specifications (IEEE).
802.3 = Ethernet (wired LAN/MAN/PAN/WAN) connection interface networking specifications (IEEE).
80286 = Intel 80286 processors, also 286.
80386 = Intel 80386 processors, also 386 (SX/DX).
80486 = Intel 80486 processors, also 486 (DX/DX2/DX4).
80586 = Intel 80586 processors, also 586 (Pentium/Pentium Pro).
80686 = Intel 80686 processors, also 686 (Pentium II/III/IV).
8086 = Intel 8086 processors (first generation).
80X86 = Intel 32-bit (x86) processors, also 86, also x86 (32-bit compatible CPU + instructions set).
80X87 = Intel 32-bit (x86) X87 FPU mathematical coprocessor, also 87, also X87 (32-bit compatible CPU + instructions set).
86 = Intel 32-bit (x86) processors, also 80X86, also x86 (32-bit compatible CPU + instructions set).
87 = Intel 32-bit (x86) X87 FPU mathematical coprocessor, also 80X87, also X87 (32-bit compatible CPU + instructions set).
8K = 8192x5120 (cinema FHD) and 7680x4320 (displays, monitors, TV FHD) screen resolution.
9x = Windows 95, 95a OSR1, 95B OSR 2.0, 95B OSR 2.1, 95C OSR 2.5, 98, 98 SP1, 98 SE(U) + ME (Millennium Edition) Operating Systems (OSes) (Microsoft).
95 = Windows 95/95a OSR1/95B OSR 2.0/95B OSR 2.1/95C OSR 2.5 (Microsoft).
98 = Windows 98/98 SP1/98 SE(U) (Microsoft).
 🔝 
A
A2A = Analog to Analog (signal conversion/modulation technology).
A2D = Analog to Digital (signal conversion/modulation technology).
A3D = Aureal 3D surround sound technology.
AA = Anti-Aliasing edge smoothing technology (3D imaging/motion/photo/video).
AAAS = American Association for the Advancement of Science.
AAC = Advanced Audio Coding (enhanced MPEG-4 encoding).
AAF = Anti Aliasing Filter, also Optical Low Pass Filter (digital cinematography/photography/videography optical element, lens).
AAF (2) = Advanced Authoring format (Microsoft video).
AB = Bachelor of Arts (Latin: Baccalaureus Artium), also BA, also BAc, also AcB (undergraduate level academic degree).
ABF = Auto(matic) Back Focus (cinematography/photography/videography camera, device, recorder, lens).
ABWR = Advanced Boiling Water cooled Reactor (nuclear fission electrical energy power generator).
A/C = Alternating Current, also AC (cyclical sine wave reversible/variable electrical current).
AC = Alternating Current, also A/C (cyclical sine wave reversible/variable electrical current).
AC-3 = Advanced Codec (Audio Coding) 3 Dolby Digital 5.1 (5 + 1 = 6 channels) sound technology (3D spatial audio) (also AC3) (ATSC).
AC3 = Advanced Codec (Audio Coding) 3 Dolby Digital 5.1 (5 + 1 = 6 channels) sound technology (3D spatial audio) (also AC-3) (ATSC).
AC'97 = Audio Codec 1997 component specification (Intel).
AcB = Bachelor of Arts (Latin: Baccalaureus Artium), also BA, also BAc, also AB (undergraduate level academic degree).
ACC = Adaptive Cruise Control system (vehicle electronic technologies).
ACE = Archive Compressed Extension file type + format (.ACE) (WinACE).
ACK = ACKnowledgement (modem response).
ACL = Association for Computational Linguistics.
ACL (2) = Access Control List (Microsoft Windows NTx OSes running on NTFS).
ACLU = American Civil Liberties Union.
ACM = Association for Computing Machinery.
ACPI = Advanced Configuration Power Interface.
ACS = Astronomical Coordinate System (astronomy).
ACW = AntiClockWise rotation/revolution motion, also CCW (clock hands opposite direction/sense).
ADC = Analog to Digital Converter (signal conversion/modulation technology).
ADAS = Advanced Driver Assistance System (vehicle electronic technologies).
ADM = Auto(matic) Dynamic Metering (cinematography/photography/videography camera, device, recorder, lens) (Olympus).
aDNS = Anycast Domain Name System UDP protocol (networking: each IP can be routed/resolved to any number of DNS servers).
ADPCM = Adaptive Differential Pulse Code Modulation.
ADSL = Asymmetrical Digital Subscriber Line modem technology (1.1 MHz, 4 Mb/sec).
ADSL2+ = Asymmetrical Digital Subscriber Line version 2+ modem technology (2.2 MHz, 24 Mb/sec).
ADVD = Audio Digital Versatile (Video) Disc.
Adware = Ad(vertising) Software (unsolicited, unwanted, dishonest, false, fraudulent, illegal, abusive, deceptive, misleading, disguised, malicious).
AEAD = Authenticated Encryption with Additional Data (computer/information security).
AEB = Autonomous Emergency Braking (vehicle electronic technologies).
AEBS = Advanced (Automated) Emergency Braking System (vehicle electronic technologies).
AES = Advanced Encryption Standard instruction set (built into the CPU).
AESA = Active Electronically Scanned Array (computer controlled phased array antenna).
AF = Auto(matic) Focus (cinematography/photography/videography camera, device, recorder, lens).
AFAIA = As Far As I'm Aware.
AFAIC = As Far As I'm Concerned.
AFAIK = As Far As I know.
AFC = Away From Computer (Controller).
AFK = Away From Keyboard.
AFM = Atomic Force Microscope.
AFO = Away From Office.
AFP = Away From Phone.
AFP (2) = Apple Filing Protocol (Apple).
AFR = Alternate Frame Rendering (ATI Rage Fury MAXX).
AFRC = Armstrong Flight Research Center (NASA space field center, USA).
AFT = Authenticated Firewall Traversal (networking protocol application support layer).
AFW = Away From Work.
AGI = Artificial General Intelligence (hypothetical autonomous intelligent agent/computer/machine theoretically capable of surpassing human capabilities).
AGN = Active Galactic Nucleus (astronomy).
AGP = Accelerated Graphics Port technology (Intel).
AGP-1x = Accelerated Graphics Port technology 1st generation (AGP 1.0): 266 MB/sec bandwidth (Intel).
AGP-2x = Accelerated Graphics Port technology 2nd generation using sidebands (AGP 2.0): 533 MB/sec bandwidth (Intel).
AGP-4x = Accelerated Graphics Port technology 3nd generation using fast writes (AGP 3.0): 1.07 GB/sec bandwidth (Intel).
AGP-8x = Accelerated Graphics Port technology 4th generation (AGP 4.0): 2.14 GB/sec bandwidth (Intel).
AGRAS = AntiGlare AntiReflection AntiStatic screen treatment (CRT display).
AHA = Avoid Hasty Abstractions (computer/device software development principle).
AHCI = Advanced Host Controller Interface (SATA controllers).
AHR = Aqueous Homogeneous cooled Reactor (nuclear fission electrical energy power generator).
AHWR = Advanced Heavy Water cooled Reactor (nuclear fission electrical energy power generator).
A.I. = Artificial Intelligence, also AI (computer/machine hardware + software automation, imitation, recognition + simulation of human behavior, decision, interaction, learning + reasoning processes).
AI = Artificial Intelligence, also A.I. (computer/machine hardware + software automation, imitation, recognition + simulation of human behavior, decision, interaction, learning + reasoning processes).
AIE = Agence Internationale de l'Énergie, also IEA (International Energy Agency).
AIFF = Audio Interchange File Format lossless uncompressed audio file format standard (Apple).
AIT = Advanced Intelligent Tape (Sony).
AJAX = Asynchronous JavaScript And XML (web design technologies).
a.k.a. = Also known as, also aka, also AKA.
aka = Also known as, also a.k.a., also AKA.
AKA (2) = Also Known As, also a.k.a., also aka.
AL = Apache License (computer software) (ASF).
ALDC = Adaptive Lossless Data Compression (IBM).
ALMA = Atacama Large Millimeter Array (astronomical observatory complex) (NRAO/ESO).
alt = Alternate Character (computer, platform, online video gaming).
ALU = Arithmetic Logic Unit (computer, coprocessor + CPU architecture + instructions set).
A.M. = Ante Meridiem (Latin) time convention, also AM (before midday, before 12:00:00 o'clock noon).
AM = Ante Meridiem (Latin) time convention, also A.M. (before midday, before 12:00:00 o'clock noon).
AM (2) = Amplitude Modulation radio frequency waves with low audio fidelity (long, medium + short frequency wave bands).
AM (3) = Master of Arts (Latin: Magister Artium), also MA (graduate level academic degree).
AMA = Ask Me Anything.
AMD = Advanced Micro Devices Incorporated.
AMD64 = Intel 64-bit (x64) processors, also Intel 64, also x64, also x86-64 (64-bit compatible CPU + instructions set).
AMI = American Megatrends Incorporated.
AMOLED = Active Matrix Polymer Organic Light Emitting Diode display (Samsung).
AMP = Asymmetric MultiProcessing technology, also ASMP (computing).
AMP (2) = Accelerated Mobile Pages (HTML framework).
AMR = Audio Modem Riser slot (Intel Pentium III/IV 8XX chipsets).
AMV = Actions Media Video (proprietary video file format) (Actions Semiconductor/ALi).
AMV (2) = Animated/Anime/Animation Music Video.
ANC = Active Noise Control (Cancellation), also ANR, also NC (analog/digital audio artifacts/static filtering/removal).
AND = Paired AND +/- NO AND digital logic gate (nonvolatile memory) (electronics).
Android = Android cellular/mobile/portable devices open source Operating System based on modified open source Linux (Google).
ANI = Windows ANImated cursor graphic file type + format (.ANI) (Microsoft).
ANN = Artificial Neural Network/net (artificial intelligence).
ANR = Active Noise Reduction, also ANC, also NC (analog/digital audio artifacts/static filtering/removal).
ANSI = American National Standards Institute.
AOD = Advanced Optical Disc technology (Toshiba/NEC).
AOL = America OnLine.
AOMedia = Alliance for Open Media.
APG = Action Playing Game (multiplayer/single player gaming).
API = Application Programming Interface.
APIC = Advanced Programmable Interrupt Controller.
APM = Advanced Power Management.
Apple = Apple Inc.
APRS = Automatic Packet Reporting System (radio/GPS locator device).
APS = Active Pixel Sensor (active transistors photodetection image sensor).
APS-C = Advanced Photo System Type C image sensor format (25x16mm).
APSK = Amplitude and Phase Shift Keying (digital communications).
AR = AntiReflective (Antiglare, AntiReflection) optical coating (cinematography/photography/videography optical element, lens).
AR (2) = Augmented Reality (computer generated enhanced digital interactive simulated reality environment/experience).
ARAG = AntiReflection AntiGlare screen treatment (CRT display).
ARAS = AntiReflection AntiStatic screen treatment (CRT display).
ARC = Ames Research Center (NASA space field center, USA).
ARG = Alternate Reality Game (interactive, networked, multimedia/transmedia multiplayer/single player gaming).
ARM = Advanced (Acorn) RISC Machines (computer architecture).
ARP = Address Resolution Protocol (networking technology).
ARP (2) = Action Role Playing game (multiplayer/single player gaming).
ARPANET = Advanced Research Projects Agency Network (internet forerunner).
ARPG = Action Role Playing Game (multiplayer/single player gaming).
ARTS = Action Real Time Strategy game (multiplayer/single player gaming).
ASA = Former American Standards Association celluloid film/electronic sensor sensitivity to light numerical scale (cinematography/photography/videography camera, device, recorder).
AsAP = Asynchronous Array of simple Processors (parallel computing).
ASAP (2) = As Soon As Possible.
ASC = Active Signal Correction technology (Sony CRT display).
ASCII = American Standard Code for Information Interchange.
ASE = Agence Spatiale Européenne, also ESA (European Space Agency) (EU|UE).
ASF = Apache Software Foundation.
ASF (2) = Advanced Streaming Format (Microsoft NetShow/DirectVideo).
ASIC = Application Specific Integrated Circuit.
ASK = Amplitude Shift Keying (digital communications).
ASLR = Address Space Layout Randomization (computer security randomization algorithm).
ASMP = ASymmetric MultiProcessing technology, also AMP (computing).
ASP = Angle Sensitive Pixel (CMOS image sensor).
ASP (2) = Application Service Provider.
ASP (3) = Active Server Page (Microsoft).
ASP (4) = Average Selling Price.
ASP (5) = Advanced Sound Processor (Creative Labs).
ASPI = Advanced SCSI Programming Interface.
ASS = Advanced Sub Station alpha (ANSI/Unicode/UTF-8) subtitles file type + format (.ASS).
ASVD = Analog Simultaneous Voice and Data.
Async SRAM = Asynchronous Static Random Access Memory (CPU L2 cache).
AT = Advanced Technology (motherboard form factor).
AT (2) = Authenticated Transfer protocol (decentralized, open source networking technology) (Bluesky).
ATA = Advanced Technology Attachment technology (ANSI for Integrated Drive Electronics).
ATA/33 = Ultra ATA/Ultra DMA 33.33 MB/sec tranfer rate (EIDE/ATA hard disk controller/drive technology).
ATA/66 = Ultra ATA/Ultra DMA 66.66 MB/sec tranfer rate (EIDE/ATA hard disk controller/drive technology).
ATA/100 = Ultra ATA/Ultra DMA 100 MB/sec tranfer rate (EIDE/ATA hard disk controller/drive technology).
ATA/133 = Ultra ATA/Ultra DMA 133.33 MB/sec tranfer rate (EIDE/ATA hard disk controller/drive technology).
ATAPI = Advanced Technology Attachment Packet Interface.
ATB = Active Time Battle game (multiplayer/single player gaming).
ATC = Air Traffic Control.
Athlon = AMD Athlon K7 CPU.
ATI = ATI Technologies Inc.
ATM = Adobe Type Manager.
ATM (2) = Asynchronous Transfer Mode (networking).
ATN = Augmented Transition Network (computational linguistics).
ATSC = Advanced Television Systems Committee cable/satellite/terrestrial HDTV broadcast standards (North + South America + Asian Pacific).
ATSC 2.0 = Advanced Television Systems Committee revision 2.0 cable/satellite/terrestrial HDTV broadcast standards (North + South America + Asian Pacific).
ATSC 3.0 = Advanced Television Systems Committee revision 3.0 cable/satellite/terrestrial HDTV broadcast standards (North + South America + Asian Pacific).
ATSC-M/H = Advanced Television Systems Committee Mobile / Hanheld cable/satellite/terrestrial HDTV broadcast standards (North + South America + Asian Pacific).
ATV = Analog Broadcast TeleVision (old TV standard).
ATV (2) = Advanced Broadcast TeleVision (DTV, HDTV standard).
ATX = Advanced Technology EXtended (motherboard form factor).
AU = Astronomical Unit = Earth - Sun distance = 149597870700 m = 8.3 light minutes, also au (astronomy).
AU (2) = AUdio file format.
Audiocast = Spontaneous/scripted live/recorded online/shared digital audio/data educational/informative course/documentary/event/film/presentation/program.
Auto-HUD = Automotive Head(s) Up Display (vehicle vision system).
AUTOEXEC.BAT = AUTOmatically EXECuted BATch file (DOS, Microsoft MS-DOS + Windows 9x/NTx).
AUV = Autonomous Underwater (Undersea) Vehicle.
AUX = AUXiliary (configurable serial port).
AV = Autonomous Vehicle (automated/robotic, driverless/self driving, and/or remotely controlled/operated).
AVC = Advanced Video Coding H.264/AVC video compression standard (ITU/ISO/MPEG) (also H.264 + X.264).
AV1 = AOMedia Video 1 video coding/compression format (AOMedia).
Avatar = 3D/graphical/pictorial (icon, image, logo, photo) representation/symbol of character, persona, player, user (communication, gaming, online, internet, media).
AVI = Audio Video Interleave (Microsoft video file format).
AVIF = AV1 Image File type + format based on AOMedia Video 1 video coding/compression (.avif).
AVX = Advanced Vector eXtensions instruction set (built into the CPU).
AWR = Active Wide Range playback system (Toshiba CD-ROM).
AXCEL216 = Packard Bell AXCEL216 386/SX 25 MHz [my first PC 😉].
 🔝 
B
b = bit (binary digit): unit of digital information: 1 bit = 0 or 1.
B = Byte (Binary octet): unit of digital data: 1 Byte = 8 bits.
B2B = Business to Business, also BtoB.
B2C = Business to Consumer, also BtoC.
B2M = Business to Market, also BtoM.
B2P = Buy to Play game (computer, platform, online video gaming).
B4 = Before.
BA = Bachelor of Arts (Latin: Baccalaureus Artium), also BAc, also AB, also AcB (undergraduate level academic degree).
BAc = Bachelor of Arts (Latin: Baccalaureus Artium), also BA, also AB, also AcB (undergraduate level academic degree).
BAN = Body Area Network.
BASIC = Beginners' All purpose Symbolic Instruction Code high level general purpose computer programming language.
BAT = DOS/MS-DOS BATch program script file type + format (.BAT) (text/ASCII format).
Baud = Modem line (carrier) signaling high/low events/shifts per second.
BBS = Bulletin Board System.
BCC = Blind Carbon Copy (document, duplicate, e-mail, photo, scanned copy, clone).
BCD = Binary Coded Decimal interchange code, also BCDIC (6-bit encoding) (IBM).
BCDIC = Binary Coded Decimal Interchange Code, also BCD (6-bit encoding) (IBM).
BD = Blu-Ray Digital Versatile Disc technology, also Blu-ray (Sony/Philips/Hitachi/Sharp/Samsung).
BDA = BIOS Data Area.
BDA (2) = Blu-Ray Disc Association.
BD-R = Blu-Ray Disc Recordable Media technology (Sony/Philips/Hitachi/Sharp/Samsung).
BD-RE = Blu-Ray Disc Rewritable Media technology (Sony/Philips/Hitachi/Sharp/Samsung).
BD-ROM = Blu-Ray Disc Read Only Media technology (Sony/Philips/Hitachi/Sharp/Samsung).
BDXL = High Capacity Recordable and Rewritable Blu-Ray Disc [triple (100 GB) or quadruple (128 GB) layer].
BEDO = Burst Extended Data Out (DRAM).
BEEP = Blocks Extensible Exchange Protocol (network application protocols framework).
BeiDou = BeiDou Navigation Satellite System (China).
Bel = Unit of acoustic/sound level/pressure/power: 1 Bel = 10 dB (deciBels).
BEOL = Back End Of Line (integrated circuit electrical connection).
BER = Bit Error Rate (digital transmission, numerical).
BER (2) = Bit Error Ratio (digital transmission, percentage).
BGA = Ball Grid Array (242 pin Intel CPU).
BGM = BackGround Music (from online, streaming, television, theatrical, video documentary, film, program, series).
BGP = Border Gateway Protocol (path vector exchange routing + reachability networking standard).
BIC-TCP = Binary Increase Congestion Transmission Control Protocol (NCSU).
BIF = Binary Image Format file.
BINHEX = BINary HEXadecimal (BINary to ASCII data conversion).
BIOS = Basic Input Output System.
BIPM = Bureau International des Poids et Mesures (International Bureau of Weights and Measures).
BISDN = Broadband Integrated Services Digital Network (high speed telecommunications standards) (ITU).
BJT = Bipolar Junction Transistor (electronics).
BL = BSD License (computer software) (BSD).
Blog = Web log educational, informational internet/online/WWW document/page/publication/site, also weblog.
BLP = Bit Level Parallelism (parallel computing).
BLS = Boneh Lynn Shacham cryptographic authentication bilinear pairing signature encryption algorithm (data security).
Blu-Ray = Blu-Ray Digital Versatile Disc technology, also BD (Sony/Philips/Hitachi/Sharp/Samsung).
BMP = RGB/RLE encoded Microsoft Windows BitMap Picture file.
BMR = Ballistic Magneto-Resistive effect (Hewlett Packard/IBM/Siemens Hard Disk Drive technology).
BNN = Biological Neural network (natural intelligence).
BoM = Bill of Material (manufacturer costs).
BPI = Baseline Privacy Interface (DOCSIS encrypted communication specifications).
BPL = Broadband over Power Line communication technology (networking/internet digital data transmission).
BPOV = Biased Point Of View (dishonest, distorted, fictional, incomplete, nonfactual, opinionated, partial, partisan, prejudiced, subjective perspective/viewpoint).
bpp = bits per pixel.
BPP (2) = Binary Packet Protocol (SSH cryptographic encrypted network).
BPR = Bit Patterned Recording hard disk drive (Toshiba).
Bps = Bytes per second (B/sec).
bps = bits per second (b/sec).
BS = Bachelor of Science (Latin: Scientiae Baccalaureus), also BSc, also SB, also ScB (undergraduate level academic degree).
BSB = Back Side Bus (CPU to RAM motherboard bus).
BSc = Bachelor of Science (Latin: Scientiae Baccalaureus), also BS, also SB, also ScB (undergraduate level academic degree).
BSD = Berkeley Software Distribution [UNIX like GPL (free, open source) Operating System].
BSI = BackSide Illuminated sensor (digital cinematography/photography/videography camera, device, recorder).
BSN = Body Sensor Network.
BSoD = Blue Screen of Death [Microsoft Windows most dreaded "feature" 😎].
BSP = Base Service Provider Windows Sockets (Winsock) API.
BSS = Basic Service Set identifier, also BSSID (wireless LAN standard for devices sharing same network).
BSSID = Basic Service Set IDentifier, also BSS (wireless LAN standard for devices sharing same network).
BTAIM = Be That As It May.
BTL = Behind The Lens metering (cinematography/photography/videography camera, device, recorder, lens) (Pentax).
BtoB = Business to Business, also B2B.
BtoC = Business to Consumer, also B2C.
BtoM = Business to Market, also B2M.
BtP = Buy to Play game (computer, platform, online video gaming).
BTS = Behind The Scenes.
BTW = By The Way.
BTX = Balanced Technology EXtended (motherboard form factor).
Bus = Binary data gateway between hardware modules: CPU, chipset, RAM, I/O, etc.
BWR = Boiling Water cooled Reactor (nuclear fission electrical energy power generator).
 🔝 
C
°C = Degrees Celsius, also C (centigrade temperature scale measurement unit).
C = Atomic Carbon (Z=6 protons, tetravalent nonmetal chemical element, 12C = stable inorganic solid isotope at standard conditions).
C (2) = Degrees Celsius, also °C (centigrade temperature scale measurement unit).
C (3) = C high level general purpose computer programming language (IEC/ISO).
C++ = C + (plus) + (plus), also CPP high level general purpose computer programming language (IEC/ISO).
C2B = Consumer to Business, also CtoB.
C2C = Consumer to Consumer, also CtoC.
C2M = Consumer to Market, also CtoM.
C2PA = Coalition for Content Provenance and Authenticity (Adobe/BBC/Intel/Microsoft/Truepic).
CA = Confidentiality Agreement, also CDA, also NDA, also PIA, also SA (legally binding restrictive contract).
CaaS = Computing as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
CAB = CABinet lossless data compression file type + format (.CAB) (Microsoft).
CAD = Computer Aided Design (Drafting).
CADD = Computer Aided Design and Drafting.
CAESAR = Clean And Environmentally Safe Advanced Reactor (nuclear fission electrical energy power generator).
CAGD = Computer Aided Geometric Design (Drafting).
CAI = Computer Assisted (Aided) Instruction, also CALI.
CAI (2) = Content Authenticity Initiative (Adobe/New York Times).
CAL = Computer Assisted (Aided) Learning, also CALL.
CALI = Computer Assisted (Aided) Language Instruction, also CAI.
CALL = Computer Assisted (Aided) Language Learning, also CAL.
CAM = Computer Aided Manufacturing (Modeling, Machining).
CAMM = Compression Attached Memory Module (Dell/JEDEC).
CAMM2 = Compression Attached Memory Module 2 (2nd generation) (JEDEC).
CAN = Controller Area Network (array of microcontrollers).
CAN (2) = Campus Area Network.
CAPTCHA = Completely Automated Public Turing test to tell Computers and Human Apart (computing test for humans).
CAS = Column Access Strobe.
CAS (2) = Collision (pre-crash) Avoidance System (vehicle electronic technologies).
Cas9 = CRISPR associated protein 9, formerly Cas5, Csn1, Csx12 (enzyme with immunological defensive properties against DNA viruses + plasmids).
Catfishing = Catfish chase other fish species if bundled together, fake, fictitious, stolen digital, internet/online, legal, physical identity/impersonation/persona (with abusive, deceptive, disguised, dishonest, fraudulent, harmful, illegal, malicious, misleading intent/purpose).
CATOBAR = Catapult Assisted Take Off But (Barrier) Arrested Recovery aircraft, vehicle.
CATOVL = Catapult Assisted Take Off and Vertical Landing aircraft, vehicle.
CATV = Cable TeleVision (analog/digital video/audio signal transmitted through coaxial cable).
CAV = Constant Angular Velocity (Compact Disc).
CB7 = Comic Book reader sequential image viewer compressed archive 7-Zip file type + format (.7Z) (CDisplay).
CBA = Comic Book reader sequential image viewer compressed archive ACE file type + format (.ACE) (CDisplay).
CBC = Cipher Block Chaining mode (authenticated cryptographic encryption).
CBC-MAC = Cipher Block Chaining Message Authentication Code (authenticated cryptographic encryption).
CBR = Citizen(s) Band Radio (2 way radio transceiver + bands).
CBR (2) = Comic Book reader sequential image viewer compressed archive RAR file type + format (.RAR) (CDisplay).
CBT = Comic Book reader sequential image viewer compressed archive TAR file type + format (.TAR) (CDisplay).
CBZ = Comic Book reader sequential image viewer compressed archive ZIP file type + format (.ZIP) (CDisplay).
CC = Carbon Copy (document, duplicate, e-mail, photo, scanned copy, clone).
CC (2) = Creative Commons.
CCD = Charge Coupled Device (photo sensitive digital capacitive sensor).
CCFB = Cold Cathode Fluorescent Backlighting (LCD screen).
CCFL = Cold Cathode Fluorescent Lighting (LCD screen).
CCG = Collectible Card Game (board/role playing gaming).
CCITT = Commité Consultatif International du Télégraphe et Téléphonie, also ITTCC (International Telegraph and Telephony Consultative Committee).
CCM = Counter with CBC-MAC (authenticated cryptographic encryption).
CCMP = CTR mode with CBC-MAC Protocol (WPA cryptographic encryption).
CCS = Celestial Coordinate System (astronomy).
CCTV = Closed Circuit TeleVision (video surveillance).
CCW = CounterClockWise rotation/revolution motion, also ACW (clock hands opposite direction/sense).
CD = Compact Disc.
CD-DA = Compact Disc Digital Audio.
CDA = Confidential Disclosure Agreement, also CA, also NDA, also PIA, also SA (legally binding restrictive contract).
CDAF = Contrast Detection Auto(matic) Focus (cinematography/photography/videography camera, device, recorder, lens).
CDFS = CD-ROM File System (data CD).
CD-I = Compact Disc Interactive.
CDMA = Code Division Multiple Access (digital communications).
CDR = CorelDRAW! image file.
CDRAM = Cache Dynamic Random Access Memory.
CD-R = Compact Disc Recorder.
CD-RAM = Compact Disc Rewritable Access Media.
CD-ROM = Compact Disc Read Only Media.
CD-ROM/XA = Compact Disc Read Only Media EXtended Architecture (Sony/Philips/Microsoft).
CDR-ROM = Compact Disc Recorder and Read Only Media (ODC).
CD-RW = Compact Disc ReWritable.
CDN = Content Delivery (Distribution) Network (networked proxy servers and data centers).
CDSCC = Canberra Deep Space Communication Complex (NASA space communications complex, USA/Australia).
CDSL = Consumer Digital Subscriber Line modem technology (Rockwell).
Celeron = Intel Pentium II/III/IV Celeron CPU families (80686).
CEPT = European Conference of Postal and Telecommunications Administrations.
CERN = Conseil Européen pour Recherche Nucléaire, also EONR (European Organization for Nuclear Research).
CERT = Computer Emergency Response Team.
CF = CompactFlash PATA 166 MB/sec memory mass storage removable media cards (SanDisk).
CFA = CompactFlash Association.
CFast = CompactFast SATA 300-600 MB/sec memory mass storage removable media cards (CompactFlash Association).
CFC = ChloroFluoroCarbon (volatile halogenated hydrocarbons).
CFe = CompactFlash Express, also CFx PCIe 3.0 and NVMe 1 GB/sec memory mass storage removable media cards, also CFexpress (CFA).
CFexpress = CompactFlash Express, also CFe, also CFx PCIe 3.0 and NVMe 1 GB/sec memory mass storage removable media cards (CFA).
CFL = Compact (Chloro) Fluorescent Lamp (Light) [Argon (Ar) + Mercury (Hg) vapor mixture + Phosphor (P) coating].
CFML = Cold Fusion Markup Language.
CFx = CompactFlash Express, also CFe PCIe 3.0 and NVMe 1 GB/sec memory mass storage removable media cards, also CFexpress (CFA).
CG = Computer (generated) Graphics (imagery).
CGA = Color Graphics Adapter old computer display standard (640x200 pixels, 200p) (IBM).
CGI = Computer Generated Image (Imagery).
CGI (2) = Common Gateway Interface (HTTP/HTTPS web server + application communication + interaction standard).
CGM = CircumGalactic Medium (astronomy).
CGM (2) = Computer Graphics Metafile file type + format (.CGM).
CH4 = Molecular Carbon tetrahydride composed of 1 Carbon atom + 4 Hydrogen atoms (methane = stable organic natural gas at standard conditions; Z=6 protons, C = tetravalent nonmetal chemical element; Z=1 proton, H = monovalent nonmetal chemical element).
CHAP = Challenge Handshake Authentication Protocol (computer communications cryptographic verification).
Checksum = Fixed size data (hash sum) algorithm (cryptography).
CHM = Compiled HTML Help (Microsoft Windows 95/newer + Internet Explorer 5/newer).
CHS = Cylinder/Head/Sector (hard disk).
CIDR = Classless Inter Domain Routing (IP address allocation + routing method) (IETF).
CIFS = Common Internet File System.
CIM = Computer Integrated Manufacturing (machining, automation).
CIS = Conseil International des Sciences, also ISC (International Science Council).
CISA = Cybersecurity and Infrastructure Security Agency (USA).
CISC = Complex Instruction Set Computing (computer + CPU architecture).
CL = Computational linguistics (interdisciplinary academic study field).
CL (2) = Creative Labs.
Clearnet = Publicly accessible indexable (indexed) internet (see also Lightnet, Surface Web, Visible Web).
CLI = Command Line Interface (text based computer/device environment/platform/system API).
CLNS = ConnectionLess mode Network Service (OSI layer protocol) (ITU).
CLP = Windows CLiPboard bitmap file type + format (.CLP) (Microsoft).
CLV = Constant Linear Velocity (Compact Disc).
CM = CTR Mode, also ICM, also SIC (authenticated cryptographic encryption).
CMB = Cosmic Microwave Background (astronomy).
CMBR = Cosmic Microwave Background Radiation (astronomy).
CMC = Certificate Management over CMS (IETF).
CMD = Windows NTx DOS console CoMmanD line program script file type + format (.CMD) (text/ASCII/Unicode format).
CME = Coronal Mass Ejection (astronomy).
CMO = Central Massive Object (astronomy).
CMOS = Complementary Metal Oxide Semiconductor manufacturing process.
CMOS 7S = CMOS 7S manufacturing process (IBM).
CMOS-SOS = CMOS Silicon On Sapphire manufacturing process.
CMP = Chip MultiProcessing (more than 1 CPU per chip) (computing).
CMP (2) = Certificate Management Protocol (IETF).
CMS = Collision (pre-crash) Mitigation System (vehicle electronic technologies).
CMS (2) = ColorSync color Management System (Apple).
CMS (3) = Content Management System.
CMS (4) = Cryptographic Message Syntax (message encryption) (IETF).
CMY = Cyan Magenta Yellow subtractive primary colors (hues) combination encoding model.
CMYK = Cyan Magenta Yellow blacK subtractive primary colors (hues) combination encoding model.
CNC = Computer Numerical Control (machining, automation).
CNN = Convolutional Neural Network (artificial intelligence).
CNO = Cis Neptunian Object (astronomy).
CNR = Communication and Networking Riser specification (Intel Pentium III/IV chipsets).
CO = Molecular Carbon monoxide composed of 1 Carbon atom + 1 Oxygen atom (stable inorganic gas at standard conditions; Z=6 protons, C = tetravalent nonmetal chemical element; Z=8 protons, O = bivalent nonmetal chemical element).
CO2 = Molecular Carbon dioxide composed of 2 Carbon atoms + 1 Oxygen atom (stable inorganic gas at standard conditions; Z=6 protons, C = tetravalent nonmetal chemical element; Z=8 protons, O = bivalent nonmetal chemical element).
Co-op = Cooperative play or Cooperative video game (multiplayer/single player gaming).
COA = Certificate Of Authenticity (Microsoft OEM OS + software).
COBOL = COmmon Business Oriented Language.
CODAR = Coastal Ocean Dynamics Applications Radar.
CODEC = Digital video COmpressor and DECompressor (Intel Indeo).
COFF = Common Object File Format (UNIX 32-bit + 64-bit).
COM = Serial COMmunication Port.
COM (2) = Component Object Model (Microsoft).
COMINT = COMmunications INTelligence (gather, decrypt, analyze, integrate, exploit management).
CON = CONsole (display).
CONFIG.SYS = CONFIGuration SYStem file (DOS, Microsoft MS-DOS + Windows 9x/NTx).
CONS = Connection Oriented Network Service (OSI layer protocol) (ITU).
Core = Intel Core CPU family (x86 Yonah Pentium + Celeron).
Core 2 = Intel Core 2 CPU family (x86 + x64 Merom/Conroe/Allendale/Penryn/Wolfdale Pentium + Celeron).
Core i3 = Intel Core i3 CPU family, also i3 (x86 + x64 Nehalem/Clarkdale/Arrandale).
Core i5 = Intel Core i5 CPU family, also i5 (x86 + x64 Nehalem/Lynnfield/Clarkdale/Arrandale).
Core i7 = Intel Core i7 CPU family, also i7 (x86 + x64 Bloomfield/Lynnfield/Clarksfield/Arrandale/Gulftown/Nehalem/Westmere/Sandy).
Core i9 = Intel Core i9 CPU family, also i9 (x86 + x64 Skylake/Coffee Lake/Cascade Lake/Comet Lake).
Coronavirus = Group of related positive sense single stranded RNA with helical symmetry nucleocapsid viruses contagious to mammals (including humans) and birds responsible for transmissible infectious respiratory illnesses. STØP  CoronaVirus  C❂VID-19
CORP = Competitive Online Role Playing game (multiplayer/single player gaming).
CORPG = Competitive Online Role Playing Game (multiplayer/single player gaming).
CORS = Cross Origin Resource Sharing (HTTP header request attribute).
COTS = Commercial(ly available) Off The Shelf (computer/device hardware/software built in feature/functionality).
COVID-19 = CoronaVirus Disease 2019, also 2019-nCoV (airborne transmissible contagious infectious respiratory illness caused by SARS-CoV-2 virus). STØP  CoronaVirus  C❂VID-19
CPI = Crash Position Indicator (radio/GPS locator device).
CPL = Circular PoLarizer filter (cinematography/photography/videography optical element, lens).
CPM = Continuous Phase Modulation (digital communications).
CPP = C + (plus) + (plus), also C++ high level general purpose computer programming language (IEC/ISO).
cps = Characters Per Second.
CPT = Corel Photo Paint image file format.
CPU = Central Processing Unit (processor).
CR = Carriage Return control character sequence (text/ASCII/ANSI/EBCDIC/Unicode).
CRC = Cyclic(al) Redundancy Check (error detection/correction code).
CRDT = Conflict free Replicated Data Type (automatic, independent, concurrent, converging, sychronizing, updating information structures across multiple computers, networks).
CRISPR = Clustered Regularly Interspaced Short Palindromic Repeats (bacteriophages infected prokaryotes DNA sequences) (genetic engineering).
CRISPR-Cas9 = CRISPR DNA sequencing genome (gene) editing technology (genetic engineering).
CR+LF = Carriage Return + Line Feed control character sequence, also CRLF (text/ASCII/ANSI/EBCDIC/Unicode).
CRLF = Carriage Return Line Feed control character sequence, also CR+LF (text/ASCII/ANSI/EBCDIC/Unicode).
CRT = Cathode Ray Tube.
CS = CompuServe.
CSA = Cloud Security Alliance.
CSC = Compact System photographic imaging + video Camera.
CSD = Circuit Switched Data transmission (digital communications).
CSE = Client Side Encryption (sender side cryptography technology).
CSE (2) = Programmable Custom Search Engine (Google Search).
CSLIP = Compressed Serial Line Internet Protocol (networking).
CSP = Cryptographic Service Provider.
CSP (2) = Content Security Policy HTTP computer security standard (W3C).
CSRF = Cross Site Request Forgery, also XSRF (1 click malicious HTTP 3rd party/external/federated/outsourced attack, exploit, request, session riding method).
CSS = Chirp Spread Spectrum (digital telecommunications).
CSS (2) = Cascading Style Sheets HTML specifications (W3C).
CSS1 = Cascading Style Sheets mechanism level 1 (W3C).
CSS2 = Cascading Style Sheets mechanism level 2 (W3C).
CSS3 = Cascading Style Sheets mechanism level 3 (W3C).
CSV = Comma Separated Values text file format.
CTBTO = Comprehensive nuclear Test Ban Treaty Organization preparatory commission [ONU|OVN|UN(O)].
CTC = Click To Call (Click To Chat) (WWW based communications).
CTD = Click To Dial (WWW based communications).
CTI = Cyber Threat Intelligence.
CtoB = Consumer to Business, also C2B.
CtoC = Consumer to Consumer, also C2C.
CTOL = Conventional Take Off and Landing aircraft, vehicle.
CtoM = Consumer to Market, also C2M.
CTOVL = Conventional Take Off and Vertical Landing aircraft, vehicle.
CTT = Click To Text (WWW based communications).
CUDA = Compute Unified Device Architecture (NVidia parallel computing architecture, platform + API).
CULTINT = CULTural INTelligence (gather, decrypt, analyze, integrate, exploit management).
CUR = Windows static CURsor graphic file type + format (.CUR) (Microsoft).
CUT = Dr. Halo picture file type + format (.CUT).
C.V. = Curriculum Vitae (course of life) (Latin) short summary of a person's career (accomplishments, background, experience, expertise, skills), qualifications and education, also CV, also résumé (summary, brief) (French).
CV = Curriculum Vitae (course of life) (Latin) short summary of a person's career (accomplishments, background, experience, expertise, skills), qualifications and education, also C.V., also résumé (summary, brief) (French).
CW = ClockWise rotation/revolution motion (clock hands same direction/sense).
CYBINT = CYBer INTelligence, also CYBERINT (gather, decrypt, analyze, integrate, exploit management).
CYBERINT = CYBER INTelligence, also CYBINT (gather, decrypt, analyze, integrate, exploit management).
 🔝 
D
D2A = Digital to Analog (signal conversion/modulation technology).
D2D = Device to Device (communications, networking).
D2D (2) = Disk to Disk (data backup/cloning technology).
D2D (3) = Digital to Digital (signal conversion/modulation technology).
D2D (4) = Direct to Disk (recording/playback technology).
D3D = DirectX 3D APIs (Microsoft Windows 95/newer).
D&D = Dungeons & Dragons game, also DnD (multiplayer/single player gaming).
DaaS = Desktop as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
DAC = Digital to Analog Converter (signal conversion/modulation technology).
DAMP = Don't Abstract Methods Prematurely or Descriptive And Meaningful Phrases (computer/device software development principle).
Darknet = Publicly inaccessible anonymous, nonindexable (nonindexed) internet (part of Dark Web).
DARPA = Defense Advanced Research Projects Agency (DoD, USA).
DAT = Digital Audio Tape.
dB = deciBel: 10 dB = 1 Bel.
DBA = Dynamic Bandwidth Allocation (digital communications).
DbaaS = Database as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
DBN = Deep Belief Network (artificial intelligence).
DBS = Digital Broadcasting System.
DBS (2) = Direct Broadcast Satellite (digital video/audio signal transmitted through geostationary orbiting satellite).
D/C = Direct Current, also DC (invariable continuous unidirectional electrical current).
DC = Direct Current, also D/C (invariable continuous unidirectional electrical current).
DCCP = Datagram Congestion Control Protocol (computer communications message transport layer) (IETF).
DCE = Distributed Computing Environment networking software system (Apollo/IBM/DEC).
DCE (2) = Data Communications Equipment (modem to modem speed).
DCH = Declarative Componentized Hardware drivers (Microsoft Windows 10/newer UWP compatible apps).
DCTCP = Data Center TCP (networking congestion control) (IETF).
DD+ = Dolby Digital plus Dolby Digital 5.1 (5 + 1 = 6 channels) sound technology, also DDP, also EAC3 (3D spatial audio) (ATSC).
DD-CD = Double Density Compact Disc: 1.3 GB (Sony).
DD-R = Double Density Compact Disc Recorder (Sony).
DD-ROM = Double Density Compact Disc Read Only Media (Sony).
DD-RW = Double Density Compact Disc Rewritable (Sony).
DDC = Display Data Channel.
DDE = Dynamic Data Exchange.
DDF = Diamond Directive File (Microsoft Windows Setup CAB/IEAK developer kits). IEAK
DDK = Driver Developers Kit (computer programming).
DDMA = Distributed Direct Memory Access technology.
DDNS = Dynamic DNS (DNS automatic updating method).
DDoS = Distributed Denial of Service (malicious network cyber attack).
DDP = Dolby Digital Plus Dolby Digital 5.1 (5 + 1 = 6 channels) sound technology, also DD+, also EAC3 (3D spatial audio) (ATSC).
DDR-SDRAM = Double Data Rate Synchronous Dynamic Random Access Memory.
DDR2-SDRAM = Double Data Rate 2 (2nd generation) Synchronous Dynamic Random Access Memory.
DDR3-SDRAM = Double Data Rate 3 (3rd generation) Synchronous Dynamic Random Access Memory.
DDR4-SDRAM = Double Data Rate 4 (4th generation) Synchronous Dynamic Random Access Memory.
DDSS = Dolby Digital Surround Sound Advanced Codec 3 5.1 (5 + 1 = 6 channels) sound technology (3D spatial audio) (ATSC).
Deep Web = Publicly inaccessible anonymous, nonindexable (nonindexed) internet (see also Darknet).
DEK = Data Encryption Key.
DES = Data Encryption Standard.
DFS = Distributed File System used by Distributed Computing Environment (DCE) (Apollo/IBM/DEC).
DHCP = Dynamic Host Configuration Protocol (networking).
DHMO = DiHydrogen MonOxide, used as parody 😉 [ρ=1 g/cm3 (g/ml), pure molecular water = composed of 2 Hydrogen atoms + 1 Oxygen atom, neutral stable inorganic liquid at standard conditions].
DHT = Distributed Hash Table (decentralized scalable data storage and lookup system based on unique key-value pairs).
DHTML = Dynamic HyperText Markup Language (W3C).
DIB = RGB/RLE encoded Microsoft Windows Device Independent Bitmap.
DIB (2) = Dual Independent Bus architecture (Intel Pentium Pro/II/III/IV).
DID = Decentralized IDentifier unique 16-byte (128-bit) encrypted integer reference label (IEC/IETF/ISO/TOG software + hardware identification standard).
DIFx = Driver Install Frameworks technology (Microsoft).
DIG = Digital Imaging Group (now I3A).
DIMM = Dual In-line Memory Module (integrated circuit technology).
DIN = Deutsches Institut für Normung (German Institute for Standards).
DIP = Dual In-line Package (integrated circuit packaging method).
DIRID = DIRectory IDentifier unique 16-byte (128-bit) encrypted integer reference label (IEC/IETF/ISO/TOG software + hardware identification standard).
DisplayID = display/monitor data structure description, also EDID (VESA standard).
DisplayPort = Digital display interface, also DP (audio, text + video connector) (VESA).
DisplayPort 1.1 = Digital display interface version 1.1, also DP 1.1 (audio, text + video connector) (VESA).
DisplayPort 1.2 = Digital display interface version 1.2, also DP 1.2 (audio, text + video connector) (VESA).
DisplayPort 1.2a = Digital display interface version 1.2a, also DP 1.2a (audio, text + video connector) (VESA).
DisplayPort 1.3 = Digital display interface version 1.3, also DP 1.3 (audio, text + video connector) (VESA).
DisplayPort 1.4 = Digital display interface version 1.4, also DP 1.4 (audio, text + video connector) (VESA).
DisplayPort 1.4a = Digital display interface version 1.4a, also DP 1.4a (audio, text + video connector) (VESA).
DisplayPort 2.0 = Digital display interface version 2.0, also DP 2.0 (audio, text + video connector) (VESA).
DisplayPort 2.1 = Digital display interface version 2.1, also DP 2.1 (audio, text + video connector) (VESA).
DisplayPort 2.1a = Digital display interface version 2.1a, also DP 2.1a (audio, text + video connector) (VESA).
DIVX = DIgital Video eXpress (discontinued DVD technology).
DivX (2) = Digital Video eXpress encoder/decoder technology.
DIY = Do It Yourself (non professional creating, designing, building, modifying, customizing, improving, upgrading, maintaining, repairing by oneself using mass produced tools and materials).
D/L = DownLoad(s).
DL = Deep Learning (machine learning automation, imitation + simulation of human learning processes + decision making + prediction).
DL (2) = Down Low.
DLC = Data Link Control (networking layer protocol).
DLC (2) = DownLoadable Content (computer, platform, online video gaming).
DLED = Direct lit Light Emitting Diode display.
DLL = Data Link Layer (digital transmission layer).
DLL (2) = DownLoadable Level (computer, platform, online video gaming).
DLL (3) = Dynamic Link Library (Microsoft Windows).
DLNA = Digital Living Network Alliance multimedia devices digital media sharing interoperability guidelines (Microsoft/Hewlett Packard/Sony/Nokia/Philips/Cisco/Toshiba/Samsung).
DLP = Digital Light Processing technology, also DMD (Texas Instruments).
DLP (2) = Deep Learning Processor (A.I./machine learning computer/device hardware accelerator).
DLS = DownLoadable Sounds technology (PCI MIDI).
DM = Direct Message.
DMA = Direct Memory Access.
DMD = Digital Micromirror Device, also DLP (Texas Instruments).
DME = Distance Measuring Equipment (radio/GPS navigation technology).
DME (2) = Direct Memory Execution (Intel I-740).
DMF = Distribution Media Format: high density floppy disk (Microsoft).
DMI = Desktop Management Interface.
DMT = Discrete MultiTone modulation broadcast/fiber optic/telecommunications technologies.
DMTF = Desktop Management Task Force.
DMX = DeMultipleXer (DeMultipleXor) (DeMuXer) (analog/digital simplex input to multiplex output converter/selector).
DNA = DeoxyriboNucleic Acid (double helix chained polynucleotide essential polymer carrier of replicable biological genetic instructions characteristic to all known life forms).
DNA (2) = Distributed interNet Applications architecture (Microsoft Windows).
DNC = Direct Numerical Control (machining, automation).
DnD = Dungeons and Dragons game, also D&D (multiplayer/single player gaming).
DNG = Digital NeGative Adobe RAW image type + format (.DNG) based on TIFF 6.0 standard.
DNINT = Digital Network INTelligence (gather, decrypt, analyze, integrate, exploit management).
DNN = Deep Neural Network (artificial intelligence).
DNR = Dynamic Noise Reduction (analog/digital 3D/audio/communications/imaging/video artifacts/static filtering/removal) (National Semiconductor).
DNS = Domain Name System (or Service) (internet DN ➜ IP translator, networking).
DNS-SD = Domain Name System based Service Discovery (networking).
DNSSEC = Domain Name System Security Extensions (secure extensions specifications, networking) (IETF).
DNT = Do Not Track (internet privacy request/signal standard).
DOCSIS = Data Over Cable Service Interface Specification standards (ITU).
DOF = Depth Of Field (3D cinematography/photography/videography).
DoH = DNS over HTTPS network security protocol.
DOI = Digital Object Identifier (persistent global unique identifier symbology) (ISNI/ISO).
DOM = Document Object Model (W3C).
DOS = Disk Operating System (text based command line console).
DoS (2) = Denial of Service (malicious network cyber attack).
DoT = DNS over TLS network security protocol.
DP = Digital display interface, also DisplayPort (audio, text + video connector) (VESA).
DP 1.1 = Digital display interface version 1.1, also DisplayPort 1.1 (audio, text + video connector) (VESA).
DP 1.2 = Digital display interface version 1.2, also DisplayPort 1.2 (audio, text + video connector) (VESA).
DP 1.2a = Digital display interface version 1.2a, also DisplayPort 1.2a (audio, text + video connector) (VESA).
DP 1.3 = Digital display interface version 1.3, also DisplayPort 1.3 (audio, text + video connector) (VESA).
DP 1.4 = Digital display interface version 1.4, also DisplayPort 1.4 (audio, text + video connector) (VESA).
DP 1.4a = Digital display interface version 1.4a, also DisplayPort 1.4a (audio, text + video connector) (VESA).
DP 2.0 = Digital display interface version 2.0, also DisplayPort 2.0 (audio, text + video connector) (VESA).
DP 2.1 = Digital display interface version 2.1, also DisplayPort 2.1 (audio, text + video connector) (VESA).
DP 2.1a = Digital display interface version 2.1a, also DisplayPort 2.1a (audio, text + video connector) (VESA).
dpcm = Dots per centimeter (digitizing/electronic image/video device/display spatial measured density).
DPhil = Doctor of Philosophy (Latin: Philosophiae Doctor), also PhD, also Ph.D. (highest level academic degree).
dpi = Dots per inch, also DPI (1 inch = 2.54 cm) (digitizing/electronic image/video device/display spatial measured density).
DPI (2) = Dots per inch, also dpi (1 inch = 2.54 cm) (digitizing/electronic image/video device/display spatial measured density).
DPI (3) = Deep Packet Inspection (networking data processing/verification).
DPLSS = Dolby Pro Logic Surround Sound 4.1 (4 + 1 = 5 channels) sound technology (3D spatial audio).
DPMA = Dynamic Power Management Architecture (Intel PCI/AGP chipsets).
DPMI = DOS Protected Mode Interface.
DPMS = VESA Display Power Management Signaling (video).
DPWS = Devices Profile for Web Services (OASIS).
DRAM = Dynamic Random Access Memory.
DR-DOS = DeviceLogics (Caldera Digital Research) Disk Operating System (text based command line console).
Drive-TIP = Drive Temperature Indicator Processor (IBM hard drive).
DRL = Deep Reinforcement Learning (artificial intelligence).
DRM = Digital Rights Management copy protection technologies.
DRP = Distribution and Replication Protocol (networking).
DRW = Micrografx DRaW image file type + format (.drw).
DRY = Don't Repeat Yourself (computer/device software development principle).
DS3D = DirectSound 3D APIs (Microsoft Windows 95/newer).
DSC = Digital Servo Control (Toshiba CD-ROM).
DSD = Direct Stream Digital pulse density modulation encoding (Sony/Philips).
DS/DD = Double Sided Double Density (floppy disk technology: 720 KB).
DS/HD = Double Sided High Density (floppy disk technology: 1.44 MB).
DSL = Digital Subscriber Line modem technology.
DSLM = Digital Single Lens Mirrorless photographic imaging + video camera, also MILC (digital cinematography/photography/videography camera, device, recorder).
DSLR = Digital Single Lens Reflex photographic imaging + video camera (digital mirror prism camera).
DSN = Deep Space Network (NASA worldwide facilities network, USA/Spain/Australia).
DSO = Deep Sky Object (astronomy).
DSP = Digital Signal Processor.
DSP (2) = Delivery Service Partner (OEM).
DSRC = Dedicated Short Range Communications (direct wireless technology) (IEEE).
DSS = Digital Satellite System.
DSS (2) = Digital Signature Standard certificate.
DSSS = Direct Sequence Spread Spectrum (digital communications).
DST = Daylight Saving Time (warm season temporary clock advancement).
DSVD = Digital Simultaneous Voice and Data.
DSX = Dual SimpleX (bidirectional one direction at a time broadcast/radio/telephone telecommunications) (ITU).
DTD = Document Type Definition.
DtD (2) = Direct to Disc (film, streaming, television, video).
DTDMA = Dynamic Time Division Multiple Access (digital communications).
DTE = Data Terminal Equipment (modem to computer speed).
DTF = Distributed Terascale Facility high speed TeraGrid network (IBM/Qwest/Intel).
DTL = Diode Transistor Logic (electronics).
DTP = DeskTop Publishing.
DTR = Data Transfer Rate (throughput).
DTR (2) = Discrete Track Recording (Toshiba hard disk).
DTR (3) = Desktop Replacement Computer.
DTS = Digital Theater Systems discrete Dolby Digital 5.1 (5 + 1 = 6 channels) surround sound technology (3D spatial audio).
DTS-ES = Digital Theater Systems Extended Surround discrete Dolby Digital 6.1 (6 + 1 = 7 channels) surround sound technology (3D spatial audio).
DTS-HD = Digital Theater Systems High Definition discrete Dolby Digital 7.1 (7 + 1 = 8 channels) surround sound technology (3D spatial audio).
DTT = Digital Terrestrial Television, also DTTB, also DTTV.
DTTB = Digital Terrestrial Television Broadcasting, also DTT, also DTTV.
D-TTL = Digital Through The Lens (flash) metering (cinematography/photography/videography camera, device, recorder, lens) (Nikon).
DTTV = Digital Terrestrial TeleVision, also DTT, also DTTB.
DTV = DeskTop Video.
DTV (2) = Digital TeleVision.
DtV (3) = Direct to Video (film, streaming, television, video).
DualDisc = Digital Versatile Disc (audio) + Compact Disc two sided (hybrid) (Sony).
DUN = Dial-Up Networking (Microsoft Windows).
DVB = Digital Video Broadcasting (European standard) (ETSI).
DVB-C = Digital Video Broadcasting Cable (European standard) (ETSI).
DVB-C2 = Digital Video Broadcasting Cable second generation (2) (European standard) (ETSI).
DVB-H = Digital Video Broadcasting Handheld (mobile) (European standard) (ETSI).
DVB-I = Digital Video Broadcasting and Internet media streaming (European standard) (ETSI).
DVB-IPDC = Digital Video Broadcasting for IP Data Casting (European standard) (ETSI).
DVB-MC = Digital Video Broadcasting Multipoint distribution Cable delivery (European standard) (ETSI).
DVB-MS = Digital Video Broadcasting Multipoint distribution Satellite delivery (European standard) (ETSI).
DVB-NGH = Digital Video Broadcasting Next Generation Handheld (mobile) (European standard) (ETSI).
DVB-S = Digital Video Broadcasting Satellite (European standard) (ETSI).
DVB-S2 = Digital Video Broadcasting Satellite second generation (2) (European standard) (ETSI).
DVB-S2X = Digital Video Broadcasting Satellite second generation (2) eXtension (European standard) (ETSI).
DVB-SH = Digital Video Broadcasting Satellite Handheld (mobile) (European standard) (ETSI).
DVB-T = Digital Video Broadcasting Terrestrial (European standard) (ETSI).
DVB-T2 = Digital Video Broadcasting Terrestrial second generation (2) (European standard) (ETSI).
DVD = Digital Versatile (Video) Disc.
DVD-2 = Second (2nd) generation Digital Versatile (Video) Disc.
DVD-A = Digital Versatile Disc Audio.
DVD-R = Digital Versatile (Video) Disc Recordable 4.7 GB (Hitachi/NEC/Pioneer/Samsung/Sharp).
DVD-RAM = Digital Versatile (Video) Disc Rewritable Access Media.
DVD-ROM = Digital Versatile (Video) Disc Read Only Media.
DVD-RW = Digital Versatile (Video) Disc ReWritable 4.7 GB (Hitachi/NEC/Pioneer/Samsung/Sharp).
DVD+R = Digital Versatile (Video) Disc Recordable 4.7 GB (Philips/Mitsubishi/Sony/Ricoh/Yamaha).
DVD+RW = Digital Versatile (Video) Disc ReWritable 4.7 GB (Philips/Mitsubishi/Sony/Ricoh/Yamaha).
DVD+R DL = Digital Versatile (Video) Disc ReWritable Double Layer 8.5 GB (Philips/Mitsubishi).
DVI = Digital Visual Interface.
DVI (2) = Digital Video Interactive (Intel).
DVR = Digital Video Recorder.
DVVD = Direct View Video Display (CRT/LCD/LED/TV display).
DWPD = Device/Drive Writes Per Day (nonvolatile memory mass storage media life expectancy).
DX = DupleX, also FDX (simultaneous bidirectional broadcast/radio/telephone telecommunications) (ITU).
DX (2) = X86 Intel CPU with FPU (386/DX, 486/DX).
DX (3) = DirectX APIs (Microsoft Windows 95/newer).
DX3D = DirectX 3D APIs (Microsoft Windows 95/newer).
DXF = AutoDesk 3D CAD(D) picture File type + format (.DXF).
DXR2 = Dynamic eXtended Resolution 2 technology (Creative Labs DVD).
DXTC = S3 Direct3D Texture Compression APIs (S3 Savage3D/2000).
DXVA = DirectX Video Acceleration hardware video decoding (Microsoft Windows 98/newer).
DYK = Did You Know?
 🔝 
E
E2EE = End to End Encryption (both ends encrypted communication system).
E2PROM = Electrically Erasable Programmable Read Only Memory, also EEPROM.
EaaS = Everything as a Service, also XaaS [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
EAC3 = Enhanced Advanced Codec (Audio Coding) 3 Dolby Digital 5.1 (5 + 1 = 6 channels) sound technology, also DD+, also DDP (3D spatial audio) (ATSC).
EAMR = Energy Assisted Magnetic Recording hard disk drive (Western Digital).
EAN = European Article Number (scannable digital barcode unique identifier symbology).
EAP = Extensible Authentication Protocol (computer networking communications cryptographic verification) (IETF).
EAP-AKA = Extensible Authentication Protocol Authentication and Key Agreement (computer networking communications cryptographic verification) (IETF).
EAP-AKA' = Extensible Authentication Protocol Authentication and Key Agreement prime (computer networking communications cryptographic verification) (IETF).
EAP-EKE = Extensible Authentication Protocol Encrypted Key Exchange (computer networking communications cryptographic verification) (IETF).
EAP-FAST = Extensible Authentication Protocol Flexible Authentication via Secure Tunneling (computer networking communications cryptographic verification) (IETF).
EAP-GTC = Extensible Authentication Protocol Generic Token Card (computer networking communications cryptographic verification) (IETF).
EAP-IKEv2 = Extensible Authentication Protocol Internet Key Exchange version 2 (computer networking communications cryptographic verification) (IETF).
EAP-MD5 = Extensible Authentication Protocol Message Digest algorithm 5 (computer networking communications cryptographic verification) (IETF).
EAP-NOOB = Extensible Authentication Protocol Nimble Out Of Band (computer networking communications cryptographic verification) (IETF).
EAP-POTP = Extensible Authentication Protocol Protected One Time Password (computer networking communications cryptographic verification) (IETF).
EAP-PSK = Extensible Authentication Protocol Pre-Shared Key (computer networking communications cryptographic verification) (IETF).
EAP-PWD = Extensible Authentication Protocol PassWorD (computer networking communications cryptographic verification) (IETF).
EAP-SIM = Extensible Authentication Protocol Subscriber Identity Module (computer networking communications cryptographic verification) (IETF).
EAP-TLS = Extensible Authentication Protocol Transport Layer Security (computer networking communications cryptographic verification) (IETF).
EAP-TTLS = Extensible Authentication Protocol Tunneled Transport Layer Security (computer networking communications cryptographic verification) (IETF).
EAX = Environmental Audio EXtensions (Creative Labs Live!/Audigy/Extigy/X-Fi DirectSound 3D surround sound APIs).
EBCDIC = Extended Binary Coded Decimal Interchange Code (8-bit character encoding) (IBM).
EBDA = Extended BIOS Data Area.
eBGP = Exterior (External) Border Gateway Protocol, also EBGP (path vector exchange routing + reachability internet networking standard).
EBGP = Exterior (External) Border Gateway Protocol, also eBGP (path vector exchange routing + reachability internet networking standard).
EBIOS = Extended Basic Input/Output System.
EBML = Extensible Binary Meta Language (binary equivalent to XML).
EBMT = Example Based Machine Translation (computational linguistics).
e-Book = Electronic Book, also eBook (digital or converted/copied from analog file/publication).
eBook = Electronic Book, also e-Book (digital or converted/copied from analog file/publication).
EBR = Extended Boot Record (HDD/SSD/NVMe/nonvolatile memory mass storage media partition table layout for drives/partitions/volumes > 2 TB).
ECAD = Electronic Computer Aided Design (integrated circuit).
ECC = Error Correction (Correcting) Code (verification method).
ECHS = Enhanced Cylinder/Head/Sector (hard drive > 1024 cylinders).
ECMA = European Computer Manufacturers Association.
ECMAScript = ECMA JavaScript programming language standard (ECMA-262).
ECN = Explicit Congestion Notification (TCP/IP protocol extension) (IETF).
ECP = Extended Capabilities Port.
ECS = Equatorial Coordinate System (astronomy).
ED = EnDing (afterword, closing, epilogue, finishing, stopping, terminating bit, credits, element, passage, portion, section, segment).
EDA = Electronic Design Automation (integrated circuit).
EDAC = Error Detection And Correction (computer science + communications).
EDC = Error Detection Code.
EDGE = Explicit Data Graphic Execution architecture (IBM CPU).
EDGE (2) = Enhanced Data Rates for GSM Evolution, also EGPRS, also 2.75G (digital communications) (ETSI).
EDI = Electronic Data Interchange (information exchange standards).
EDID = Extended Display Identification Data, also DisplayID (VESA standard).
EDO = Extended Data Out (DRAM).
e-Doc = Electronic Document, also eDoc (digital or converted/copied from analog file/publication).
eDoc = Electronic Document, also e-Doc (digital or converted/copied from analog file/publication).
EDRAM = Enhanced Dynamic Random Access Memory.
eDRAM (2) = Embedded Dynamic Random Access Memory.
EECS = Enhanced Elliptical Correction System (Sony CRT).
EEPROM = Electrically Erasable Programmable Read Only Memory, also E2PROM.
EFF = Electronic Frontier Foundation (international non profit digital rights group).
EFI = Extensible Firmware Interface computer/device BIOS technology (Intel).
EFVS = Enhanced Flight Vision System, also EVS (airborne/avionics).
e.g. = Exempli gratia (Latin) = for example (for instance, example given) (English).
EGA = Extended Graphics Adapter old computer display standard (640x350 pixels, 350p) (IBM).
EGPRS = Enhanced General Packet Radio Service, also EDGE (digital communications) (ETSI).
eGPU = External Graphics Processing Unit controller enclosure (Thunderbolt/ExpressCard interface).
EHD = Expert High Definition, also Expert HD, also 5K (digital TV standard: 2880 lines).
EHF = Extremely High Frequency (millimeter band) radio wave bands 30-300 GHz (ITU).
EIA = Electronics Industries Association.
EICA = Enhanced Intellight Cooler Architecture.
EIDE = Enhanced Integrated Device Electronics (Hard Disk Drive interface).
EIGRP = Enhanced Interior (Internal) Gateway Routing Protocol (advanced distance vector exchange networking standard) (Cisco).
EIS = Electronic Image Stabilization technology (digital cinematography/photography/videography).
EISA = Extended Industry Standard Architecture.
EISCA = Enhanced Intelligent System Cooler Architecture (CPU heatsink).
ELB = Emergency Locator Beacon, also ELT (radio/GPS locator device).
ELED = Edge (lit) Light Emitting Diode display/monitor/screen.
ELF = Extremely Low Frequency (kilometer band) radio wave bands 3-30 Hz (ITU).
ELF (2) = Executable (Extensible) and Linkable file Format (UNIX/Linux/BSD/Solaris 32-bit).
ELINT = ELectronic INTelligence (gather, decrypt, analyze, integrate, exploit management).
ELT = Emergency Locator Transmitter, also ELB (radio/GPS locator device).
ELT (2) = Extremely Large Telescope (astronomical observatory complex) (ESO).
EM = ElectroMagnetic (energy, field, frequency, oscillation, pulse, radiation, spectrum, wave).
EM64T = Extended Memory 64-bit Technology (Intel 64-bit CPU).
e-Mag = Electronic Magazine, also eMag (digital or converted/copied from analog periodical file/publication).
eMag = Electronic Magazine, also e-Mag (digital or converted/copied from analog periodical file/publication).
E-mail = Electronic mail, also email.
Email = Electronic mail, also e-mail.
EMB = Extended Memory Block.
EMBM = Environment Mapped Bump Mapping (Matrox G400/G800 3D chipsets).
EMBR = Extended Master Boot Record (HDD/SSD/NVMe/nonvolatile memory mass storage media partition table layout for drives/partitions/volumes > 2 TB).
EMC = ElectroMagnetic Compatibility (limitation of electromagnetic energy unintentional effects).
EMF = ElectroMagnetic Field.
EMI = ElectroMagnetic Interference.
EMM = Expanded Memory Manager.
EMM386 = 386 Expanded Memory Manager (EMM386.EXE) (Microsoft).
eMMC = Embedded MultiMediaCard nonvolatile memory mass storage media standard.
Emoji = Emotag, emoticon (ideogram, logogram, picon, pictogram, smiley) graphical/pictorial (icon, image, logo) representation/symbol (communication, online, internet, media).
Emoticon = Emotion icon (emoji, icon, image, logo, text) graphical/pictorial representation/symbol of facial disposition/emotion/expression (communication, online, internet, media).
EMP = ElectroMagnetic Pulse, also TED (brief burst of electromagnetic energy).
EMR = ElectroMagnetic Radiation (synchronized oscillations of electric and magnetic fields/waves of different wavelengths).
EMS = ElectroMagnetic Spectrum (range of frequencies of electromagnetic radiation/waves with different wavelengths).
EMS (2) = Expanded Memory Specifications (DOS/MS-DOS/Microsoft Windows).
ENOR = Exclusive NOR (NOT +/- NOT OR) digital logic gate, also EXNOR, also NXOR, also XAND, also XNOR (nonvolatile memory) (electronics).
ENP = Explained Normal Phenomenon (identified, known aerial objects or phenomena).
EOF = End Of File (computer operating system convention) (UNIX).
EOL = End Of Line control character sequence (text/ASCII/ANSI/EBCDIC/Unicode).
EOL (2) = End Of Life (merchandising, products).
EOM = End Of Message (digital communications convention) (e-mail).
EONR = European Organization for Nuclear Research, also CERN (Conseil Européen pour Recherche Nucléaire).
EOR = Exclusive OR, also EXOR, also XOR (nonvolatile memory) (electronics).
EOS = End Of Sale (merchandising, products).
EOT = End Of Transmission (digital communications convention) (UNIX).
EOT (2) = Embedded OpenType font (Microsoft).
EOTF = Electro-Optical Transfer Function of periodic sine wave pattern of light projected through optical system.
EP = Extended Play vinyl disc/record (33+⅓ or 45 rpm, 10/12 in = 25/30 cm, full size, medium capacity analog sound gramophone/phonograph/record player storage medium).
EPA = Environmental Protection Agency (USA).
EPBR = Extended Partition Boot Record (HDD/SSD/NVMe/nonvolatile memory mass storage media partition table layout for drives/partitions/volumes > 2 TB).
EPIC = Explicitly Parallel Instruction Computing (Intel Itanium 2 CPU).
EPIRB = Emergency Position Indicating Radio Beacon (radio locator device).
EPL = Eclipse Public License (computer software) (Eclipse).
ePMR = Energy Assisted Perpendicular Magnetic Recording hard disk drive (Western Digital).
EPN = Enterprise Private Network.
EPP = Enhanced Parallel Port.
EPROM = Erasable Programmable Read Only Memory.
EPS = Encapsulated PostScript File type + format (.EPS).
ePub = Electronic Publication file type + format (.epub).
e-Reader = Electronic Book Reader, also eReader (software program, mobile/portable electronic device).
eReader = Electronic Book Reader, also e-Reader (software program, mobile/portable electronic device).
ESA = European Space Agency, also ASE (Agence Spatiale Européenne) (EU|UE).
eSATA = External Serial Advanced Technology Attachment Disk Drive.
eSATAp = Power over eSATA (external SATA computer/device power port interface connector).
ESCD = Extended System Configuration Data (ROM BIOS).
ESD = ElectroStatic Discharge.
ESDI = Enhanced System Device Interface (hard disk).
ESDRAM = Enhanced Synchronous Dynamic Random Access Memory.
ESO = European Southern Observatory (network of astronomical observatory complexes) (EU|UE).
ESP = E-mail Service Provider.
eSRAM = Embedded Static Random Access Memory.
ESRL = Earth System Research Laboratories (NOAA, USA).
ESS = Extended Service Set identifier (wireless LAN standard for devices sharing same network).
ETA = Estimated Time of Arrival.
etc. = Et cetera (Latin) = and the others (and other things, and the rest) (English).
ETD = Estimated Time of Departure.
Ethernet = Array of organized wired computer LAN/MAN/PAN/WAN networking systems and technologies consisting of standards, protocols, devices and connection methods (Xerox).
ETSI = European Telecommunications Standards Institute, also IENT (Institut Européen des Normes de Télécommunications) (EU|UE).
E-TTL = Evaluative Through The Lens (flash) metering (cinematography/photography/videography camera, device, recorder, lens) (Canon).
EU = European Union, also UE (Union Européenne).
eUFS = Embedded Universal Flash Storage flash memory storage technology (Samsung).
EULA = End User License Agreement (Microsoft).
EUV = Extreme UltraViolet lithography (micro electronics).
EV = Electric (powered) Vehicle.
EVD = Enhanced Versatile (Video) Disc (China).
EVF = Electronic View Finder previews image directly through device sensor, same as captured frame (cinematography/photography/videography).
EVR = Enhanced Video Renderer hardware video decoding (Microsoft Windows Vista/newer).
EVS = Enhanced Vision System, also EFVS (airborne/avionics).
eVTOL = electric Vertical Take Off and Landing aircraft, vehicle.
EXE = EXEcutable file type + format (.EXE).
exFAT = Extended File Allocation Table 64-bit (HDD, SSD, NVMe, nonvolatile memory mass storage media).
EXIF = EXchangeable Image File digital metadata standard (JEIDA/JEITA/CIPA).
EXNOR = Exclusive NOR (NOT +/- NOT OR) digital logic gate, also ENOR, also NXOR, also XAND, also XNOR (nonvolatile memory) (electronics).
EXOR = Exclusive OR, also EOR, also XOR (nonvolatile memory) (electronics).
ext = Linux extended File System (old standard).
ext2 = Linux extended File System version 2.0 standard.
e-Zine = Electronic magaZine, also eZine (digital only periodical publication).
eZine = Electronical magaZine, also e-Zine (digital only periodical publication).
 🔝 
F
ƒ = Focal length (opening) [ƒ] ÷ (clear) aperture diameter [Ø] = optical system light gathering ability value, also ƒ-number, also ƒ-ratio, also ƒ-stop (cinema/photographic/video camera/recorder lens).
°F = Degrees Fahrenheit, also F (imperial temperature scale measurement unit).
F = Degrees Fahrenheit, also °F (imperial temperature scale measurement unit).
F2F = Friend to Friend (data sharing network).
F2P = Free to Play game (computer, platform, online video gaming).
FAQ = Frequently Asked Questions.
FAO = Food and Agriculture Organization [ONU|OVN|UN(O)].
FAST = Five hundred meter (500 m) Aperture Spherical Telescope (astronomical observational instrument) (China).
FAST-20 = Fast SCSI-3 Parallel Interface technology.
FAT = File Allocation Table disk File System (Microsoft).
FAT12 = File Allocation Table 12-bit (MS-DOS 3.0x/4.0x) (Microsoft).
FAT16 = File Allocation Table 16-bit (MS-DOS 5.00/6.xx) (Microsoft).
FAT32 = File Allocation Table 32-bit (Windows 95B/newer) (Microsoft).
FATA = Fibre Attached Technology Adapted Hard Disk Drive interface (Seagate/Hewlett Packard).
FB-DIMM = Fully Buffered Dual In-line Memory Module (integrated circuit technology).
FBR = Fast Breeder cooled Reactor (nuclear fission electrical energy power generator).
FCBS = File Control BlockS (Microsoft MS-DOS internal CONFIG.SYS command).
FC-AL = Fibre Channel Arbitrated Loop (Ultra Fast SCSI).
FCC = Federal Communications Commission (USA).
FC-PGA = Flip Chip Pin Grid Array package (Intel Pentium III/IV CPU).
FC-PH = Fibre Channel PHysical and signaling interface (SCSI-3).
FCW = Forward Collision (pre-crash) Warning system (vehicle electronic technologies).
FD = Floppy Disk.
FDB = Fully Buffered DIMM Dynamic Random Access Memory technology (Intel Blackford Pentium IV chipsets).
FDC = Floppy Drive Controller.
FDD = Frequency Division Duplexing (different frequencies one at a time bidirectional broadcast/radio telecommunications).
FDD (2) = Floppy Disk Drive.
FDDI = Fiber Distributed Data Interface.
FDH = Full Domain Hash (RSA based cryptographic authentication randomized encryption algorithm) (data security).
FDM = Frequency Division Multiplexing (different frequencies simultaneous bidirectional broadcast/radio telecommunications) (MBOA).
FDX = Full DupleX, also DX (simultaneous bidirectional broadcast/radio/telephone telecommunications) (ITU).
FEC = Forward Error Correction (error control method).
FED = Field Emission Display.
FEOL = Front End Of Line (integrated circuit electrical connection).
FERAM = FerroElectric Dynamic Random Access Memory (Infineon/Toshiba).
FET = Field Effect Transistor (electronics).
FF = Form Feed control character sequence (text/ASCII/ANSI/EBCDIC/Unicode).
FFC = Flat Field Correction, also NUC (infrared/IR/thermal video camera/recorder artifacts/noise/static filtering/removal).
FFNN = Feed Forward Neural Network (artificial intelligence).
FGFET = Floating Gate Field Effect Transistor (electronics).
FGMOS = Floating Gate Metal Oxide Semiconductor (electronics).
FHD = Full High Definition, also Full HD, also 8K (digital TV standard: 4320 lines).
FHSS = Frequency Hopping Spread Spectrum (digital communications).
FIFO = First In First Out.
Fingerprinting = Digital, internet/online/remote (unique) device/machine, personal/private identity/user data/information collection, identification, surveillance + tracking methods (for abusive, deceptive, disguised, dishonest, fraudulent, harmful, illegal, malicious, misleading, profitable, spying intent/purpose).
FININT = FINancial INTelligence (gather, decrypt, analyze, integrate, exploit management).
FLAC = Free Lossless Audio Codec (compressed audio without loss of quality).
FLAC (2) = Free Lossless Audio Codec file type + format (.flac, .fla).
F/LOSS = Free/Libre and Open Source Software, also FLOSS.
FLOSS = Free/Libre and Open Source Software, also F/LOSS.
FM = Frequency Modulation radio frequency waves with high audio fidelity (high, very high + ultra high + super high frequency wave bands).
FMA = Fused Multiply Add extension to SIMD instruction set (built into the CPU).
FMD = Fluorescent Multilayer Disc optical technology (Constellation 3D).
FMD-ROM = Fluorescent Multilayer Disc Read Only Media (Constellation 3D 140 GB CD-ROM).
FMS = Flexible Manufacturing System (machining, automation).
FMV = Full Motion Video.
ƒ-number = Focal length (opening) [ƒ] ÷ (clear) aperture diameter [Ø] = optical system light gathering ability value, also ƒ, also ƒ-ratio, also ƒ-stop (cinema/photographic/video camera/recorder lens).
F/OSS = Free and Open Source Software, also FOSS.
FOSS = Free and Open Source Software, also F/OSS.
FOV = Field Of View (cinematography/photography/videography).
FPD = Flat Panel Display.
FPE = File Protection Error.
FPGA = Field Programmable Gate Array (integrated circuit module technology).
FPM = Fast Page Mode (DRAM).
fps = frames per second.
FPS (2) = First Person Shooter game (multiplayer/single player gaming).
FPTV = Front Projection TeleVision (TV display).
FPVD = Front Projection Video Display (TV display).
FPU = Floating Point Unit (coprocessor).
FRAM = Ferroelectric Random Access Memory.
Frame-buffer = 1st + 2nd dimensions/height + width/x + y axes memory (2D video).
ƒ-ratio = Focal length (opening) [ƒ] ÷ (clear) aperture diameter [Ø] = optical system light gathering ability value, also ƒ, also ƒ-number, also ƒ-stop (cinema/photographic/video camera/recorder lens).
FSA = Finite State Automaton, also FSM (computational model).
FSAA = Full Screen Anti-Aliasing edge smoothing (3D imaging/motion/photo/video).
FSB = Front Side Bus (CPU to I/O motherboard bus).
FSF = Free Software Foundation (GNU).
FSM = Finite State Machine, also FSA (computational model).
ƒ-stop = Focal length (opening) [ƒ] ÷ (clear) aperture diameter [Ø] = optical system light gathering ability value, also ƒ, also ƒ-number, also ƒ-ratio (cinema/photographic/video camera/recorder lens).
FTFY = Fixed That For You.
FTP = File Transfer Protocol server client communications standard (ftp:).
FtP (2) = Free to Play game (computer, platform, online video gaming).
FTPS = File Transfer Protocol Secure server client communications standard (ftps:) (SSL + TLS technologies).
Full-Duplex = Two way modem communication protocol (echo-plex).
FvF = Faction versus Faction (multiplayer/single player gaming).
FX = Special effect(s), also SFX (visual arts, computing).
FXT1 = Advanced Texture Compression technology (3dfx Voodoo4/5/6 3D video).
FYI = For Your Information.
 🔝 
G
g = Gravity (Gravitational) force [g=9.80665 m/sec2] (gravitational force equivalent, measurement unit of standard gravity).
G = Universal Gravitational constant (gravitational force empirical physical constant).
G2G = Got to Go.
G-force = Gravity (Gravitational) force [g=9.80665 m/sec2] (gravitational force equivalent).
GAI = Generative Artificial Intelligence, also GenAI (creation of synthetic audio, data, imagery, text, video).
Galileo = Galileo Global Navigation Satellite System (EU|UE).
GALS = Globally Synchronous Locally Synchronous (electronic circuit).
GART = Graphics Address (Aperture) Remapping Table, also GTT (AGP + PCIe graphics/video card/controller).
GAST = Global Average Surface Temperature, also GMST, also GST.
GB = GigaByte (1 GB = 1024 MegaBytes = 1048576 KiloBytes).
GBG = Geo(Location) Based (Enabled) Game, also LBG, also LEG (GPS tracking + navigation multiplayer/single player gaming).
GBps = GigaBytes per second (GB/sec).
gbps = gigabits per second (Gb/sec).
GBT = Green Bank Telescope (astronomical observatory complex) (NRAO).
GCAR = Ground Control Approach Radar.
GCR = Galactic Cosmic Rays (astronomy).
GCR (2) = Gas Cooled Reactor (nuclear fission electrical energy power generator).
GCT = Geocentric Coordinate Time, also TCG (Temps Coordonnée Géocentrique) (IAU).
GDDR = Graphics Double Data Rate Random Access Memory (NVidia).
GDDR-II = Graphics Double Data Rate Random Access Memory 2nd generation (NVidia GeForceFX).
GDDR-III = Graphics Double Data Rate Random Access Memory 3rd generation (ATI Radeon 9500/9700/9900).
GDDR4 = Graphics Double Data Rate 4 (4th generation) Synchronous Dynamic Random Access Memory (Samsung).
GDDR5 = Graphics Double Data Rate 5 (5th generation) Synchronous Dynamic Random Access Memory (Samsung).
GDI = Graphics Device Interface (Microsoft Windows).
GDOI = Group Domain Of Interpretation (key management cryptographic protocol) (IETF).
GDR-SDRAM = Gigabyte Data Rate Synchronous Dynamic Random Access Memory.
GDSCC = Goldstone Deep Space Communications Complex (NASA ground station, USA).
GEM = Ventura/GEM image file.
GenAI = Generative Artificial Intelligence, also GAI (creation of synthetic audio, data, imagery, text, video).
GEO = Geostationary (Geosynchronous) Equatorial Orbit (astronomy).
GEOINT = GEOspatial INTelligence (gather, decrypt, analyze, integrate, exploit management).
GFR = Gas Fast cooled Reactor (nuclear fission electrical energy power generator).
GHG = GreenHouse Gas(es) (greenhouse effect: infrared radiant energy absorbent, heat trapping atmospheric gases + vapors).
GIF = Graphics Interchange Format file type + format (.GIF) (CompuServe).
GIS = Geographic Information System (computerized geographic data).
GISS = Goddard Institute for Space Studies (NASA interdisciplinary research institute, USA).
Glide = 3dfx Voodoo family proprietary 3D APIs.
G.Lite = G.992.2 1.4 Mb/sec Digital Subscriber Line ADSL modem technology (ITU).
GLONASS = Global Navigation Satellite System (Russia).
GM = General MIDI technology.
GM (2) = GameMaster or Game Master or Game Moderator (multiplayer/single player gaming).
GMDSS = Global Maritime Distress and Safety System (international automated emergency signal communication system).
GML = Geography Markup Language (OGC).
GMO = Genetically Modified Organism (genetic engineering).
GMR = Graphite Moderated cooled Reactor (nuclear fission electrical energy power generator).
GMR (2) = Giant Magneto-Resistive effect (IBM hard drive technology).
GMST = Global Mean Surface Temperature, also GAST, also GST.
GMT = Greenwich Mean Time, renamed UTC (London, United Kingdom mean solar time, former international time standard).
GN = Guide Number (photographic flash full power brightness/intensity measurement/rating using standard parameters/variables).
GND = Graduated Neutral Density filter (digital cinematography/photography/videography).
GNSS = Global Navigation Satellite System.
GNU = GNU's Not UNIX (UNIX like Operating System + free software collection).
GPC = Global Privacy Control (internet privacy request/signal standard).
GPF = General Protection Fault (Microsoft Windows).
GPGP = General Purpose computing Graphics Processing unit, also GPGPU (NVidia).
GPGPU = General Purpose computing Graphics Processing Unit, also GPGP (NVidia).
GPL = General Public License (computer software) (GNU).
GPLv2 = General Public License v2 (computer software) (GNU).
GPLv3 = General Public License v3 (computer software) (GNU).
GPR = Ground Penetrating Radar.
GPRS = General Packet Radio Service, also 2.5G (digital communications) (ETSI).
GPS = Global Positioning System (satellite based radio navigation system) (USA).
GPT = GUID Partition Table (HDD/SSD/NVMe/nonvolatile memory mass storage media partition table layout).
GPT (2) = Generative Pre-trained Transformer (computational linguistics, computerized predictive LLM) (OpenAI).
GPU = Graphics Processing Unit (NVidia GeForce/Quadro/Titan families 2D/3D display/video chipsets).
GRB = Gamma Ray Burst (astronomy).
GRC = Glenn Research Center (NASA space research field center, USA).
GSFC = Goddard Space Flight Center (NASA space complex, USA).
GSM = Global System for Mobile Communications (digital communications) (ETSI).
GSO = GeoStationary (GeoSynchronous) Orbit (astronomy).
GST = Global Surface Temperature, also GAST, also GMST.
GTIN = Global Trade Item Number (scannable digital barcode unique identifier symbology).
GTMHR = Gas Turbine Modular Helium cooled Reactor (nuclear fission electrical energy power generator).
GTO = Geostationary Transfer Orbit (astronomy).
GTS = Giga Texel Shader (NVidia GeForce2/newer 3D technology).
GTT = Graphics Translation Table, also GART (AGP + PCIe graphics/video card/controller).
GUI = Graphical User Interface, also UI [2D (flat)/3D (spatial) computer/device environment/platform/system API].
GUID = Globally Unique IDentifier unique 16-byte (128-bit) encrypted integer reference label (IEC/IETF/ISO/TOG software + hardware identification standard).
GvG = Group versus Group (multiplayer/single player gaming).
GvG (2) = Guild versus Guild (multiplayer/single player gaming).
GVIF = Gigabit Video InterFace (Sony LCD).
GVS = (Open) Gemini Visual System, also OpenGVS (computer programming 3D graphics + video architecture layout + API) (3D Perception).
 🔝 
H
H = Atomic Hydrogen (Z=1 proton, monovalent nonmetal, lightest + most abundant chemical element, H2 = stable inorganic molecular gas at standard conditions).
H2 = Molecular Hydrogen composed of 2 Hydrogen atoms (stable inorganic gas at standard conditions, Z=1 proton , H = monovalent nonmetal, lightest + most abundant chemical element).
H.264 = H.264/AVC video compression standard (ITU/ISO/MPEG) (also AVC + X.264).
H.265 = H.265/HEVC video compression standard (ITU/ISO/MPEG) (also HEVC + X.265).
H.266 = H.266/VVC video compression standard (Fraunhofer/ITU/ISO/MPEG) (also VVC + X.266).
H2O = Molecular (di)Hydrogen (mon)oxide composed of 2 Hydrogen atoms + 1 Oxygen atom [ρ=1 g/cm3 (g/ml), pure molecular water = neutral stable inorganic liquid at standard conditions; Z=1 proton, H = monovalent nonmetal chemical element; Z=8 protons, O = bivalent nonmetal chemical element].
HAHO = High Altitude High Opening (airborne parachute jump).
HAL = Hardware Abstraction Layer (Microsoft Direct3D virtual 3D video accelerator interface APIs).
HALE = High Altitude Long Endurance (aerial aircraft/vehicle).
Half-Duplex = One way modem communication protocol (simplex or local-echo).
HAN = Home Area Network.
HALO = High Altitude Low Opening (airborne parachute jump).
HAMR = Heat Assisted Magnetic Recording hard disk drive (Seagate).
HART = Highway Addressable Remote Transducer protocol (transport + traffic management sensor networking technology).
HAVi = Home Audio Video interoperability (entertainment APIs).
HBM = High Bandwidth Memory 1st generation (128 GB/sec bandwidth) (AMD/Hynix).
HBM-PIM = High Bandwidth Memory with Processing In Memory (2 TB/sec bandwidth) (Samsung).
HBM2 = High Bandwidth Memory 2nd generation (256 GB/sec bandwidth) (AMD/Hynix).
HBM2e = High Bandwidth Memory 2nd generation evolutionary (410 GB/sec bandwidth) (Samsung/Hynix).
HBM3 = High Bandwidth Memory 3rd generation (820 GB/sec bandwidth) (AMD/Hynix).
HBM3 Gen2 = High Bandwidth Memory 3rd generation Generation 2 (1.2 TB/sec bandwidth) (Micron).
HBM3e = High Bandwidth Memory 3rd generation evolutionary (1 TB/sec bandwidth) (AMD/Hynix).
HBP = Human Brain Project.
HCD = Hyper CD-ROM 1 PB multilayer 3D optical compact disc (Storex).
HCFC = HydroChloroFluoroCarbon (volatile halogenated hydrocarbons).
HCO = HelioCentric (solar) Orbit (astronomy).
HCoV-19 = Human CoronaVirus 2019, also SARS-CoV-2, also 2019-nCoV (coronavirus strain responsible for COVID-19 airborne transmissible contagious infectious respiratory illness). STØP  CoronaVirus  C❂VID-19
HD = Hard Disk (Drive).
HD (2) = High Definition.
HDA = High reliability Hard Disk Assembly.
HD Audio = High Definition Audio (Intel).
HD VMD = High Definition Versatile Multilayer Disc technology (New Medium Enterprises).
HD-BURN = 1.4 GB CD-R/CD-RW technology (Sanyo).
HD-DVD = High Definition Digital Versatile Disc discontinued technology (Toshiba/NEC/Sanyo/Memory-Tech).
HDC = Hard Disk Controller.
HDCP = High bandwidth Digital Content Protection (Intel/Silicon Image).
HDD = Hard Disk Drive.
HDLC = High Level Data Link Control (synchronous networking layer protocol) (ISO).
HDMI = High Definition Multimedia Interface digital surround audio, text + video interface (Hitachi/Matsushita/Philips/Sony/RCA/Toshiba).
HD-PLC = High Definition Power Line Communication (Carrier) technology (networking/internet digital data transmission).
HDR = High (expanded, extended, increased, wide) Dynamic Range 8 bits/sample (8-bit) audio + visual audio/imaging/motion/photo/video standard (analog + digital acoustics/cinematography/photography/videography).
HDR (2) = High (expanded, extended, increased, wide) Dynamic Range image/photo obtained by combining multiple same subject different exposures/parameters frames (digital cinematography/photography/videography).
HDR10 = High Dynamic Range 10 media profile 10 bits/sample (10-bit) color depth (digital acoustics/cinematography/photography/videography).
HDR10+ = High Dynamic Range 10 Plus media profile 10 bits/sample (10-bit) color depth + dynamic metadata (digital acoustics/cinematography/photography/videography).
HD-ROM = High Definition Read Only Media (Norsam Technology).
HDRR = High (expanded, extended, increased, wide) Dynamic Range real time Rendering of virtual environments (digital + 3D audio, imaging, motion + video).
HD-SDI = High Definition Serial Digital Interface.
HDSL = High bit rate Digital Subscriber Line modem technology.
HD-SLR = High Definition Digital Single Lens Reflex photographic imaging + video camera with HD video recording.
HDSS = Holographic Data Storage System (IBM).
HDTV = High Definition TeleVision (digital TV standard: 1200 lines).
HDVD = High Definition Digital Video Disc (Sonic/Ravisent).
HDVP = High Definition Video Processor (NVidia GeForce2/3/4/FX 3D video chipsets).
HDX = Half DupleX (semiduplex) (one at a time bidirectional broadcast/radio/telephone telecommunications) (ITU).
HEDT = High End DeskTop high performance personal computers (Intel).
HEIF = High Efficiency Image File type + format (.heif) based on H.265/HEVC video compression standard (ITU/ISO/MPEG).
HEL = Hardware Emulation Layer (Microsoft Direct3D virtual 3D video rasterization device).
HEO = Highly Elliptical Orbit (astronomy).
HEV = High Efficiency Video (coding) H.265/HEVC video compression standard (ITU/ISO/MPEG) (also H.265 + X.265).
HEV1 = High Efficiency Video (coding) 1 H.265/HEVC video compression standard (ITU/ISO/MPEG) (also H.265 + X.265).
HEVC = High Efficiency Video Coding H.265/HEVC video compression standard (ITU/ISO/MPEG) (also H.265 + X.265).
HF = High Frequency (decameter band) radio wave bands 3-30 MHz (ITU).
HFC = HydroFluoroCarbon (man made halogenated organofluorine gaseous compound).
HFC (2) = Hybrid Fiber Coaxial cable system.
HFS = Hierarchical File System (MacOS CD-ROM).
HGL = Hewlett Packard Graphics Language image file.
Hi10P = High 10 Profile 10 bits/sample (10-bit) H.264 video compression standard (ITU).
HID = Human Interface Devices (computer peripherals).
HiDef = High Definition 24 frames/sec progressive video (Sony/Panasonic) (also 24p).
HiFD = High density 200 MB Floppy Disk Drive technology (Sony/Fuji).
Hi-Fi = High Fidelity, also HiFi (superior quality audio/music reproduction technology).
HiFi = High Fidelity, also Hi-Fi (superior quality audio/music reproduction technology).
HIMEM = HIgh/extended MEMory manager (HIMEM.SYS) (DOS + Microsoft MS-DOS).
HIPPI = HIgh Performance Parallel Interface (ANSI X3T9.3 technology).
HIPS = Host based Intrusion Prevention Systems (computer security monitoring).
HIS = Hybrid Image Stabilization (EIS + OIS) technology (digital cinematography/photography/videography).
HLG = Hybrid Log Gamma non linear optical imaging/video transfer function (High Dynamic Range standard) (BBC/NHK).
HLLV = Heavy Lift Launch Vehicle (spacecraft).
HLSL = High Level Shader Language (Microsoft DirectX 9 programming).
HKMG = High K Metal Gate dielectric transistor technology (electronics) (Intel).
HMA = High Memory Area.
HMC = Hybrid Memory Cube Random Access Memory interface (Samsung/Micron).
HMC-DRAM = Hybrid Memory Cube Dynamic Random Access Memory (Samsung/Micron/Altera).
HMD = Head Mounted Display, also HUD (airborne/avionics).
HnS = Hack and Slash (Slay) game, also H&S (multiplayer/single player gaming).
HP = Hewlett Packard.
HPC = High Performance Computing.
HPC (2) = Handheld Personal Computer.
HPCR = High Power Channel cooled Reactor (nuclear fission electrical energy power generator).
HPFS = High Performance File System (OS/2).
HPM = Hydrogen Moderated self regulating Module (nuclear fission electrical energy power generator).
HPR = Heat Pipe cooled Reactor (nuclear fission electrical energy power generator).
HPTC = High Performance Technical Computing.
HRC = Horizontal Redundancy Check (computer science + communications).
HRG = Hybrid Reality Game, also MRG (existent/physical/real + digital/fictitious/represented/virtual environments multiplayer/single player gaming).
H&S = Hack & Slash (Slay) game, also HnS (multiplayer/single player gaming).
HSDRAM = High Speed Synchronous Dynamic Random Access Memory.
HSF = Heat Sink and Fan combo (computer/electronics components cooling system).
HSI = High Speed Interconnect (CERN).
HSO = Herschel Space Observatory (former astronomical observational instrument) (ESA).
HSR = Hidden Surface Removal 3D polygon rendering (NVidia GeForce2/newer + 3dfx Voodoo5/6 3D video).
HST = Hubble Space Telescope (astronomical observational instrument).
HSTS = HTTP Strict Transport Security (SSL + TLS HTTPS protocol standard) (IETF).
HT = Handheld Transceiver (portable 2 way radio).
HTA = HyperText (HTML) Application (Microsoft Windows 95/newer + Internet Explorer 5/newer).
HTGR = High Temperature Gas cooled Reactor (nuclear fission electrical energy power generator).
HTH = Hope This Helps, also Here (Happy) To Help.
HTHL = Horizontal Take off and Horizontal Landing aircraft, spacecraft, vehicle.
HTML = HyperText Markup Language (W3C).
HTML 4.01 = HyperText Markup Language 4.01 standard (W3C).
HTML5 = HyperText Markup Language 5.0 standard (W3C).
HTOVL = Horizontal Take off and Vertical Landing aircraft, spacecraft, vehicle.
HTPC = Home Theater Personal Computer.
HTT = HyperText (HTML) Template (Microsoft Windows 95/newer + Internet Explorer 5/newer).
HTTP = HyperText Transfer Protocol half duplex computer communications standard (http:).
HTTPS = HyperText Transfer Protocol Secure half duplex computer communications standard (https:) (SSL + TLS technologies).
HTVL = Horizontal Take off and Vertical Landing aircraft, spacecraft, vehicle.
HUD = Head(s) Up Display, also HMD (airborne/avionics).
HUMINT = HUMan INTelligence (gather, decrypt, analyze, integrate, exploit management).
HVC = High (efficiency) Video Coding H.265/HEVC video compression standard (ITU/ISO/MPEG) (also H.265 + X.265).
HVC1 = High (efficiency) Video Coding 1 H.265/HEVC video compression standard (ITU/ISO/MPEG) (also H.265 + X.265).
HVD = High Voltage Differential technology (SCSI-2).
HVD (2) = Holographic Versatile Disc technology 1 TB (Optware).
HyperTransport = I/O bus architecture: 64-bit, 133/266 MHz, 6.4 GB/sec (AMD).
Hz = Hertz (frequency measurement unit, a.k.a. clock speed). 1 Hz = 1 clock cycle.
 🔝 
I
I2O = Intelligent Input/Output specification (Intel).
I2P = Invisible Internet Project (anonymous/pseudonymous mix network layer).
i3 = Intel Core i3 CPU family, also Core i3 (x86 + x64 Nehalem/Clarkdale/Arrandale).
i386 = Intel Architecture 32-bit (x86), also IA-32 (compatible 32-bit CPU + instructions set).
I3A = International Imaging Industry Association (DIG + PIMA).
i5 = Intel Core i5 CPU family, also Core i5 (x86 + x64 Nehalem/Lynnfield/Clarkdale/Arrandale).
i7 = Intel Core i7 CPU family, also Core i7 (x86 + x64 Bloomfield/Lynnfield/Clarksfield/Arrandale/Gulftown/Nehalem/Westmere/Sandy).
i9 = Intel Core i9 CPU family, also Core i9 (x86 + x64 Skylake/Coffee Lake/Cascade Lake/Comet Lake).
IA = Intelligent Agent (artificial intelligence).
IA-32 = Intel Architecture 32-bit (x86), also i386 (compatible 32-bit CPU + instructions set).
IA-64 = Intel Architecture 64-bit (Itanium) (Itanium 64-bit CPU + instructions set).
IaaS = Infrastructure as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
IAEA = International Atomic Energy Agency [ONU|OVN|UN(O)].
IAN = International Article Number (scannable digital barcode global unique identifier symbology).
IANA = Internet Assigned Numbers Authority.
IAT = International Atomic Time, also TAI (Temps Atomique International).
IAU = International Astronomical Union, also UAI (Union Astronomique Internationale).
iBGP = Interior (Internal) Border Gateway Protocol, also IBGP (path vector exchange routing + reachability autonomous networking standard).
IBGP = Interior (Internal) Border Gateway Protocol, also iBGP (path vector exchange routing + reachability autonomous networking standard).
IBIS = In Body Image Stabilization technology (digital cinematography/photography/videography).
IBM = International Business Machines.
IBSS = Independent Basic Service Set identifier (wireless LAN standard for devices sharing same network).
IC = Integrated Circuit.
IC (2) = Interface Controller.
ICAM = Integrated Computer Aided Manufacturing (machining, automation).
ICANN = Internet Corporation for Assigned Names and Numbers.
ICAO = International Civil Aviation Organization [ONU|OVN|UN(O)].
ICC = International Criminal Court [ONU|OVN|UN(O)].
ICD = Installable Client Driver (Microsoft 3D video).
ICE = Interactive Connectivity Establishment (peer to peer networking protocol + technology) (IETF).
ICM = Integer Counter Mode, also CM, also SIC (authenticated cryptographic encryption).
ICMP = Internet Control Message Protocol (networking).
ICMPv6 = Internet Control Message Protocol version 6 (networking).
ICMSR = International Convention on Maritime Search and Rescue (SAR Convention) (IMO).
ICO = ICOn graphic/image file type + format (.ICO) (Microsoft Windows).
ICP = Internet Content Provider.
ICS = Internet Connection Sharing.
ICT = Information and Communications Technology (unified, integrated telecommunications, computers, networks, multimedia systems).
ICTP = International Center for Theoretical Physics [ONU|OVN|UN(O)].
ICYMI = In Case You Missed It.
IDCT = Inverse Discrete Cosine Transform (Digital Versatile Disc decoding).
IDE = Integrated Device (Drive) Electronics (Hard Disk Drive interface).
IDE (2) = Integrated Development Environment (software development).
IDK = Internet Development Kit (computer programming).
IDM = Integrated Direct Metering (cinematography/photography/videography camera, device, recorder, lens) (Leica/Pentax).
IDPS = Intrusion Detection and Prevention Systems (computer security monitoring).
i.e. = Id est (Latin) = that is (in other words, is equivalent) (English).
IE = Internet Explorer web browser (IEXPLORE.EXE) (Microsoft). discontinued 
IEA = International Energy Agency, also AIE (Agence Internationale de l'Énergie).
IEAK = Internet Explorer Administration Kit (Microsoft Windows Setup IExpress developer kit) (Microsoft). IEAK
IEC = International Electrotechnical Commission.
IEEE = Institute of Electrical and Electronics Engineers.
IEEE 1394 = Institute of Electrical and Electronics Engineers FireWire peripheral devices high performance serial bus technology.
IENT = Institut Européen des Normes de Télécommunications, also ETSI (European Telecommunications Standards Institute) (EU|UE).
IERS = International Earth Rotation and Reference Systems Service.
IETF = Internet Engineering Task Force.
IFAD = International Fund for Agricultural Development [ONU|OVN|UN(O)].
iFCP = Internet Fibre Channel Protocol (TCP/IP network iFCP gateway to gateway).
IFF = Electronic Arts Image File Format.
IFO = Identified Flying Object (normal, explained, known aerial objects or phenomena).
IFR = Integral Fast cooled Reactor (nuclear fission electrical energy power generator).
IFS = Installable File System TCP/IP handles for Windows Sockets (Winsock) API.
IFSHLP.SYS = Installable File System HeLPer device driver (Microsoft Windows).
IGBT = Insulated Gate Bipolar Transistor (3 terminal power semiconductor device) (electronics).
IGFET = Insulated Gate Field Effect Transistor (electronics).
IGMP = Internet Group Management Protocol (networking).
IGO = InterGovernmental Organization (multinational cooperative association/entity/union).
IGP = Interior (Internal) Gateway protocol, also IRP (networks gateway exchange).
iGPU = Integrated Graphics Processing Unit (built into CPU/motherboard).
IGRP = Interior (Internal) Gateway Routing Protocol (distance vector exchange networking standard) (Cisco).
IH-BD = Intra Hybrid Blu-Ray Disc: 1 BD-ROM (Blu-Ray Disc Read Only Media) layer + 1 BD-RE (Blu-Ray Disc Rewrite) layer [single layer (25 GB)].
IHS = Integrated Heat Spreader technology (Intel X3x chipsets).
IID = Interface unique IDentifier unique 16-byte (128-bit) encrypted integer reference label (IEC/IETF/ISO/TOG software + hardware identification standard).
IIM = Information Interchange Model old digital media file structure and metadata standard (IPTC).
IIRC = If I Recall (Remember) Correctly.
IKE = Internet Key Exchange protocol (IPsec security association authentication) (IETF).
IKEv1 = Internet Key Exchange protocol version 1 (IPsec security association authentication) (IETF).
IKEv2 = Internet Key Exchange protocol version 2 (IPsec security association authentication) (IETF).
ILC = Interchangeable Lens photographic imaging + video Camera (digital cinematography/photography/videography camera, device, recorder).
ILDC = Interchangeable Lens Digital photographic imaging + video Camera (digital cinematography/photography/videography camera, device, recorder).
ILIS = In Lens Image Stabilization technology (digital cinematography/photography/videography optical element, lens).
ILO = International Labor Organization [ONU|OVN|UN(O)].
ILP = Instruction Level Parallelism (parallel computing).
ILS = Instrument Landing System (precision radio navigation system).
IM = Instant Messaging (real time text exchange technology).
IMA = Interactive Music Architecture (Microsoft).
IMAP = Internet Message Access Protocol (e-mail retrieval).
IMAP4 = Internet Message Access Protocol version 4 (e-mail retrieval).
IMF = International Monetary Fund [ONU|OVN|UN(O)].
IMG = GEM Paint image file.
IMHO = In My Humble Opinion.
IMINT = IMagery INTelligence (gather, decrypt, analyze, integrate, exploit management).
i-MLSE = Maximum Likelihood Sequence Estimation evaluation index (Sony/Panasonic Blu-Ray Disc Drive technology).
IMO = International Maritime Organization [ONU|OVN|UN(O)].
IMO (2) = In My Opinion.
IMS = IP Multimedia (Core Network) Subsystem (network delivery standard architecture) (3GPP).
IMT = International Mobile Telecommunications (digital communications) (ITU).
IMT (2) = Interlingual Machine Translation (computational linguistics).
iNAND = Integrated nonvolatile memory mass storage media embedded chip controller (SanDisk).
INF = Setup INFormation File (Microsoft Windows Setup). IEAK
INGO = International Non Governmental Organization (independent advocacy and/or operational non profit entity).
INSARAG = International Search and Rescue Advisory Group [ONU|OVN|UN(O)].
INSIC = INformation Storage Industry Consortium.
Intel 64 = Intel 64-bit (x64) processors, also AMD64, also x64, also x86-64 (64-bit compatible CPU + instructions set).
Internet = Global system of interconnected computer networks using networking protocols to communicate and share data and information among networks (servers) and devices (clients).
InterNIC = Internet Network Information Center.
Intro = Introduction (beginning, commencement, prologue, foreword, initiating, opening, starting bit, credits, element, passage, portion, section, segment).
I/O = Input/Output.
IOM = International Organization for Migration [ONU|OVN|UN(O)].
IOMMU = Input Output Memory Management Unit.
ION = Integrated On demand Network (Sprint FastBreak).
iOS = iPhone cellular/mobile/portable devices proprietary Operating System based on modified open source BSD (Darwin) and NeXTSTEP (Apple).
IoT = Internet of Things (interconnected/networked embedded devices, electronics, products, tools, vehicles).
IotD = Image of the Day.
IoV = Internet of Vehicles (transportation + traffic communication technologies) (IEEE).
IOW = In Other Words.
IP = Internet Protocol (networking).
IP (2) = Intellectual Property.
IPC = Inter Process Communication (environment/network/system data sharing management).
IPDC = Internet Protocol Device Control (VoIP communications specification) (Level 3).
IPF = Invalid Page Fault (Microsoft Windows).
IPM = InterPlanetary Medium (astronomy).
IPMI = Intelligent Platform Management Interface autonomous computer subsystem specifications (Intel).
IPsec = Internet Protocol security (secure encrypted communication standard protocols) (IETF).
IPTC = International Press Telecommunications Council.
IPTV = Internet Protocol TeleVision (Microsoft).
IPv4 = Internet Protocol version 4 [RFC791, 4 sets of 8 bits/character (8-bit) 32-bit binary number: 0-255 range].
IPv6 = Internet Protocol version 6 (RFC1883, 128-bit hexadecimal binary number).
IPX = Internetwork Packet EXchange (Novell Netware).
IPX/SPX = Internetwork Packet Exchange/Sequenced Packet Exchange (Novell Netware).
IQ = Intelligence Quotient (standardized tests score).
IR = InfraRed light, also thermal radiation (invisible electromagnetic waves with wavelengths longer than visible light spectrum).
IRC = Internet Relay Chat.
IrDA = Infrared Data Association.
IRIS = InfraRed Intrusion Sensor (electronic detection).
IRIS (2) = Internet Registry Information Service (client server protocol).
IRL = In Real Life.
IRM = IERS Reference Meridian, also International Reference Meridian, also prime meridian (IERS).
IRNSS = Indian Regional Navigation Satellite System (India).
IRP = Interior (Internal) Routing protocol, also IGP (networks gateway exchange).
IRQ = Interrupt ReQuest line.
IRT = Spacelab InfraRed Telescope (astronomical observational instrument).
IS = Image Stabilization technology (digital cinematography/photography/videography).
IS (2) = Image Stabilization (Canon/Olympus photo/video equipment image/optical stabilization technology).
ISA = International Seabed Authority [ONU|OVN|UN(O)].
ISA (2) = Industry Standard Architecture.
ISA (3) = Instruction Set Architecture (computer processors + programming).
ISAKMP = Internet Security Association and Key Management Protocol (security association and cryptographic keys authentication) (IETF).
ISBN = International Standard Book Number (scannable digital barcode global unique identifier symbology) (ISNI/ISO).
ISC = International Science Council, also CIS (Conseil International des Sciences).
iSCSI = Internet Small Computers System Interface protocol (IETF).
ISDN = Integrated Services Digital Network (simultaneous digital audio, data + video telecommunications standards) (ITU).
ISEF = Instruction Set Extension Fabric (Stretch CPU).
ISF = Imaging Science Foundation (video display technologies).
IS-IS = Intermediate System to Intermediate System, also ISIS (network routing protocol) (IEC/ISO).
ISIS = Intermediate System to Intermediate System, also IS-IS (network routing protocol) (IEC/ISO).
ISM = Industrial, Scientific and Medical reserved short range radio frequency bands (ITU).
ISM (2) = InterStellar Medium (astronomy).
ISMN = International Standard Music Number (scannable digital barcode global unique identifier symbology) (ISO).
ISN = Integrated Silicon Nanophotonics CMOS transistor technology (electronics) (IBM).
ISNI = International Standard Name Identifier (ISO certified global family of unique public works of multimedia identification standards).
iSNS = Internet Storage Name Service protocol (TCP/IP network iFCP gateway).
ISO = International Organization for Standardization, also OIN (Organisation Internationale de Normalisation).
ISO (2) = Infrared Space Observatory (astronomical observational instrument).
ISO (3) = International Organization for Standardization celluloid film/electronic sensor sensitivity to light numerical scale standard (cinematography/photography/videography camera, device, recorder).
ISO 9660 = International Standard LOgical CD-ROM format (High Sierra).
ISP = Internet Service Provider.
ISR = Intelligence, Surveillance and Reconnaissance (military strategy).
ISRC = International Standard Recording Code (global unique audio + video recordings standard identifier symbology) (ISNI/ISO).
ISSN = International Standard Serial Number (scannable digital barcode global unique identifier symbology) (ISNI/ISO).
ISTAR = Intelligence, Surveillance, Target Acquisition and Reconnaissance (military strategy).
ISV = Independent Software Vendor.
ISWC = International Standard Musical Work Code (global unique audio/music media/works standard identifier symbology) (ISNI/ISO).
IT = Information Technology (digital communications, computers, networks + multimedia systems).
ITC = International Trade Center [ONU|OVN|UN(O)].
ITMaaS = Information Technology Management as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
ITS = Intelligent Transportation System (advanced transport + traffic management technologies).
ITTCC = International Telegraph and Telephony Consultative Committee, also CCITT (Commité Consultatif International du Télégraphe et Téléphonie).
i-TTL = Intelligent Through The Lens (flash) metering (cinematography/photography/videography camera, device, recorder, lens) (Nikon).
ITU = International Telecommunications Union, also UIT (Union Internationale des Télécommunications) [ONU|OVN|UN(O)].
IUCN = International Union for Conservation of Nature, also UICN (Union Internationale pour la Conservation de la Nature).
IUPAC = International Union of Pure and Applied Chemistry, also UICPA (Union Internationale de Chimie Pure et Appliquée).
 🔝 
J
JAN = Japanese Article Number (scannable digital barcode unique identifier symbology).
JAR = Java ARchive file type + format (.JAR).
Java = High level general purpose object oriented computer programming language (Sun Microsystems/Oracle).
JavaScript = World Wide Web (WWW), HTML + CSS (object) based/oriented/targeted, also JS high level computer programming language (ECMA).
JAXA = Japan Aerospace eXploration Agency (Japan).
JDK = Java Developers Kit.
JEDEC = Joint Electron Device Engineering Council (USA).
JFC = Java Foundation Classes.
JFIF = JPEG File Interchange Format.
JFS = Journaling File System (Linux OS).
JIF = Joint Photographers Expert Group Image file.
JPEG = Joint Photographers Expert Group Picture format.
JPG = Joint Photographers Expert Group Picture file.
JPL = Jet Propulsion Laboratory (NASA space research laboratories, USA).
JRPG = Japanese Role Playing Game.
JS = World Wide Web (WWW), HTML + CSS (object) based/oriented/targeted, also JavaScript high level computer programming language (ECMA).
JSC = Lyndon B. Johnson Space Center (NASA space center, USA).
JSON = JavaScript Object Notation (JavaScript standard).
JVM = Java Virtual Machine (Microsoft Windows).
JWST = James Webb Space Telescope (astronomical observational instrument) (NASA).
 🔝 
K
°K = Degrees Kelvin, also K (absolute temperature scale measurement unit).
K = Degrees Kelvin, also °K (absolute temperature scale measurement unit).
K56flex = Lucent/Rockwell 56 kb/sec analog modem transfer technology.
KAGRA = Kamioka Gravitational Wave Detector (astronomical observational instrument) (NASA/ESA/JAXA).
KB = KiloByte (1 KB = 1024 Bytes).
KB (2) = Knowledge Base.
KBps = KiloBytes per second (KB/sec).
kbps = kilobits per second (Kb/sec).
KBS = Knowledge Based System (computer programming).
KDC = Key Distribution Center (cryptographic key exchange cryptosystem) (data security).
KINK = Kerberized Internet Negotiation of Keys protocol (IPsec security association authentication) (data security) (IETF).
KJIVV = Katherine Johnson Independent Verification and Validation (IV&V) Facility (NASA safety facility, USA).
KML = Keyhole Markup Language XML notation standard (OGC).
KNI = Intel Pentium III/IV CPU MMX extensions (SSE/SSE2).
KPI = Key Performance Indicator.
KR2 = Knowledge Representation and Reasoning, also KR&R, also KRR (artificial intelligence).
KR&R = Knowledge Representation and Reasoning, also KR2, also KRR (artificial intelligence).
KRR = Knowledge Representation and Reasoning, also KR2, also KR&R (artificial intelligence).
KSC = John F. Kennedy Space Center (NASA spaceport complex, USA).
 🔝 
L
L1 = Level 1 cache (on CPU).
L2 = Level 2 cache (off CPU).
L2TP = Layer 2 Tunneling Protocol (networking).
L3 = Level 3 cache (off CPU SMP).
L4S = Low Latency, Low Loss, Scalable throughput internet decongestion technology (Nokia).
LALE = Low Altitude Long Endurance (aerial aircraft/vehicle).
LALO = Low Altitude Low Opening (airborne parachute jump).
LAN = Local Area Network.
LAPM = Link Access Protocol for Modems.
LaRC = Langley Research Center (NASA space research center, USA).
LARP = Live Action Role Playing game (multiplayer/single player gaming).
LARPG = Live Action Role Playing Game (multiplayer/single player gaming).
LASER = Light Amplification by Stimulated Emission of Radiation (monochromatic electromagnetic wave beam technology).
LBA = Logical Block Addressing (Hard Disk Drive access).
LBG = (Geo)Location Based (Enabled) Game, also GBG, also LEG (GPS tracking + navigation multiplayer/single player gaming).
LBM = DeLuxe Paint BitMap picture file.
LBS = Location Based Service (GPS tracking + navigation).
LCD = Liquid Crystal Display (digital display).
LCoS = Liquid Crystal on Silicon (digital display).
LDAP = Lightweight Directory Access Protocol (networking).
LDID = Link Directory IDentifier unique 16-byte (128-bit) encrypted integer reference label (IEC/IETF/ISO/TOG software + hardware identification standard).
LDIF = Lightweight Data Interchange Format (e-mail exchange technology).
LE = Linear Executable file type + format (DOS/Windows/WfWG 3.xx/95/98/ME 16-bit or 32-bit).
LEAP = Lightweight Extensible Authentication Protocol (computer networking communications cryptographic verification) (IETF).
LED = Light Emitting Diode.
LEG = (Geo)Location (Based) Enabled Game, also GBG, also LBG (GPS tracking + navigation multiplayer/single player gaming).
LEO = Low Earth Orbit (astronomy).
LEP = Light Emitting Polymers technology (CDT monitor).
LF = Low Frequency (kilometer band) radio wave bands 30-300 KHz (ITU).
LF (2) = Line Feed control character sequence (text/ASCII/ANSI/EBCDIC/Unicode).
LFB = Linear Frame Buffer (2D video).
LFE = Low Frequency Effects bass subwoofer channel, part of digital surround sound (3D spatial audio).
LFN = Long File Name (maximum 247.8 = 256 total characters) (Microsoft Windows 32-bit + 64-bit).
LFO = Low Frequency Oscillator.
LFP = Lithium ion FerroPhosphate [Ferrum (Iron) Phosphate], also LiFePO4 rechargeable/replaceable electric energy accumulator/battery/cell.
LFR = Lead Fast cooled Reactor (nuclear fission electrical energy power generator).
LFS = Local First Software, a.k.a. shrinkwrapped, also on-prem (installed, located + run on localized, privately owned computers/network).
LGPL = Lesser General Public License (computer software) (GNU).
LH = LoadHigh internal DOS command (Microsoft MS-DOS).
LHC = Large Hadron Collider (particle accelerator) (CERN).
LIB = Lithium ion rechargeable/replaceable electric energy accumulator/Battery/cell, also Li-ion.
LIDAR = Light (Laser) Imaging Detection And Ranging (distance measurement technology).
LiFePO4 = Lithium ion Ferrum (Iron) Phosphate (FerroPhosphate), also LFP rechargeable/replaceable electric energy accumulator/battery/cell.
Li-Fi = Light Fidelity wireless communication technology, also LiFi (IEEE).
LiFi = Light Fidelity wireless communication technology, also Li-Fi (IEEE).
Lightnet = Publicly accessible indexable (indexed) internet (see also Clearnet, Surface Web, Visible Web).
LIGO = Laser Interferometer Gravitational wave Observatory (astronomical observational instrument) (Caltech/MIT).
Li-ion = Lithium ion rechargeable/replaceable electric energy accumulator/battery/cell, also LIB.
LIM = Lotus, Intel and Microsoft expanded/extended memory specifications (DOS/MS-DOS).
LIMAD = LInear MAgnetic Drive speaker technology (Soundmatters).
Li-NCA = Lithium ion Nickel Cobalt Aluminium (Aluminum) oxide [LiNixCoyAlzO2], also LNCA, also NCA rechargeable/replaceable electric energy accumulator/battery/cell.
Li-NMC = Lithium ion Nickel Manganese (Manganum) [Mn] Cobalt oxide [LiNixMnyCo1-x-yO2], also LNMC, also NCM, also NMC rechargeable/replaceable electric energy accumulator/battery/cell.
Linux = Linus Torvalds' GPL (free, open source) Operating System based on UNIX OS.
LIP = Language Interface Pack (localized MUI add-on/skin for each supported language) (Microsoft).
Li-S = Lithium Sulfur (Sulphur) rechargeable/replaceable electric energy accumulator/battery/cell.
LISA = Laser Interferometer Space Antenna (astronomical observational instrument) (ESA/NASA).
Livecast = Spontaneous/scripted live online/shared digital audio/data/video/written educational/informative course/documentary/event/film/presentation/program.
LLC = Logical Link Control (sub)layer (data communication protocol) (IEEE).
LLDP = Link Layer Discovery Protocol standard internet/networking protocol (IEEE).
LLM = Large Language Model (computational linguistics, computerized predictive ANN).
LLTD = Link Layer Topology Discovery proprietary internet/networking protocol (Microsoft).
LMAO = Laughing My Aṩṩ Off.
LMDS = Local Multipoint Distribution Service.
LMFBR = Liquid Metal Fast Breeder cooled Reactor (nuclear fission electrical energy power generator).
LMFR = Liquid Metal Fast cooled Reactor (nuclear fission electrical energy power generator).
LMGTFY = Let Me Google That For You.
LMR = Liquid Metal cooled Reactor (nuclear fission electrical energy power generator).
LNCA = Lithium ion Nickel Cobalt Aluminium (Aluminum) oxide [LiNixCoyAlzO2], also Li-NCA, also NCA rechargeable/replaceable electric energy accumulator/battery/cell.
LNMC = Lithium ion Nickel Manganese (Manganum) [Mn] Cobalt oxide [LiNixMnyCo1-x-yO2], also Li-NMC, also NCM, also NMC rechargeable/replaceable electric energy accumulator/battery/cell.
Lo-Fi = Low Fidelity, also LoFi, also Low-Fi, also LowFi (inferior quality audio/music reproduction technology).
LoFi = Low Fidelity, also Lo-Fi, also Low-Fi, also LowFi (inferior quality audio/music reproduction technology).
LOL = Laughing Out Loud.
Low-Fi = Low Fidelity, also Lo-Fi, also LoFi, also LowFi (inferior quality audio/music reproduction technology).
LowFi = Low Fidelity, also Lo-Fi, also LoFi, also Low-Fi (inferior quality audio/music reproduction technology).
LP = Long Play vinyl disc/record (33+⅓ rpm, 10/12 in = 25/30 cm, full size, regular capacity analog sound gramophone/phonograph/record player storage medium).
LPC = Low Pin Count interface specification (Intel).
LPD = Local Peer Discovery protocol (networking) (BEP-14).
LPDDR = Low Power Double Data Rate SDRAM (JEDEC).
LPDDR4 = Low Power Double Data Rate 4 (4th generation) SDRAM (JEDEC).
LPDDR4X = Low Power Double Data Rate 4 (4th generation) enhanced SDRAM (JEDEC).
LPDDR5 = Low Power Double Data Rate 5 (5th generation) SDRAM (JEDEC).
LPDDR5X = Low Power Double Data Rate 5 (5th generation) enhanced SDRAM (JEDEC).
LPL = Linear PoLarizer filter (cinematography/photography/videography optical element, lens).
LPT = Line PrinTer (parallel printer port).
LPWA = Low Power Wide Area network, also LPWAN (WAN wireless telecommunication standard) (IEEE).
LPWAN = Low Power Wide Area Network, also LPWA (WAN wireless telecommunication standard) (IEEE).
LRC = Longitudinal Redundancy Check (computer science + communications).
LRRA = Low Range Radio Altimeter.
LR-WPAN = Low Rate Wireless Personal Area Network, also LRWPAN (IEEE).
LRWPAN = Low Rate Wireless Personal Area Network, also LR-WPAN (IEEE).
LS = Line Separator control character sequence (text/ASCII/ANSI/EBCDIC/Unicode).
LSAP = Local Service Access Point (OSI network endpoint labelling system) (IEC/IEEE).
LSC = Local SuperCluster (astronomy).
LSD = Local Service Discovery protocol (networking).
LSI = Large Scale Integration (integrated circuit).
LTO = Linear Tape Open technology (IBM/Hewlett Packard/Seagate).
LSP = Layered Service Provider Windows Sockets (Winsock) API.
LVD = Low Voltage Differential (SCSI-2).
LWIR = Long Wave InfraRed, also WIR band/spectrum (invisible electromagnetic thermal radiation).
LWR = Light Water cooled Reactor (nuclear fission electrical energy power generator).
ly = light year = distance covered by moving object/(sub)particle at light speed [299792 km/sec] in vacuum in 1 Julian calendar year [9460000000000 km], also LY (astronomy).
LY = light year = distance covered by moving object/(sub)particle at light speed [299792 km/sec] in vacuum in 1 Julian calendar year [9460000000000 km], also ly (astronomy).
LZ77 = Lempel + Ziv 1977 lossless data compression algorithm.
LZMA = Lempel, Ziv + Markov lossless data chain compression Algorithm [7-Zip/7Z (.7Z) file type + format].
LZW = Lempel, Ziv + Welch lossless data compression algorithm [GIF (.GIF) graphic file type + format].
LZX = Lempel + Ziv eXtended lossless data compression algorithm [Microsoft CAB (.CAB) file type + format].
 🔝 
M
M.2 = mSATA 2nd generation SSD interface standard, also SATA Express, also SATAe, also NGFF.
M.O. = Modus Operandi, also MO (method or procedure of operation or practice).
M2B = Market to Business, also MtoB.
M2C = Market to Consumer, also MtoC.
M2M = Machine to Machine (communication technologies).
M2M (2) = Market to Market, also MtoM.
MA = Master of Arts (Latin: Magister Artium), also AM (graduate level academic degree).
MAC = Media (Medium) Access Control address (networked hardware unique ID) (IEEE digital transmission layer standard).
MAC (2) = MAC Paint picture file type + format (.MAC).
MacOS = MacIntosh computers/devices proprietary Operating System based on modified open source BSD (Darwin) and NeXTSTEP (Apple).
MAF = Michoud Assembly Facility (NASA space facility, USA).
MALE = Medium Altitude Long Endurance (aerial aircraft/vehicle).
Malware = Malicious Software (viruses, worms, trojans, zombies, bots, spyware, ransomware).
MAMR = Microwave Assisted Magnetic Recording hard disk drive (Western Digital).
MAN = Metropolitan Area Network.
MANET = Mobile (cellular) Ad Hoc Network (real time communication).
MAPI = Messaging Application Programming Interface (Microsoft e-mail).
MARKINT = MARKet INTelligence (gather, decrypt, analyze, integrate, exploit management).
MASER = Microwave Amplification by Stimulated Emission of Radiation (coherent electromagnetic wave beam technology).
MASINT = Measurement And Signature INTelligence (gather, decrypt, analyze, integrate, exploit management).
MB = MegaByte (1 MB = 1024 KiloBytes = 1048576 bytes).
MBaaS = Mobile Backend as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
MBAN = Medical Body Area network.
MBOA = MultiBand OFDM Alliance (UWB technologies).
MBps = MegaBytes per second (MB/sec).
mbps = megabits per second (Mb/sec).
MBR = Master Boot Record (HDD/SSD/NVMe/nonvolatile memory mass storage media partition table layout for drives/partitions/volumes < 2 TB).
MBSS = Mesh Basic Service Set identifier (wireless LAN standard for devices sharing same network).
MC = Main Character (computer, platform, online film, gaming, streaming, television, video).
MCA = Multilink Channel Aggregation technology (Microsoft Windows).
MCD = Mini Client Driver (Microsoft 3D).
MCF = Multimedia Container Format specifications.
MCGA = Multi Color Graphics Adapter old computer display standard (640x480 pixels, 480p) (IBM).
MCI = Media Control Interface.
MCP = Microsoft Certified Professional.
MD5 = Message Digest algorithm 5 128-bit encryption (cryptography).
MDA = Modular Digital Architecture.
MDI = Multiple Document Interface.
mDNS = Multicast Domain Name System UDP protocol (networking: IPs can be routed/resolved to multiple small DNS nodes/servers/subnets).
MDRAM = Multibank Dynamic Random Access Memory (MoSys).
MDSCC = Madrid Deep Space Communications Complex (NASA space communications complex, USA/Spain).
ME = Windows ME (Millennium Edition) (Microsoft).
MEDINT = MEDical INTelligence (gather, decrypt, analyze, integrate, exploit management).
Meme = Imitation, mimicry (mimetism, mimetics), replication (gesture, image, practice, ritual, speech, writing) representation/symbol of experience, phenomenon, theme, viewpoint (communication, online, internet, media).
MEO = Medium Earth Orbit (astronomy).
Metroidvania = Metroid + Castlevania guided non-linearity and utility gated exploration and progression (action adventure computer/platform/video game subgenre) (multiplayer/single player gaming).
MF = Medium Frequency (hectometer band) radio wave bands 300 KHz-3 MHz (ITU).
MFA = Multi Factor Authentication (electronic authentication method).
MFC = Microsoft Foundation Classes (C++ classes library).
MGA = Monochrome Graphics Adapter old computer display standard (IBM).
MGC = Media Gateway Controller.
MGCP = Media Gateway Control Protocol (traditional + hybrid VoIP telecommunications).
MHL = Mobile High Definition Link mobile to audio/data/video interface (Nokia/Samsung/Silicon Image/Sony/Toshiba).
MHTML = MIME Encapsulation of Aggregate HyperText Markup Language Documents (W3C).
MHz = MegaHertz (1 MHz = 1000 KHz = 1000000 Hz).
mic = Microphone, also mike.
Micro-G = MicroGravity force [minuscule/near zero (0)/complete absence of apparent weight or weightlessness].
MIDI = Musical Instrument Digital Interface technology.
MIGFET = Multiple Independent Gate Field Effect Transistor (electronics) (Motorola).
mike = Microphone, also mic.
MILC = Mirrorless Interchangeable Lens photographic imaging + video Camera, also DSLM (digital cinematography/photography/videography camera, device, recorder).
MIMD = Multiple Instruction Multiple Data (parallel computing).
MIME = Multipurpose (Multipart) Internet Mail Extensions.
MIP = Multum In Parvum texture mapping (3D imaging/motion/photo/video).
MIPS = Millions of Instructions per Second (CPU).
MIR = Medium InfraRed, also MWIR band/spectrum (invisible electromagnetic thermal radiation).
MISFET = Metal Insulator Semiconductor Field Effect Transistor (electronics).
MIT = Massachusetts Institute of Technology.
MITM = Man In The Middle malicious cyber attack (computer security + cryptography authentication).
MK3D = MatrosKa 3D stereoscopic video MMC file type + format (.MK3D).
MKA = MatrosKa Audio (MMC file format type (.MKA).
MKS = MatrosKa Subtitle MMC file type + format (.MKS).
MKV = MatrosKa Video MMC file type + format (.MKV).
ML = Machine Learning (computer learning intended to identify, understand, analyze + process data + information for decision making + prediction).
ML (2) = MIT License (computer software) (MIT).
MLA = Modern Languages Association.
MLC = Multi (Two) Level Cell 2 bits/cell NAND nonvolatile memory mass storage media (Phase Change Memory) memory cell/element.
MLLV = Medium Lift Launch Vehicle (spacecraft).
MLP = Multi Layer Perceptrons (artificial intelligence).
MLPPP = MultiLink Point to Point Protocol (communications).
ML-R = MultiLevel Compact Disc Recorder 2 GB (TDK).
ML-RW = MultiLevel Compact Disc ReWritable 2 GB (TDK).
MLSE = Maximum Likelihood Sequence Estimation (mathematical algorithm).
MLU = Mountain Locator Unit (radio/GPS locator device).
MMA = MIDI Manufacturers Association.
MMAI = MultiModal Artificial Intelligence (combination of multiple data types for enhanced quality outcome).
MMC = MultiMediaCard memory card storage standard (SanDisk/Siemens).
MMC (2) = Matroska Multimedia Container (3D, attachment, audio, image, subtitle, video tracks multimedia file container).
MMO = Massively Multiplayer Online game, also MMOG (multiplayer/single player gaming).
MMOFPS = Massively Multiplayer Online First Person Shooter game (multiplayer/single player gaming).
MMOG = Massively Multiplayer Online Game, also MMO (multiplayer/single player gaming).
MMORP = Massively Multiplayer Online Role Playing game, also MMORPG (multiplayer/single player gaming).
MMORPG = Massively Multiplayer Online Role Playing Game, also MMORP (multiplayer/single player gaming).
MMORTS = Massively Multiplayer Online Real Time Strategy game (multiplayer/single player gaming).
MMR = Mean Motion Resonance (astronomy).
MMVF = MultiMedia Video Format (NEC DVD).
MMX = MultiMedia eXtensions (Intel Pentium/Pentium Pro CPU instructions).
MMX2 = Intel Pentium II/III/IV CPU MultiMedia eXtensions 2nd generation (see KNI).
MNN = Modular Neural Network (artificial intelligence).
MO = Modus Operandi, also M.O. (method or procedure of operation or practice).
MO (2) = Magneto-Optical (disk) drive.
MOBA = Multiplayer Online Battle Arena game (multiplayer/single player gaming).
modem = MOdulator/DEModulator (data to analog/digital converter/transmitter/receiver).
MODS = Multiplexed Optical Data Storage 1 TB CD/DVD technology (Imperial College London).
MOID = Minimum Orbit Intersection Distance (astronomy).
MOO = Multi User Dimension/Domain/Dungeon Object Oriented (gaming) system (gaming/virtual reality).
MOOC = Massive Online Open Course game (multiplayer/single player gaming).
MORP = Multiplayer Online Role Playing game, also MORPG (multiplayer/single player gaming).
MORPG = Multiplayer Online Role Playing Game, also MORP (multiplayer/single player gaming).
MOS = Metal Oxide Semiconductor.
MOS (2) = Massive Online Serious game, also MOSG (multiplayer/single player gaming).
MOS-FET = Metal Oxide Semiconductor Field Effect Transistor, also MOSFET (electronics).
MOSFET = Metal Oxide Semiconductor Field Effect Transistor, also MOS-FET (electronics).
MOSG = Massive Online Serious Game, also MOS (multiplayer/single player gaming).
MotD = Message of the Day.
MOV = QuickTime MOVie file (Apple).
MP3 = MPEG-1 Audio Layer 3 compression container file format technology.
MP4 = MPEG-4 Part 14 (digital multimedia container file format).
MPC = Multimedia Personal Computer.
MPEG = Motion Picture Expert Group.
mpeg (2) = Motion Picture Expert Group compressed image file format, also MPG (MPEG).
MPEG-1 = Motion Picture Expert Group v1 audio/data/video compression technology (MPEG).
MPEG-2 = Motion Picture Expert Group v2 audio/data/video compression technology (MPEG).
MPEG-4 = Motion Picture Expert Group v4 audio/data/video compression technology (MPEG).
MPEG-5 = Motion Picture Expert Group v5 audio/data/video compression technology (MPEG).
MPEG-7 = Motion Picture Expert Group v7 audio/data/video compression technology (MPEG).
MPEG-H = Motion Picture Expert Group H audio/image/video coding, compression + transport technologies + standards (MPEG).
MPG = Motion Picture Expert Group compressed image file format, also mpeg (MPEG).
MPGA = Micro Pin Grid Array (370 pin Intel CPU).
MPL = Mozilla Public License (computer software) (Mozilla).
MPLS = MultiProtocol Label Switching (digital communications networks routing).
MPM = Manufacturing Process Management (machining, automation).
MPP = Massively Parallel (Multi Purpose) Processor (parallel computing).
MPPA = Massively Parallel (Multi Purpose) Processor Array (parallel computing).
MPPT = Maximum Power Point Tracking, also PPT (variable electrical energy power source efficiency maximization).
MPR = Man Portable Radar.
µPS = Muometric Positioning System, also muPS (cosmic particle based wireless navigation system) (Japan).
MPX = MultiPleX (muxing) (simultaneous bidirectional broadcast/radio telecommunications) (ITU).
MQTT = Message Queue (Queuing) Telemetry Transport service (IEC/ISO).
MQTT-SN = Message Queue (Queuing) Telemetry Transport service for Sensor Networks.
MR = Magneto-Resistive head technology (Hard Disk Drive).
MR (2) = Mixed Reality (merging of interactive real world with computer generated environment/experience).
MRAM = Magneto-Resistive Random Access Memory (IBM/Infineon).
MRG = Mixed Reality Game, also HRG (existent/physical/real + digital/fictitious/represented/virtual environments multiplayer/single player gaming).
mRNA = Messenger RiboNucleic Acid (single stranded RNA corresponding to the genetic sequence of a gene used for inducing transcriptional gene activation through RNAa).
MRX = Magneto-Resistive EXtended head technology (IBM Hard Disk Drive).
µs = Microsecond (1/1000000 = 1 millionth of a second).
MS = Master of Science (Latin: Scientiae Magistrum), also SM (graduate level academic degree).
MS (2) = MicroSoft.
MS IE = MicroSoft Internet Explorer web browser (IEXPLORE.EXE). discontinued 
MS-DOS = MicroSoft Disk Operating System (text based command line console interface).
MSaaS = Managed Software as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
mSATA = Mobile Serial Advanced Technology Attachment Disk Drive.
MSBE = Minimum SAR (Specific Absorption Rate) (intensity) with Biological Effect.
MSCDEX = MicroSoft Compact Disk EXtensions device driver (MSCDEX.EXE).
MSD = MicroSoft Diagnostics (MSD.EXE).
MSFC = Marshall Space Flight Center (NASA space center, USA).
MSG = MeSsaGe, also MeSsaGing.
MSI = Medium Scale Integration (integrated circuit).
MSKB = Former MicroSoft Knowledge Base (renamed Microsoft Support).
MSM = MainStream Media.
MSO = Multiple Service Operator [voice (telephone), data (internet, network), video (television, conferencing) providers].
MSP = MicroSoft Paint picture file type + format (.MSP).
MSR = Molten Salt cooled Reactor (nuclear fission electrical energy power generator).
MSRP = Manufacturer Suggested Retail Price.
MSS = Maximum Segment Size (internet protocol).
MSSR = Monopulse Secondary Surveillance Radar.
MSTO = Multi Stage To Orbit spacecraft, vehicle.
MT = Machine Translation (computational linguistics).
MTBF = Mean Time Between Failures measured in hours (merchandising, products).
MTF = Modulation Transfer Function of periodic sine wave pattern of light projected through optical system.
MTFBWY = May The Force Be With You. 😉
MtoB = Market to Business, also M2B.
MtoC = Market to Consumer, also M2C.
MTOM = Message Transmission Optimization Mechanism (W3C).
MtoM (2) = Market to Market, also M2M.
MTP = Message Transfer Part (PST communication network) (ITU).
MTT = MultiTransaction Timer (PCI).
MTTF = Mean Time To Failure measured in hours (merchandising, products).
MTTR = Mean Time To Repair measured in hours (merchandising, products).
MTU = Maximum Transmission Unit (internet protocol).
MUD = Multi User Dimension (game), also Multi User Domain (game), also Multi User Dungeon game (gaming/virtual reality).
MUI = Multilingual User Interface (localized APIs for all supported languages) (Microsoft).
muPS = Muometric Positioning System, also µPS (cosmic particle based wireless navigation system) (Japan).
MUVE = Multi User Virtual Environment (space) (game) (gaming/virtual reality).
MUX = MUltipleXer (MUltipleXor) (MUXer) (analog/digital multiplex input to simplex output converter/selector).
MVA = Multidomain Vertical Alignment technology (LCD screen).
MVG = Multiplayer Video Game.
MVP = Most Valuable Professional (Microsoft).
MWIR = Medium Wave InfraRed, also MIR band/spectrum (invisible electromagnetic thermal radiation).
MYOB = Mind Your Own Business.
MZ = Mark Zbikowski DOS executable file type + format (.MZ) (DOS 16-bit).
 🔝 
N
N = Atomic Nitrogen (Z=7 protons, trivalent nonmetal chemical element, N2 = stable inorganic molecular gas at standard conditions).
N2 = Molecular Nitrogen composed of 2 Nitrogen atoms (stable inorganic gas at standard conditions, Z=7 protons, N = trivalent nonmetal chemical element).
*nix = Linux (UNIX like) family of GPL (free, open source) Operating Systems, also nix.
NA = Numerical Aperture (optics physics).
NAC = Network Access Control (computer networking security technology).
NaaS = Network as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
NAC = Network Admissions Control technology (Cisco).
Na-ion = Natrium (Sodium) ion rechargeable/replaceable electric energy accumulator/battery/cell, also NIB, also SIB.
NAK = Negative AcKnowlegement (modem response).
NAND = Negated AND +/- NO AND digital logic gate (nonvolatile memory) (electronics).
NAP = Network Access Protection technology (Microsoft).
NAS = Network Attached Storage (file level networked data storage technology).
NaS (2) = Natrium (Sodium) Sulfur (Sulphur) molten salt rechargeable/replaceable electric energy accumulator/battery/cell.
NASA = National Aeronautics and Space Administration (USA).
NAT = Network Address Translation (networking technology).
NATF = Neil Armstrong Test Facility (NASA space simulation facility, USA).
NBA = Network Behavior Analysis (network traffic monitoring).
NBT = NetBIOS over TCP/IP, also NetBT (network protocol).
NC = Noise Cancellation (Control), also ANC, also ANR (analog/digital audio artifacts/static filtering/removal).
NC (2) = Network Computer.
NCA = Lithium ion Nickel Cobalt Aluminium (Aluminum) oxide [LiNixCoyAlzO2], also Li-NCA, also LNCA rechargeable/replaceable electric energy accumulator/battery/cell.
NCEI = National Centers for Environmental Information (NOAA, USA).
NCEP = National Centers for Environmental Prediction (NOAA, USA).
NCM = Lithium ion Nickel Manganese (Manganum) [Mn] Cobalt oxide [LiNixMnyCo1-x-yO2], also Li-NMC, also LNMC, also NMC rechargeable/replaceable electric energy accumulator/battery/cell.
NCQ = Native Command Queuing protocol (Serial ATA Hard Disk Drive).
NCS = Network based Call Signaling (VoIP MGCP profile).
ND = Neutral Density filter (cinematography/photography/videography camera, device, recorder, lens).
NDA = Non Disclosure Agreement, also CA, also CDA, also PIA, also SA (legally binding restrictive contract).
NDP = Neighbor Discovery Protocol (IPv6 networking).
NDI = Network Device Interface (networking).
NDIS = Network Driver Interface Specification layer (networking) (Microsoft/3Com).
NE = New Executable file type + format (DOS/Windows/WfWG 3.xx 16-bit).
NEA = Near Earth Asteroid (astronomy).
NearLink = Short range wireless technology standard, also SparkLink (Huawei).
NEF = Nikon Electronic RAW image Format (Nikon).
NEL = NExt Line control character sequence (text/ASCII/ANSI/EBCDIC/Unicode).
NEN = (NASA space communications network, USA).
NEO = Near Earth Object (astronomy).
NESC = NASA Engineering and Safety Center (NASA safety center, USA).
NESDIS = National Environmental Satellite, Data and Information Service (NASA/NOAA, USA).
NetBEUI = NetBIOS Extended (Enhanced) User Interface (networking).
NetBIOS = Network Basic Input Output System (LAN APIs).
NetBT = NetBIOS over TCP/IP, also NBT (network protocol).
Netcast = Spontaneous/scripted live/recorded online/shared digital audio/data/video/written educational/informative course/documentary/event/film/presentation/program.
NetRoom = Helix Software 386 Expanded Memory Manager (RM386.EXE).
NFC = Near Field Communication (short range wireless ISM radio band data exchange standard) (NFC Forum).
NFP = Not For Profit.
NFS = Network File System (Sun Microsystems).
NFT = Non-Fungible Token (blockchained unique indivisible digital identifier).
NGFF = Next Gen Form Factor, also M.2 (mSATA 2nd generation) SSD interface standard, also SATA Express, also SATAe.
NGI = Next Generation Internet foundation (EU|UE).
NGO = Non Governmental Organization (independent advocacy and/or operational non profit entity).
NIB = Natrium (Sodium) Ion rechargeable/replaceable electric energy accumulator/Battery/cell, also Na-ion, also SIB.
NIC = Network Interface Controller (Card).
NIC (2) = Networked Information Center.
NIPS = Network based Intrusion Prevention Systems (network security monitoring).
NIR = Near InfraRed band/spectrum (near invisible electromagnetic thermal radiation).
NISN = NASA Integrated Services Network (NASA global space system + facilities, USA).
NIST = National Institute of Standards and Technology (USA).
nix = Linux (UNIX like) family of GPL (free, open source) Operating Systems, also *nix.
NLG = Natural Language Generation (computational linguistics).
NLI = Natural Language Interpretation (computational linguistics).
NLP = Natural Language Processing (computational linguistics).
NLS = National Language Support (locale/localized functions for all supported languages) (Microsoft).
NLU = Natural Language Understanding (computational linguistics).
NMC = Lithium ion Nickel Manganese (Manganum) [Mn] Cobalt oxide [LiNixMnyCo1-x-yO2], also Li-NMC, also LNMC, also NCM rechargeable/replaceable electric energy accumulator/battery/cell.
nMOS = N type Metal Oxide Semiconductor logic.
NMT = Neural Machine Translation (computational linguistics).
NN = Artificial/biological Neural Network/net (artificial intelligence).
NNTP = Network News Transfer Protocol (USENET messaging).
NOAA = National Oceanic and Atmospheric Administration (USA).
NOR = NOT +/- NOT OR digital logic gate (nonvolatile memory) (electronics).
NOS = Network Operating System.
NOT = Negated NOT digital logic gate (nonvolatile memory) (electronics).
NPC = Non Playable (Player) Character (computer, platform, online film, gaming, streaming, television, video).
NPOV = Neutral Point of View (accurate, complete, factual, honest, impartial, nonfictional, objective, open minded perspective/viewpoint).
NPU = Neural Processing Unit (A.I./machine learning computer/device hardware accelerator).
NRAM = Non Volatile Random Access Memory, also NVRAM.
NRAO = National Radio Astronomy Observatory (USA).
NRHO = Near Rectilinear Halo Orbit (astronomy).
ns = Nanosecond (1/1000000000 = 1 billionth of a second).
NSC = Nuclear Star Cluster (astronomy).
NSC (2) = NASA Safety Center (NASA safety field center, USA).
NSFW = Not Safe For Work.
NSN = Near Space Network (NASA space facilities network, USA).
NSR = NVidia Shading Rasterizer (GeForce2/3/4/FX 3D chipsets).
NSSC = NASA Shared Services Center (NASA support center, USA).
NT = Windows NT (New Technology) 3.xx family + 4.0 OSes (Microsoft).
NT10 = Windows NT (New Technology) 10.0 family OSes: 10, 2016, 2019, 11, 2022 (Microsoft).
NT10x = Windows NT (New Technology) 10.x family OSes: 10, 2016, 2019, 11, 2022 (Microsoft).
NT3 = Windows NT (New Technology) 3.xx family OSes (Microsoft).
NT4 = Windows NT (New Technology) 4.0 OS (Microsoft).
NT6 = Windows NT (New Technology) 6.0 family OSes: Vista, 2008, 7, 2008 R2, 8, 2012, 8.1 + 2012 R2 (Microsoft).
NT6x = Windows NT (New Technology) 6.x family OSes: Vista, 2008, 7, 2008 R2, 8, 2012, 8.1 + 2012 R2 (Microsoft).
NTFS = New Technology File System 32-bit (Windows NT/newer) (Microsoft).
NTP = Network Time Protocol (atomic clock server technology).
NTSC = National Television Systems Committee (USA TV standard: 525 lines).
NTW = Not To Worry.
NTx = Windows NT (New Technology) version x families of Operating Systems (OSes): NT + newer (Microsoft).
NUC = Non Uniformity Correction, also FFC (infrared/IR/thermal video camera/recorder artifacts/noise/static filtering/removal).
NUC (2) = Next Unit of Computing (Intel small form factor PC).
NUL = 0(0)/0h/0x, also NULL (absent/dummy/fake/fill//nil/nonexistent/reserved bit, character, component/device/hardware ID, identifier, port).
null = 0 (nul) text/ASCII/ANSI/EBCDIC/Unicode/UTF-8 character/encoding/notation/representation/symbol.
NULL = 0(0)/0h/0x, also NUL (absent/dummy/fake/fill//nil/nonexistent/reserved bit, character, component/device/hardware ID, identifier, port).
NUMA = Non Uniform Memory Access multiprocessing technology (computing).
NVMe = Non Volatile Memory express (mSATA/SATAe SSDs).
NVMHCI = Non Volatile Memory Host Controller Interface Specification (mSATA/SATAe).
NvN = Nation versus Nation (multiplayer/single player gaming).
NVRAM = Non Volatile Random Access Memory, also NRAM.
NXOR = Exclusive NOR (NOT +/- NOT OR) digital logic gate, also ENOR, also EXNOR, also XAND, also XNOR (nonvolatile memory) (electronics).
 🔝 
O
O = Atomic Oxygen (Z=8 protons, bivalent nonmetal chemical element, O2 = stable inorganic molecular gas at standard conditions).
O2 = Molecular Oxygen composed of 2 Oxygen atoms (stable inorganic gas at standard conditions, Z=8 protons, O = bivalent nonmetal chemical element).
OAD = Original Animated/Anime/Animation Disc/DVD (DVD, Blu-Ray/BD, UHD/4K).
OAL = Open Audio Library, also OpenAL (computer programming 3D positional audio + playback API) (Creative Labs).
OAM = Orbital Angular Momentum (light beam + communications).
OASIS = Organization for Advancement of Structured Information Standards.
OAV = Original Animated/Anime/Animation Video, also OVA.
OAW = Optically Assisted Winchester hard disk technology (Seagate).
OCDE = Organisation de Coopération et de Développement Économiques, also OECD (Organization for Economic Cooperation and Development).
OCR = Optical Character Recognition.
OCR (2) = Organic Cooled Reactor (nuclear fission electrical energy power generator).
ODA = Original Digital Animated/Anime/Animation.
ODBC = Open DataBase Connectivity.
ODDS = On Demand Delivery Solution.
ODI = Open Data-Link Interface (networking) (Apple/Novell).
ODNS = Open DNS network security protocol.
ODoH = Oblivious DNS over HTTPS network security protocol.
ODSS = On Demand Self Service.
OECD = Organization for Economic Cooperation and Development, also OCDE (Organisation de Coopération et de Développement Économiques).
OEM = Original Equipment Manufacturer.
OFDM = Orthogonal Frequency Division Multiplexing digital telecommunications technologies (MBOA).
OGC = Open Geospatial Consortium.
OGL = Open Graphical Language, also OpenGL (computer programming 3D graphics + video architecture layout + API) (Silicon Graphics).
OIN = Organisation Internationale de Normalisation, also ISO (International Organization for Standardization).
OIS = Optical Image Stabilization (FujiFilm/Panasonic photo/video equipment image/optical stabilization technology).
O.K. = Oll Korrect, also OK, also okay [All Correct = humorously misspelled on purpose (American English); okeh = it is so (Choctaw); kay, waw-kay, o ke ≅ yes indeed (Mande, Bantu, Wolof); och aye = oh yes (Scottish); óla kalá = all good (Greek)].
OK = Oll Korrect, also O.K., also okay [All Correct = humorously misspelled on purpose (American English); okeh = it is so (Choctaw); kay, waw-kay, o ke ≅ yes indeed (Mande, Bantu, Wolof); och aye = oh yes (Scottish); óla kalá = all good (Greek)].
okay = Oll Korrect, also OK, also O.K. [All Correct = humorously misspelled on purpose (American English); okeh = it is so (Choctaw); kay, waw-kay, o ke ≅ yes indeed (Mande, Bantu, Wolof); och aye = oh yes (Scottish); óla kalá = all good (Greek)].
OLE = Object Linking and Embedding (Microsoft Windows).
OLED = Polymer Organic Light Emitting Diode display (Toshiba).
OLGA = Organic Land Grid Array (Intel Pentium III CPU).
OLPC = One Laptop Per Child foundation.
OLPF = Optical Low Pass Filter, also Anti Aliasing Filter (digital cinematography/photography/videography optical element, lens).
OMS = Organisation Mondiale de la Santé, also WGO, also WHO [ONU|OVN|UN(O) agency responsible for international public health].
OMV = Original Music Video.
ONA = Original (inter)Net (web) Animated/Anime/Animation.
ONAW = Original (inter)Net Animated/Anime/Animation on the Web.
ONFI = Open NAND Flash Interface Working Group (NAND nonvolatile memory mass storage media standards).
On-prem = On premises software, a.k.a. shrinkwrapped, also LFS (installed, located + run on localized, privately owned computers/network).
ONU = Organization des Nations Unies, also OVN, also UN(O) (intergovernmental organization for international cooperation, dignity, equality, equity, health, peace, rights, security with over 190 members countries/nations/sovereignties/states/territories).
OOB = Out Of Band.
OOBE = Out Of Box Experience (Microsoft Windows).
OOBF = Out Of Box Failure (computer/device hardware/software error message).
OOF = Out Of Focus (arts, sciences, technology).
OOK = On Off Keying (digital communications).
OOO = Out Of Office.
OOTB = Out Of The Box (computer software built in feature/functionality).
OOV = Out Of Vocabulary (computational linguistics).
OP = OPening (beginning, commencement, prologue, foreword, initiating, starting bit, credits, element, passage, portion, section, segment).
OP (2) = Original Poster, also Original Post, also OverPowered (gaming).
OPCW = Organization for the Prohibition of Chemical Weapons [ONU|OVN|UN(O)].
OP/ED = OPening + EnDing, also OP-ED, also OP ED.
OP-ED = OPening + EnDing, also OP/ED, also OP ED.
OP ED = OPening + EnDing, also OP/ED, also OP-ED.
OpenAL = Open Audio Library, also OAL (computer programming 3D positional audio + playback API) (Creative Labs).
OpenGL = Open Graphical Language, also OGL (computer programming 3D graphics + video architecture layout + API) (Silicon Graphics).
OpenGVS = Open Gemini Visual System, also GVS (computer programming 3D graphics + video architecture layout + API) (3D Perception).
OpenSL = Open Sound Library, also OSL (computer programming 2D + 3D positional audio + playback API) (Khronos).
OpenSL ES = Open Sound Library for Embedded Systems, also OSL ES (computer programming 2D + 3D positional audio + playback API) (Khronos).
OPR = Open Pool cooled Reactor (nuclear fission electrical energy power generator).
OPS = Open Profiling Standard.
OptiNAND = Nonvolatile memory mass storage media enhanced hard disk drive architecture (Western Digital).
OR = Disjunctive OR digital logic gate (nonvolatile memory) (electronics).
ORPG = Online Role Playing Game (multiplayer/single player gaming).
OS = Operating System (computer/device boot + core software interface).
OS (2) = Open Source.
OS (3) = Optical Stabilizer (Sigma photo/video equipment image/optical stabilization technology).
OS/2 = Operating System 2 (IBM).
OSCE = Organization for Security and Cooperation in Europe (Organisation pour la Sécurité et la Coopération en Europe).
OSD = Open Software Distribution.
OSD = Open Source Definition.
OSD (2) = Open Software Distribution.
OSD (3) = On Screen Display.
OSDN = Open Source Technology Group (formerly Open Source Developers Network).
OSI = Open Systems Interconnection networks reference design (communications system layering) (IEC/ISO).
OSI (2) = Open Source Initiative.
OSINT = Open Source INTelligence (gather, decrypt, analyze, integrate, exploit management).
OSL = Open Sound Library, also OpenSL (computer programming 2D + 3D positional audio + playback API) (Khronos).
OSL ES = Open Sound Library for Embedded Systems, also OpenSL ES (computer programming 2D + 3D positional audio + playback API) (Khronos).
OSPF = Open Shortest Path First (IP networks routing protocol).
OSR1 = Windows 95a OEM Service Release 1 (Microsoft).
OSR2 = Windows 95B/95C OEM Service Release 2.0/2.1/2.5 (Microsoft).
OSR 2.0 = Windows 95B OEM Service Release 2.0 (Microsoft).
OSR 2.1 = Windows 95B OEM Service Release 2.1 (Microsoft).
OSR 2.5 = Windows 95C OEM Service Release 2.5 (Microsoft).
OSR 2.x = Windows 95B/95C OEM Service Release 2.x (Microsoft).
OSS = Open Source Software.
OSS (2) = Optical Steady Shot (Sony photo/video equipment image/optical stabilization technology).
OSS (3) = Open Sound System (computer programming audio API) (UNIX/Linux).
OST = Original (music/voice audio) Sound Track (SoundTrack) (from online, streaming, television, theatrical, video documentary, film, program, series).
OSTA = Optical Storage Technology Association.
OSTG = Open Source Technology Group (formerly Open Source Developers Network).
OTF = OpenType Font cross platform file type + format (.OTF) (Adobe/Microsoft).
OTF (2) = Optical Transfer Function of periodic sine wave pattern of light projected through optical system.
OTF (3) = Off The Film metering (cinematography/photography/videography camera, device, recorder, lens) (Olympus).
OTG = On The Go USB interface (Apple/Hewlett Packard/Intel/Microsoft/NEC).
OTS = Over The Shoulder (game) (multiplayer/single player gaming, perspective/viewpoint).
OTT = Over The Top (direct to online/internet multimedia distribution/streaming platform/service).
Outro = Outroduction (afterword, closing, ending, epilogue, finishing, stopping, terminating bit, credits, element, passage, portion, section, segment).
OVA = Original Video Animated/Anime/Animation, also OAV.
OVF = Optical View Finder previews image indirectly through device lens, different than captured frame (cinematography/photography/videography).
OVN = Organization der Vereinten Nationen, also ONU, also UN(O) (intergovernmental organization for international cooperation, dignity, equality, equity, health, peace, rights, security with over 190 members countries/nations/sovereignties/states/territories).
OWASP = Open Worldwide Application Security Project (free + open cyber security resources).
 🔝 
P
P II = Intel Pentium II CPU (80686 Klamath/Deschutes Xeon + Celeron).
P III = Intel Pentium III CPU (80686 Katmai/Coppermine/Tualatin Xeon + Celeron).
P IV = Intel Pentium IV CPU (80686 Willamette/Northwood Xeon + Celeron).
P2P = Peer to Peer data sharing computing/networking architecture.
P2P (2) = Point to Point connection communications/networking protocol.
P3P = Platform for Privacy Preferences (W3C).
P5 = Intel Pentium/Pro CPU (80586).
P6 = Intel Pentium II/III/IV CPU (80686).
PaaS = Platform as a Service on demand via local thin client (bare bones operating system) + remote central host (internet cloud server).
PAE = Physical Address Extensions (Intel 8XX chipsets with > 4 GB RAM).
PAL = Phase Alternate Line (European TV standard: 625 lines).
PAM = Pulse Amplitude Modulation digital data analog signal transmission.
PAN = Personal Area Network.
Panose = Typeface font matching system (Hewlett Packard).
PAP = Password Authentication Protocol (computer communications cryptographic verification).
PAR = Precision Approach Radar.
PASM = Program(med) (P) (ISO sensitivity), Aperture (A) (focal opening), Shutter (S) (exposure time) + Manual (M) (all parameters by hand) photographing priority modes, also PSAM (photographic camera/device).
PAT = Port Address Translation (network/internet IP address).
PAT (2) = Performance Acceleration Technology (Intel 865/875 Pentium IV chipsets).
PATA = Parallel Advanced Technology Attachment Hard Disk Drive.
PBC = Pipeline Burst Cache.
PBM = Portable BitMap UNIX picture file.
PBR = Pebble Bed cooled Reactor (nuclear fission electrical energy power generator).
PBSRAM = Pipeline Burst Static Random Access Memory (Intel CPU L2 cache).
PBX = Private Branch Exchange (telephony switching systems).
PC = Personal Computer (a.k.a. IBM PC/AT clone).
PC (2) = Playable Character (multiplayer/single player gaming).
PC99 = PC 1999 System Design Guide (Intel/Microsoft).
PCAP = Packet Capture (monitoring) network traffic file type + format (computer/data analysis/security).
pcap (2) = Packet capture (monitoring) network traffic software API.
PCAV = Progressive Constant Angular Velocity (Compact Disc).
PCB = Printed Circuit Board (electronics).
PCD = Kodak Photo CD image file.
PCD (2) = Protein Coated Disc optical storage technology (Harvard Medical School/NEC).
PCI = Peripheral Component Interconnect bus architecture: 32-bit 33/66 MHz (Intel).
PCI 2.1 = Peripheral Component Interconnect 2.1 technology: 32-bit 33/66 MHz (Intel).
PCI 2.2 = Peripheral Component Interconnect 2.2 technology: 32-bit 33/66/133 MHz (Intel).
PCI 3.0 = Peripheral Component Interconnect 3.0 technology (3GIO or PCI Express): 64-bit 133/266 MHz 6.6 GB/sec (Intel/IBM/Compaq/Microsoft/Dell).
PCI Express = Peripheral Component Interconnect Express technology (3GIO or PCI 3.0): 64-bit 133/266 MHz 6.6 GB/sec (Intel/IBM/Compaq/Microsoft/Dell), also PCIe, also PCI-X.
PCI-SIG = Peripheral Component Interconnect Special Interest Group.
PCI-X = Peripheral Component Interconnect eXtended bus architecture: 64-bit 133 MHz 6 GB/sec (Intel/Compaq/Hewlett Packard/IBM).
PCI-X 2.0 = Peripheral Component Interconnect eXtended bus architecture: 64-bit 266/533 MHz 12/24 GB/sec (Intel/Compaq/Hewlett Packard/IBM).
PCI-X 3.0 = Peripheral Component Interconnect eXtended bus architecture: 64-bit 533/1066 MHz 24/48 GB/sec (Intel/Compaq/Hewlett Packard/IBM).
PCIe = Peripheral Component Interconnect Express technology (3GIO or PCI 3.0): 64-bit 133/266 MHz 6.6 GB/sec (Intel/IBM/Compaq/Microsoft/Dell), also PCI Express, also PCI-X.
PCL = Printer Control Language.
PCM = Pulse Code Modulation.
PCMCIA = Personal Computer Memory Card International Association.
PCS = Personal Communications Service.
PCX = Zsoft PC Paintbrush Picture file.
PCX (2) = 3GIO or PCI Express or PCIe (see above).
PDA = PhotoDiode Array (image sensor technology).
PDA (2) = Personal Digital Assistant.
PDAF = Phase Detection Auto(matic) Focus (cinematography/photography/videography camera, device, recorder, lens).
PDF = Portable Document Format file type + format (.PDF) (Adobe).
PDH = Plesiochronous Digital Hierarchy protocol (digital communications).
PDM = Pulse Density Modulation (communications).
PDM (2) = Pulse Duration Modulation (communications).
PDP = Parallel Data Processing (Intel I-740).
PDS = Public Domain Software.
PE = Portable Executable file type + format (Microsoft Windows 32-bit + 64-bit and ReactOS).
PEAP = Protected Extensible Authentication Protocol (computer networking communications cryptographic verification) (IETF).
PEARL = Process and Experiment Automation Realtime Language high level multitasking real time computer programming language (DIN).
pel = Picture ELement: RGB 3 dot pattern (color CRT/LCD/LED/TV), also pixel, also px.
Pentium = Intel Pentium CPU (80586).
Pentium Pro = Intel Pentium Pro CPU (80586).
Pentium II = Intel Pentium II CPU (80686 Klamath/Deschutes Xeon + Celeron).
Pentium III = Intel Pentium III CPU (80686 Katmai/Coppermine/Tualatin Xeon + Celeron).
Pentium IV = Intel Pentium IV CPU (80686 Willamette/Northwood Xeon + Celeron).
PER = Packet Error Ratio (digital transmission, percentage).
PERL = Practical Extraction and Report Language (computer programming).
PESA = Passive Electronically Scanned Array (phased array antenna).
PFPT = Pure Flat Picture Tube.
PGM = Portable GrayMap UNIX picture file type + format (.PGM).
PGN = Portable Game Notation chess game text/ASCII computer processible file type + format (.PGN).
PGP = Pretty Good Privacy (cryptographic encryption method).
PGS = Presentation Graphic Stream (image based) CD/BD/DVD/UHD video subtitles file type + format (.SUP).
Ph.D. = Doctor of Philosophy (Latin: Philosophiae Doctor), also PhD, also DPhil (highest level academic degree).
PhD = Doctor of Philosophy (Latin: Philosophiae Doctor), also Ph.D., also DPhil (highest level academic degree).
PHD (2) = Pro High Definition, also Pro HD, also 6K (digital TV standard: 3160 lines).
Phishing = Lured in for "fishing", psychological manipulation (dishonest, false, fraudulent, illegal, abusive, deceptive, misleading, disguised, malicious digital, internet/online blackmail, malware, ransomware, spyware attacks).
PHO = Potentially Hazardous Object (astronomy).
PHOLED = PHosphorescent Organic Light Emitting Diode.
PHP = Hypertext PreProcessor (formerly Personal Home Page) scripting HTML language (dynamic, server based) (free, open source).
PHWR = Pressurized Heavy Water cooled Reactor (nuclear fission electrical energy power generator).
PHY = PHYsical Layer electronic circuit network interface connector (OSI model).
PIA = Proprietary Information Agreement, also CA, also CDA, also NDA, also SA (legally binding restrictive contract).
PIC = Programmable Interrupt Controller.
PIC (2) = Lotus PICtor/PC Paint picture file.
PID = Passive Infrared Detector (electronic detection).
PID (2) = Product IDentification number (Microsoft OS + software).
PIF = Program Information File (Microsoft Windows 16-bit and 32-bit).
PII = Personally Identifiable Information, a.k.a. personal data (information technology security).
PIM = In Memory Processing (computer hardware/software architecture + technology).
PIM (2) = Personal Information Manager.
PIMA = Photographic and Imaging Manufacturers Association (now I3A).
PIN = Personal Identification Number (alphanumeric and/or numerical code used in electronic transactions to verify identity for added security).
PING = Improperly called Packet InterNet Groper (network/internet packet transmitting/receiving tool).
PIO = Programmed Input/Output.
PIR = Passive InfraRed sensor (electronic detection).
Pixel = PIcture ELement: RGB 3 dot pattern (color CRT/LCD/LED/TV), also pel, also px.
PKC = Public Key Certificate (electronic digital/identity encrypted certificate).
PKCS = Public Key Cryptography Standards (algorithm encryption) (RSA).
PKI = Public Key Infrastructure (cryptography encryption system).
PLA = Physical Layer Architecture (computer networking).
PLB = Personal Locator Beacon (radio/GPS locator device).
PLC = Power Line Communication (Carrier) technology (networking/internet digital data transmission).
PLC (2) = Penta Level Cell 5 bits/cell NAND nonvolatile memory mass storage media (Phase Change Memory) memory cell/element.
PLEDM = Phase-state Low Electron Drive Memory (Hitachi).
PLGA = Plastic Land Grid Array (Intel Pentium II CPU).
PLL = Phase Locked Loop (CPU clock multiplier chip).
PLM = Product Lifecycle Management.
P.M. = Post Meridiem (Latin) time convention, also PM (after midday, after 12:00:00 o'clock noon).
PM = Post Meridiem (Latin) time convention, also P.M. (after midday, after 12:00:00 o'clock noon).
PM (2) = Phase Modulation radio frequency waves with medium + high audio fidelity (medium, high + very high frequency wave bands).
PM (3) = Private Message.
PMCP = Programming Metadata Communication Protocol metadata scheme (ATSC).
PMO = Planetary Mass Object (astronomy).
PMP = Portable Music (Multimedia) Player.
PMR = Perpendicular Magnetic Recording hard disk drive (Toshiba).
PMTU = Path Maximum Transmission Unit (internet protocol).
PNAC = Port based Network Access Control (computer networking security technology).
PNG = Portable Network Graphics file.
PNI = Prescott New Instructions (Intel Prescott CPU 13 instructions).
PnP = Plug and Play technology.
Podcast = Spontaneous/scripted live/recorded online/shared digital audio/data/video/written educational/informative course/documentary/event/film/presentation/program.
PoE = Power over Ethernet (electrical power Ethernet cable carrier).
PoF = Power over Fiber (optical power fiber optic cable carrier).
PoL = Power over LAN (electrical power network cable carrier).
POLAN = Passive Optical Local Area Network.
POP = Post Office Protocol (e-mail exchange technology).
PoP (2) = Point of Presence.
PoP (3) = Package on Package (integrated circuit packaging method).
POP3 = Post Office Protocol version 3 (e-mail exchange technology).
POSIX = Portable Operating System Interface (interoperability compatibility standards) (IEEE).
POST = Power On Self Test (BIOS).
PotD = Photo (Pic) of the Day.
POTS = Plain Old Telephone Service.
POV = Point Of View (perspective/viewpoint).
PoweredUSB = Universal Serial Bus electric power delivery technology standard, also Retail USB, also USB PlusPower, also USB +Power, also USB Power Plus (requires USB 4.0/newer, USB-C + USB PD standards) (USB-IF).
ppcm = Pixels per centimeter (digitizing/electronic image/video device/display spatial measured density).
PPD = Pinned PhotoDiode (image sensor technology).
PPGA = Plastic Pin Grid Array (370 pin Intel Pentium II CPU).
ppi = Pixels per inch, also PPI (1 inch = 2.54 cm) (digitizing/electronic image/video device/display spatial measured density).
PPI (2) = Pixels per inch, also ppi (1 inch = 2.54 cm) (digitizing/electronic image/video device/display spatial measured density).
PPI (3) = Precise Pixel Interpolation (Intel I-740 2D/3D chipset).
PPM = Pulse Position Modulation (optical communications).
PPM (2) = Portable PixelMap picture file type + format (.ppm) (UNIX).
PPP = Point to Point Protocol (networking).
PPS = Passive Pixel Sensor (passive transistors photodetection image sensor).
PPT = Power Point Tracking, also MPPT (variable electrical energy power source efficiency maximization).
PPTP = Point to Point Tunneling Protocol (networking).
PPU = Physics Processing Unit (PhysX Ageia).
PR = Public Relations, also PageRank, also Page Rank.
PRAM = Parallel Random Access Machine (computer science).
PRI = Primary Rate Interface.
PRML = Partial Response Maximum Likelihood (IBM Hard Disk Drive technology).
PRN = PRiNter port.
PS = Post Scriptum (Latin) = postscript (after what has been written) (English).
PS (2) = Paragraph Separator control character sequence (text/ASCII/ANSI/EBCDIC/Unicode).
PS (3) = Personal Server (Intel portable computer).
PS/2 = IBM Personal System/2 computer.
PSA = Public Service Announcement.
PSAM = Program(med) (P) (ISO sensitivity), Shutter (S) (exposure time), Aperture (A) (focal opening) + Manual (M) (all parameters by hand) photographing priority modes, also PASM (photographic camera/device).
PSD = RGB indexed PhotoShop image file type + format (.PSD) (Aldus).
PSDRAM = Pseudostatic Random Access Memory, also PSRAM.
PSIP = Program and System Information Protocol (MPEG/ATSC).
PSK = Phase Shift Keying (digital communications).
PSR = Perimeter Surveillance Radar.
PSR (2) = Primary Surveillance Radar.
PSRAM = Pseudostatic Random Access Memory, also PSDRAM.
PSTN = Public Switched Telephone Network.
PsyOp = Psychological Operations (military tactics + strategies).
PsyWar = Psychological Warfare (military tactics + strategies).
PTP = Precision Time Protocol (networking) (IEEE).
PTR = Pool Type cooled Reactor (nuclear fission electrical energy power generator).
PTT = Push To Talk (Press To Transmit) (simplex radio/telephone telecommunications).
PV = PhotoVoltaic (solar) system (electrical energy generator using light to electricity conversion effect).
PV (2) = Promo(tional) Video [anime/animated/animation/live action/mixed film, docu(mentary), online/streaming/television episode/pilot/program/series ad(vertisment), clip, preview, previz(ualization), short, special, teaser, trailer].
PvE = Player versus Environment (multiplayer/single player gaming).
PvM = Player versus Monster (multiplayer/single player gaming).
PvP = Player versus Player (multiplayer/single player gaming).
PVR = Personal Video Recorder (TV analog to digital).
PWA = Progressive Web App(lication) (common web technologies web browser software/APIs).
PWB = Printed Wiring Board (electronics).
PWM = Pulse Width Modulation (communications).
PWR = Pressurized Water cooled Reactor (nuclear fission electrical energy power generator).
px = Picture element: RGB 3 dot pattern (color CRT/LCD/LED/TV), also pixel, also pel.
PXE = Pre(boot) eXecution Environment network interface (Intel/Systemsoft).
 🔝 
Q
QAM = Quadrature Amplitude Modulation digital frequency waves with extremely high + ultra high audio fidelity (Wi-Fi/wireless frequency wave bands communications).
QBE = Query By Example.
QD-LED = Quantum Dot Light Emitting Diode, also QLED.
QD-OLED = Quantum Dot Organic Light Emitting Diode, also QOLED.
QDR-SDRAM = Quad Data Rate Synchronous Dynamic Random Access Memory.
q.e.d. = Quod erat demonstrandum (Latin), also Q.E.D. = (that) (which) was to be demonstrated (shown) (English).
Q.E.D. = Quod Erat Demonstrandum (Latin), also q.e.d. = (that) (which) was to be demonstrated (shown) (English).
QEMM = Quarterdeck Systems 386 Expanded Memory Manager (QEMM386.SYS).
QFHD = Quad Full High Definition 3840x2160 screen resolution (displays, monitors, UHDTV).
QHD = Quad High Definition screen resolution standard, also Quad HD, also 2.5K (2560x1440 pixels, 1440p).
QLC = Quad Level Cell 4 bits/cell NAND nonvolatile memory mass storage media (Phase Change Memory) memory cell/element.
QLED = Quantum Dot Light Emitting Diode, also QD-LED.
QOLED = Quantum Dot Organic Light Emitting Diode, also QD-OLED.
QoS = Quality of Service (internet/networking server based technology).
QotD = Quote of the Day.
QPU = Quantum Processing Unit (quantum computer central processor).
QR Code = Quick Response Code (two dimensional/2D machine readable optical encoded digital matrix label/identifier/locator bar code).
Quad HD = Quad High Definition screen resolution standard, also QHD, also 2.5K (2560x1440 pixels, 1440p).
qubit = Quantum bit: unit of quantum information (quantum computing).
QUIC = Quick UDP Internet Connections protocol (computer communications network transport layer) (Google/IETF).
QZSS = Quasi Zenith Satellite System (Japan).
 🔝 
R
R&D = Research and Development.
RA = Radar Altimeter, also RALT.
RaaS = Ransomware as a Service (see ransomware).
RADAR = RAdio Detection And Ranging (radio location technology).
RADIUS = Remote Authentication Dial-In User Service (networking protocol).
RAID = Redundant Array of Inexpensive (Independent) Disks.
RALT = Radar ALTimeter, also RA.
RAM = Random Access Machine (computer science).
RAM (2) = Random Access Memory.
RAMDAC = Random Access Memory Digital to Analog Converter.
RAN = Radio Access Network.
Ransomware = Ransom Software [encryptors/crypto(virology), lockers, scareware, doxware, leakware, malware, RaaS].
RAR = Roshal ARchive (compressed) file type + format (.RAR) (WinRAR).
RARP = Reverse Address Resolution Protocol (networking).
RAS = Raster image file (Sun Microsystems).
RAS (2) = Row Access Strobe.
RAS (3) = Remote Access Service (Microsoft Windows NT/newer).
RAVE = Rendering Acceleration Virtual Engine (Apple).
RAW = Unencoded pixel data image file.
RBFNN = Radial Basis Functional Neural Network (artificial intelligence).
RBMT = Rules Based Machine Translation (computational linguistics).
RCS = Rich Communication Services messaging protocol standard.
RDF = Resource Description Framework graphic + meta data standard model (W3C/Netscape).
rDNS = Reverse DNS Resolution (domain name DNS of associated IP address lookup/query/request).
RDRAM = Rambus Dynamic Random Access Memory.
re = (In) re (Latin), also Re = concerning (in the matter of) (English).
Re (2) = (In) Re (Latin), also re = concerning (in the matter of) (English).
Re: = Reply (to) (mail, e-mail, memoranda, messaging).
REE = Rare Earth (chemical) Element (metal + lanthanide) (raw material).
REG = REGistry (registration database) file type + format (.REG) (Microsoft Windows).
Registry = Windows Registry (Registration) database (Microsoft).
RegEdit = Windows Registry Editor (REGEDIT.EXE) (Microsoft).
RegEdt32 = Windows NTx Registry Editor 32-bit (REGEDT32.EXE) (Microsoft).
Retail USB = Universal Serial Bus electric power delivery technology standard, also PoweredUSB, also USB PlusPower, also USB +Power, also USB Power Plus (requires USB 4.0/newer, USB-C + USB PD standards) (USB-IF).
RF = Range Finder previews image through device accessory, attachment or extension (optical devices, cinematography/photography/videography).
RFC = Request for Comments (internet standards).
RFI = Radio Frequency Interference.
RFID = Radio Frequency IDentification technology (IEEE).
RGB = Red Green Blue additive primary colors (hues) combination encoding model.
RIA = Rich Internet Application (desktop software program ported to the WWW).
RIFF = Resource Interchange File Format generic file container file type + format (.riff, .rif) (Microsoft/IBM).
RIMM = Rambus Inline Memory Module.
RIP = Routing Information Protocol (distance vector exchange routing + reachability networking standard).
RISC = Reduced Instruction Set Computing (computer + CPU architecture).
RITEG = RadioIsotope ThermoElectric Generator, also RPS, also RTG (nuclear fission electrical energy power generator battery conversion).
RIVA = Real Time Interactive Video and Animation (NVidia 3D).
RLE = Run Length Encoded graphic file (CompuServe/Microsoft).
RLV = Reusable Launch Vehicle (spacecraft).
RNN = Recurrent Neural Network (artificial intelligence).
RM386 = Helix Software 386 Expanded Memory Manager (RM386.EXE).
RMWR = Reduced (Resource renewable) Moderation Water cooled Reactor (nuclear fission electrical energy power generator).
RNA = RiboNucleic Acid (essential polymer for coding, decoding, regulation and expression of genes characteristic to all known life forms).
ROM = Read Only Memory.
ROT13 = ROTation by 13 letters of the alphabet (cryptographic encryption method).
ROFL = Rolling On the Floor Laughing, also ROTFL.
ROFLMAO = Rolling On The Floor Laughing My Aṩṩ Off.
ROTFL = Rolling On The Floor Laughing, also ROFL.
ROUV = Remotely Operated Underwater (Undersea) Vehicle.
ROV = Remotely Operated Vehicle.
ROYGBIV = Red Orange Yellow Green Blue Indigo Violet, also VIBGYOR [7 primary colors (hues) constituting visible white light spectrum (prism/rainbow optical dispersion) emitted by some stars, like our sun].
RPAS = Remotely Piloted Aircraft (Aerial) System.
RPAV = Remotely Piloted Aerial (Aircraft) Vehicle.
RPC = Remote Procedure Call (distributed computing client server interaction).
RPG = Role Playing Game (multiplayer/single player gaming).
RPKI = Resource Public Key Infrastructure (cryptography encryption resource certification).
rpm = Rotations per minute.
rps = Requests per second.
RPS (2) = Radioisotope Power System, also RITEG, also RTG (nuclear fission electrical energy power generator battery conversion).
RPTV = Rear Projection TeleVision.
RRAM = Real Random Access Machine (computer science).
rRNA = Ribosomal RibonNcleic Acid (essential non coding RNA ribozyme).
RSA = Rivest, Shamir and Adleman cryptographic authentication asymmetric encryption algorithm (data security).
RSS = Really Simple Syndication, also RDF Site Summary, also Rich Site Summary (WWW XML news reader).
RSTA = Reconnaissance, Surveillance and Target Acquisition (military strategy).
RSVP = Resource ReserVation Protocol (computer communications IP transport layer) (IETF).
RSVP-TE = Resource ReserVation Protocol Traffic Engineering (computer communications IP transport layer extension) (IETF).
RTC = Real Time Computing.
RTC (2) = Real Time Clock (BIOS).
RTC (3) = Real Time Communication.
RTD = Real Time Data.
RTF = Rich Text Format file type + format (.RTF) (Microsoft Word document).
RTFM = Read The Fµking Manual!
RTG = Radioisotope Thermoelectric Generator, also RITEG, also RPS (nuclear fission electrical energy power generator battery conversion).
RTL = Resistor Transistor Logic (electronics).
RTM = Released To Manufacturing (Microsoft product retail/final/gamma/Gold release).
RTOS = Real Time Operating System (computing).
RTP = Real time Transport Protocol (multicast advertising) (IETF).
RTS = Real Time Strategy game (multiplayer/single player gaming).
RTSP = Real Time Streaming Protocol (multicast advertising) (IETF).
RTW = Released To Web (Microsoft product retail/final/gamma/Gold release).
RvR (2) = Race versus Race (multiplayer/single player gaming).
RvR = Realm versus Realm (multiplayer/single player gaming).
RWIN = Receive WINdow (internet protocol).
RYB = Reg Yellow Blue traditional subtractive primary colors (hues) combination encoding model.
 🔝 
S
S/N = Signal to Noise ratio, also SNR (analog/digital 3D/audio/communications/imaging/video parameter).
S3TC = S3 Texture Compression architecture (S3 Savage3D/2000).
SA = Secrecy Agreement, also CA, also CDA, also NDA, also PIA (legally binding restrictive contract).
SaaS = Software as a Service [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
SACD = Super Audio Compact Disc (Sony/Philips).
SAN = System Area Network.
SAN (2) = Storage Area Network.
SAP = Session Announcement Protocol (multicast advertising) (IETF).
SAP (2) = Service Access Point (OSI network endpoint labelling system) (IEC/IEEE).
SAR = Specific Absorption Rate (electromagnetic energy exposure per unit of biological body mass).
SAR (2) = Synthetic Aperture Radar.
saRNA = Small activating RiboNucleic Acid (small double stranded RNA corresponding to the genetic sequence of a gene used for inducing transcriptional gene activation through RNAa).
SARS-CoV-2 = Severe Acute Respiratory Syndrome CoronaVirus 2, also 2019-nCoV, also HCoV-19 (coronavirus strain responsible for COVID-19 airborne transmissible contagious infectious respiratory illness). STØP  CoronaVirus  C❂VID-19
SARSAT = Search and Rescue Satellite Aided Tracking (NOAA).
SAS = Serial Attached SCSI Hard Disk Drive.
SAT = Stepped Atomic Time (high precision atomic time adjustment) (ITU-R).
SATA = Serial Advanced Technology Attachment Disk Drive (Western Digital).
SATA Express = Serial Advanced Technology Attachment Express PCIe based SSD interface standard, also SATAe, also M.2/mSATA, also NGFF.
SATA-150 = Serial Advanced Technology Attachment 150 MB/sec tranfer rate Disk Drive (Western Digital).
SATA-300 = Serial Advanced Technology Attachment 300 MB/sec tranfer rate Disk Drive (Intel).
SATAe = Serial Advanced Technology Attachment express PCIe based SSD interface standard, also SATA Express, also M.2, also NGFF.
SB = Bachelor of Science (Latin: Scientiae Baccalaureus), also BS, also BSc, also ScB (undergraduate level academic degree).
SBK = EMU Sound Font BanK (Creative Labs Sound Blaster sound cards).
SBR = Space Based (Borne) Radar.
Scamware = Scamming Software (dishonest, false, fraudulent, illegal, abusive, deceptive, misleading, disguised, malicious).
SCaN = Space Communications and Navigation program (NASA worldwide complexes network, USA/Spain/Australia).
ScB = Bachelor of Science (Latin: Scientiae Baccalaureus), also BS, also BSc, also SB (undergraduate level academic degree).
SCCP = Signalling Connection Control Part (network routing layer protocol) (ITU).
Sci-Fi = Science Fiction, also SF (speculative fiction multimedia genre).
SCR = SubCritical Reactor (nuclear fission electrical energy power generator).
SCSI = Small Computers System Interface Hard Disk Drive.
SCSI-1 = Small Computers System Interface 1 specifications.
SCSI-2 = Small Computers System Interface 2 specifications.
SCSI-3 = Small Computers System Interface 3 specifications.
SCTP = Stream Control Transmission Protocol (computer communications IP transport layer) (IETF).
SCWR = SuperCritical Water cooled Reactor (nuclear fission electrical energy power generator).
SD = Secure Digital nonvolatile memory mass storage removable media cards (SanDisk/Panasonic/Matsushita/Toshiba).
SDDS = Sony Dynamic Digital Sound 7.1 (7 + 1 = 8 channels) theater sound technology (3D spatial audio).
SDH = Synchronous Digital Hierarchy (synchronous telecommunications protocol).
SDHC = Secure Digital High Capacity nonvolatile memory mass storage removable media cards (SD Association).
SDI = Serial Digital Interface.
SDK = Software Development (Developers) Kit (computer programming).
SDM = Software Development Methodology (structuring, planning + control computer programming framework).
SDMA = Space Division Multiple Access (communications).
SDP = Service Discovery Protocol (networked devices + services automatic detection).
SDP (2) = Session Description Protocol (multimedia communications) (IETF).
SDP (3) = Software Defined Perimeter (computer security).
SDP (4) = Software Development Process (computer programming planning + management).
SDR = Standard Dynamic Range 8 bits/sample (8-bit) audio + visual audio/imaging/motion/photo/video standard (analog + digital acoustics/cinematography/photography/videography).
SDRAM = Synchronous Dynamic Random Access Memory.
SDS = Satellite Data Service.
SDSL = Symmetrical Digital Subscriber Line modem technology.
SDUC = Secure Digital Ultra Capacity nonvolatile memory mass storage removable media cards (SD Association).
SDX = Storage Data Acceleration (Western Digital).
SDXC = Secure Digital EXtended Capacity nonvolatile memory mass storage removable media cards (SD Association).
SECAM = SEquential Couleur Avec Mémoire (SEquential Color With Memory) (French TV standard: 625 lines).
SECC = Single Edge Contact Cartridge (Intel Pentium II CPU).
SECC2 = Single Edge Contact Cartridge 2 (Intel Pentium III CPU).
SED = Surface Conduction Electron Emitter flat screen Display (Canon/Toshiba).
SED (2) = Self Extraction Directive File (Microsoft Windows Setup IEAK developer kit). IEAK
SEL = Software Emulation Layer (Microsoft Direct3D).
SEND = Satellite Emergency Notification Device (radio/GPS locator device).
SEO = Search Engine Optimization (web site internet traffic improvement).
SEPIRB = Submarine Emergency Position Indicating Radio Beacon (radio locator device).
SEPP = Single Edge Processor Package (Intel Celeron CPU).
Serial ATA = Ultra Serial ATA 1500 v1.0 Hard Disk Interface: 1.5 Gb/sec (Western Digital).
SERP = Search Engine Results Page (internet).
SET = Secure Electronic Transaction technology.
SF = Science Fiction, also Sci-Fi (speculative fiction multimedia genre).
SF2 = EMU Sound Font Bank version 2.0 (Creative Labs Sound Blaster sound cards).
SFF = Small Form Factor (motherboard form factor).
SFN = Short File Name (maximum 8.3 = 11 total characters) (DOS/Microsoft MS-DOS + Microsoft Windows/WfWG 16-bit).
SFR = Sodium Fast cooled Reactor (nuclear fission electrical energy power generator).
SFTP = SSH (Secure) File Transfer Protocol server client communications standard (IETF) (SSL + TLS technologies).
SFX = Special effect(s), also FX (visual arts, computing).
SGCP = Simple Gateway Control Protocol (networking).
SGI = Silicon Graphics Incorporated.
SGML = Standard Generalized Markup Language (W3C).
SGRAM = Synchronous Graphics Random Access Memory.
SHA = Secure Hash Algorithm encryption (cryptography) (NSA).
SHDSL = Single pair High bit rate Digital Subscriber Line modem technology.
SHF = Super High Frequency (centimeter band) radio wave bands 3-30 GHz (ITU).
SHLLV = Super Heavy Lift Launch Vehicle (spacecraft).
SHMUP = SHoot 'eM (SHoot theM) UP game, also STG (multiplayer/single player gaming).
SHV = Super Hi-Vision, also UHD, also UHDTV, also UHDV (NHK/Fujitsu). Digital TV/Video technology, 16:9 (7680x4320 pixels, 4320p), 60 frames/sec, 21 GHz frequency band, 24 Gb/sec uncompressed or 128 Mb/sec MPEG-4 AVC/H.264 compressed signal, 22.2 digital surround audio channels.
SIB = Sodium (Natrium) Ion rechargeable/replaceable electric energy accumulator/Battery/cell, also Na-ion, also NIB.
s.i.c. = Spelled (Said) in context (copy) or spelling is correct.
sic = Sic erat scriptum, also SIC (Latin) = thus (intentionally, exactly as) was it written (English).
SIC (2) = SIC erat scriptum, also sic (Latin) = thus (intentionally, exactly as) was it written (English).
SIC (3) = Segmented Integer Counter, also CM, also ICM (authenticated cryptographic encryption).
SID = Security IDentifier unique 16-byte (128-bit) encrypted integer reference label (IEC/IETF/ISO/TOG software + hardware identification standard).
SIGINT = SIGnals INTelligence (gather, decrypt, analyze, integrate, exploit management).
SIM = SIMulation game (multiplayer/single player gaming).
SIMD = Single Instruction Multiple Data stream (Intel Pentium/newer CPU multimedia streaming instructions).
SIMM = Single In-line Memory Module (integrated circuit module technology).
SIP = Session Initiation Protocol (multicast advertising) (IETF).
SIPP = Single In-line Pin Package (integrated circuit packaging method).
SIR = Strong InfraRed, also SWIR band/spectrum (invisible electromagnetic thermal radiation).
SL = Supervised Learning (computer prediction training based on algorithms, analysis, associations, classification, models, objects, signals, variables).
SL-DRAM = Synchronous Layout Dynamic Random Access Memory (Siemens/Micron).
SL-HDR = SDR to HDR media profile using static and dynamic metadata (STMicroelectronics/Philips/CableLabs/Technicolor).
SLAR = Side Looking Airborne Radar (aerial/space vehicle mounted imaging radar).
SLC = Subscriber Line Charge.
SLC (2) = Single Level Cell 1 b/cell NAND nonvolatile memory mass storage media (Phase Change Memory) memory cell/element.
SLDRAM = Synchronous Link Dynamic Random Access Memory (Hyundai).
SLF = Super Low Frequency (kilometer band) radio wave bands 30-300 Hz (ITU).
SLI = Scan Line Interleave technology (2 or more 3dfx Voodoo2/3/4/5/6 chipsets on same video controller).
SLIP = Serial Line Internet Protocol (networking).
SLLV = Small Lift Launch Vehicle (spacecraft).
SLM = Spatial Light Modulator.
SLP = Service Location Protocol, also srvloc (LAN devices + services discovery).
SLR = Single Lens Reflex photographic imaging + video camera (mirror prism camera).
SLV = Satellite Launch Vehicle (spacecraft).
SM = Master of Science (Latin: Scientiae Magistrum), also MS (graduate level academic degree).
SMART = Self Monitoring Analysis Reporting Technology (hard disk).
SMB = Server Message Block (Microsoft communication sharing protocol).
SMBH = SuperMassive Black Hole (astronomy).
SMDS = Switched MultiMegabit Data Service.
SMIL = Synchronized Multimedia Integration Language (W3C).
SMP = Symmetric (shared memory) MultiProcessing technology (computing).
SMP (2) = Social Media Platform.
SMPTE = Society of Motion Picture and Television Engineers.
SMR = Small Modular Reactor (nuclear fission electrical energy power generator).
SMR (2) = Shingled Magnetic Recording hard disk drive (Seagate/Hitachi).
SMS = Short Message (Messaging) Service (networked computer/device communication protocol standard).
SMT = Simultaneous MultiThreading (superscalar CPU) (parallel computing).
SMT (2) = Statistical Machine Translation (computational linguistics).
SMTP = Simple Mail Transfer Protocol (e-mail exchange technology).
SN = Space Network (NASA worldwide space programs network) (USA + other countries).
SNAP = SubNetwork Access Protocol (network multiplexing technology) (IEEE).
SNMP = Simple Network Management Protocol.
SNR = Signal to Noise Ratio, also S/N (analog/digital 3D/audio/communications/imaging/video parameter).
SOAP = Simple Object Access Protocol (W3C internet technology using XML).
SO-DIMM = Small Outline Dual Inline Memory Module interface connector.
SoC = System on a Chip (single dedicated analog/digital integrated circuit).
SOCKS = SOCK-et-S (open internet/networking proxy protocol standard).
SOCKS4 = SOCK-et-S version 4, also SOCKSv4 (open internet/networking proxy protocol standard with encrypted authentication).
SOCKSv4 = SOCK-et-S version 4, also SOCKS4 (open internet/networking proxy protocol standard with encrypted authentication).
SOCKS4a = SOCK-et-S version 4a, also SOCKSv4a (open internet/networking proxy protocol standard with encrypted authentication).
SOCKSv4a = SOCK-et-S version 4a, also SOCKS4a (open internet/networking proxy protocol standard with encrypted authentication).
SOCKS5 = SOCK-et-S version 5, also SOCKSv5 (open internet/networking proxy protocol standard with encrypted authentication).
SOCKSv5 = SOCK-et-S version 5, also SOCKS5 (open internet/networking proxy protocol standard with encrypted authentication).
SOHO = Small Office / Home Office.
SOI = Silicon On Insulator CPU technology (Intel).
SONET = Synchronous Optical NETworking protocol (digital communications).
S.O.S. = S [···] O [–––] S [···] international Morse code distress signal, also SOS [···–––···].
SOS = S [···] O [–––] S [···] international Morse code distress signal, also S.O.S. [···–––···].
SP = Single Play vinyl disc/record (45 rpm, 7 in = 18 cm, small size, short capacity analog sound gramophone/phonograph/record player storage medium).
SP (2) = Service Pack(age) (Microsoft Windows OS + software update/upgrade).
Spam = Unsolicited, unauthorized, unwanted, dishonest, false, fraudulent, illegal, abusive, deceptive, misleading, disguised, malicious, ad(vertising)/disinformation/propaganda mass e-mail distribution.
Spamware = Spamming Software used for mass (spam) e-mail distribution (see spam).
SPARC = Scalable Processor ARChitecture (computer + CPU instruction set) (Sun Microsystems).
SparkLink = Short range wireless technology standard, also NearLink (Huawei).
SPC = Solar Powered Car.
SPD = Serial Presence Detection (EEPROM).
S/PDIF = Sony/Philips Digital Interchange Format (digital audio surround interface).
SPF = Stateful Packet Filtering (internet/network firewalls).
SPF (2) = Sender Policy Framework (e-mail exchange technology).
SPI = Stateful Packet Inspection (internet/network dynamic filtering).
SPI (2) = Sensitive Personal Information, a.k.a. personal data (information technology security).
SPI (3) = Service Provider Interface (3rd party API/programming extension).
SPI-2 = SCSI Parallel Interface 2 technology (SCSI-3).
SPI-3 = SCSI Parallel Interface 3 technology (SCSI-3).
SPP = Standard Parallel Port.
SPTI = SCSI Pass Through Interface.
SPURV = Self Propelled Underwater (Undersea) Research Vehicle.
SPV = Solar Powered Vehicle.
SPX = Sequenced Packet Exchange (Novell Netware).
Spyware = Spying Software (malware, ransomware, adware, trojans, beacons, monitoring, fingerprinting, surveillance, tracking, hijacking, spoofing, leaking, auditing).
SQL = Structured Query Language.
SRAM = Static Random Access Memory.
SRD = Short Range Device (wireless communication technology) (CEPT/IEEE).
sRGB = 32-bit Red Green Blue additive primary colors (hues) combination encoding technology (Microsoft/Hewlett Packard).
sRGB64 = 64-bit Red Green Blue double precision additive primary colors (hues) combination encoding technology (Microsoft/Hewlett Packard).
SRPG = Simulation Role Playing Game or Strategy Role Playing Game (multiplayer/single player gaming).
SRT = SubRip (text based) subTitle file type + format (.SRT).
Srvloc = Service Location Protocol, also SLP (LAN devices + services discovery).
SSA = Serial Storage Architecture bus/interface (device/peripheral).
SSA (2) = Sub Station Alpha (ANSI/Unicode/UTF-8) subtitles file type + format (.SSA).
SSAS = Ship Security Alert System (radio/GPS locator device).
SSB = Single SideBand modulation radio frequency waves with low audio fidelity (long, medium + short frequency wave bands).
SSB-SC = Single SideBand Suppressed Carrier modulation radio frequency waves with low audio fidelity (long, medium + short frequency wave bands).
SSC = John C. Stennis Space Center (NASA space center, USA).
SSD = Solid State memory Disk (RAM drives).
SSDP = Simple Service Discovery Protocol (networking).
SSE = Streaming SIMD Extensions (Intel Pentium III/newer CPU 70 instructions).
SSE2 = Streaming SIMD Extensions version 2 (Intel Pentium IV/newer CPU 144 instructions).
SSE3 = Streaming SIMD Extensions version 3 (Intel Pentium IV/newer CPU 157 instructions).
SSE4 = Streaming SIMD Extensions version 4 (Intel Core/AMD K8/newer dual/multicore CPU 54 instructions).
SSH = Secure Shell Protocol (cryptographic encrypted network).
SSHD = Solid State Hybrid Drive (RAM and hard drives).
SSI = Small Scale Integration (integrated circuit).
SSI (2) = Server Side Includes (simple HTML interpreted scripting language).
SSID = Service Set IDentifier (wireless LAN standard for devices sharing same network).
SSL = Secure Sockets Layer (cryptographic encrypted network protocol).
SSLV = Small Satellite Launch Vehicle (spacecraft).
SSLv2 = Secure Sockets Layer version 2 (cryptographic encrypted network protocol).
SSO = Sun (Solar) Synchronous Orbit (astronomy).
SSR = Secondary Surveillance Radar.
SSR (2) = Super Scalar Rendering (3D imaging/motion/photo/video).
SSS = Server Side Scripting (web server interpretable scripts).
SSSB = Small Solar System Body (astronomy).
SST = Spitzer Space Telescope (astronomical observational instrument).
SSTO = Single Stage To Orbit spacecraft, vehicle.
SSTOVL = Supersonic Short Take Off and Vertical Landing aircraft, spacecraft, vehicle (NASA).
STUN = Session Traversal Utilities for NAT (interactive networking protocol + standards).
SSTP = Secure Socket Tunneling Protocol (networking).
SSTP (2) = Simple Symmetric Transport Protocol (messaging).
ST = Standard Time, also STD (normal/cold season country/local/regional geopolitical time).
STA = Surveillance and Target Acquisition (military strategy).
STA (2) = SCSI Trade Association.
STAR = Surveillance, Target Acquisition and Reconnaissance (military strategy).
STD = STanDard time, also ST (normal/cold season country/local/regional geopolitical time).
StD (2) = Straight to Disc (film, streaming, television, video).
STD/VR = STanDard Voltage Regulator (CPU).
STEVE = Strong Thermal Emission Velocity Enhancement (optical atmospheric phenomenon).
STG = ShooTing Game or Shoot Them (ShooT 'em) up Game, also SHMUP (multiplayer/single player gaming).
STM = Scanning Tunneling Microscope.
STOBAR = Short Take Off But (Barrier) Arrested Recovery aircraft, vehicle.
STOL = Short Take Off and Landing aircraft, vehicle.
STOVL = Short Take Off and Vertical Landing aircraft, vehicle.
StV = Straight to Video (film, streaming, television, video).
SUB(s) = SUBtitle(s).
Super AMOLED = Super Active Matrix Polymer Organic Light Emitting Diode display (Samsung).
Surface Web = Publicly accessible indexable (indexed) internet (see also Clearnet, Lightnet, Visible Web).
SVCD = Super Video Compact Disc (enhanced MPEG-1 encoding).
SVG = Scalable Vector Graphics XML 2D graphics language + file type + format (.SVG) (W3C).
SVGA = Super Video Graphics Array standard (800x600 pixels, 600p).
SVM = Support Vector Machine (network) (supervised computer prediction training based on algorithms, analysis, associations, classification, models, objects, signals, variables).
SVoD = Subscription based Video on Demand (membership based multimedia distribution service).
SVS = Synthetic Vision System (airborne/avionics).
SWIR = Short Wave InfraRed, also SIR band/spectrum (invisible electromagnetic thermal radiation).
SWPC = Space Weather Prediction Center (NOAA, USA).
SX = SimpleX (one direction at a time broadcast/radio/telephone telecommunications) (ITU).
SX (2) = X86 Intel CPU without FPU (386/SX, 486/SX).
SXGA = Super eXtended Graphics Array standard (1400x1050 pixels, 1050p), also SXVGA.
SXGA+ = Super eXtended Array Plus standard (1280x1024 pixels, 1024p), also SXVGA+.
SXVGA = Super eXtended Video Graphics Array standard (1400x1050 pixels, 1050p), also SXGA.
SXVGA+ = Super eXtended Video Graphics Array Plus standard (1280x1024 pixels, 1024p), also SXGA+.
SynBio = Synthetic Biology (multidisciplinary sciences dedicated to design + develop superior, novel, useful biological devices, organisms, parts, systems).
Sync SRAM = Synchronous burst Static Random Access Memory (CPU L2 cache).
 🔝 
T
T&L = Transform & Lighting (3D imaging/motion/photo/video).
T-Buffer = Multiple Frame Buffer rendering engine (3dfx Voodoo4/5/6 3D).
TAB = Technical Advisory Board.
TAC = Technical Advisory Committee (Council).
TAG = Technical Advisory Group.
TAI = Temps Atomique International, also IAT (International Atomic Time).
TAP = Technical Advisory Panel.
TAPI = Telephony Application Programming Interface.
TAR = Tape ARchive (compressed) file type + format (.TAR) (Linux/UNIX).
TAS = Technical Advisory Service(s).
TB = TeraByte (1 TB = 1024 GigaBytes = 1048576 MegaBytes).
TBMT = Transfer Based Machine Translation (computational linguistics).
TBps = Terabytes per second (TB/sec).
tbps = terabits per second (Tb/sec).
TBS = Turn Based Strategy game (multiplayer/single player gaming).
TBW = TeraBytes Written (nonvolatile memory mass storage media life expectancy).
TCE = Technology Critical (chemical) Element (raw material).
TCG = Temps Coordonnée Géocentrique, also GCT (Geocentric Coordinate Time) (IAU).
TCG (2) = Trading Card Game (board/role playing gaming).
TCL = Transform, Clipping and Lighting (ATI 3D video).
TCO = Total Cost of Ownership (business IT).
TCP = Transmission Control Protocol (networking).
TCP/IP = Transmission Control Protocol/Internet Protocol (networking).
TCV = Through Chip Via (integrated circuit vertical electrical connection).
TD = Tower Defense game (computer, platform, online video gaming).
TDD = Time Division Duplexing (full duplex over half duplex broadcast/radio/telephone telecommunications).
TDD (2) = Telecommunications Device for the Deaf (text communication + visual device for people with sensory difficulties + impairments).
TDM = Time Division Multiplexing (synchronized bidirectional broadcast/radio telecommunications).
TDMA = Time Division Multiple Access (digital communications).
TDMR = Two Dimensional (2D) Magnetic Recording hard disk drive (INSIC).
TDNN = Time Delay Neural Network (artificial intelligence).
TDRSS = Tracking and Data Relay Satellite System (NASA communications space satellites network, USA).
TEAP = Tunnel Extensible Authentication Protocol (computer networking communications cryptographic verification) (IETF).
TEC = ThermoElectric Cooler (Peltier effect).
TECHINT = TECHnical INTelligence (gather, decrypt, analyze, integrate, exploit management).
TED = Transient Electromagnetic Disturbance, also EMP (brief burst of electromagnetic energy).
TED (2) = Technology, Entertainment, Design media organization (USA/Canada).
TEL = Technology Enhanced Learning, also TELL.
TELL = Technology Enhanced Language Learning, also TEL.
Ten-G = Ten (10) Gravity (Gravitational) force [planet Earth approximated (from g=9.80665 m/sec2) gravity force equivalent value].
Texel = Bilinear TEXtured pixEL (3D imaging/motion/photo/video).
TFA = Two Factor Authentication, also 2FA (electronic verification method).
TFR = Terrain Following Radar.
TFT = Thin Film Transistor (active matrix display imaging) (electronics).
TFTP = Trivial File Transfer Protocol.
TGA = TrueVision Graphic file (Targa).
TH = Time Hopping (digital communications).
THD = Total Harmonic Distortion.
THF = Tremendously (TeraHertz) High Frequency (submillimeter band) radio wave bands 0.3-3 THz (ITU).
THSS = Time Hopping Spread Spectrum (radio communications).
Thunderbolt = PCIe + DP serial hardware interface (Apple/Intel).
THX = Tomlinson Holman's eXperiment theater Hi-Fi audio/video standard (LucasFilm Home/Cinema: George Lucas' first film: "THX 1138").
THX EX = Tomlinson Holman's eXperiment EXtended theater Hi-Fi audio/video extended standard (LucasFilm Home/Cinema: George Lucas' first film: "THX 1138").
TIA = Thanks In Advance.
TIFF = Tagged Image File Format file type + format (.tiff, .tif) (Aldus).
TIL = Today I Learned.
TKIP = Temporal Key Integrity Protocol (WPA cryptographic encryption).
TLC = Triple Level Cell 3 bits/cell NAND nonvolatile memory mass storage media (Phase Change Memory) memory cell/element.
TLD = Top Level Domain [internet (root) domain name suffix: .com, .org, .net, etc].
TL;DR = Too Long; Didn't Read.
TLR = Twin Lens Reflex photographic imaging + video camera (mirror prism camera).
TLS = Transport Layer Security secure network protocol.
TMG = Time Management Game (multiplayer/single player gaming).
TMDS = Transition Minimized Differential Signaling DVI + HDMI high speed serial data technology (Silicon Image).
TMI = Too Much Information.
TMM = Terabit Molecular Memory technology (Toshiba DVD).
TNO = Trans Neptunian Object (astronomy).
TNR = Thermal Neutron Reactor (nuclear fission electrical energy power generator).
TNT = TwiN Texel processing engine (NVidia RIVA TNT 2D/3D).
TNT2 = TwiN Texel 2 processing engine (NVidia RIVA TNT2 2D/3D).
TOG = The Open Group, formerly Open Software Foundation (OSF).
TOR = The Onion Router (volunteer overlay network for confidential anonymous/pseudonymous communications).
TOS = Terms Of Service.
TP = Transmitter Responder, also TPDR, also Transponder, also XPNDR, also XPDR (radio locator device).
TPA = Third Party Authenticator (electronic authentication method).
TPDR = Transmitter Responder, also TP, also Transponder, also XPNDR, also XPDR (radio locator device).
TPM = Trusted Platform Module (cryptographic authentication security standard) (TCG/IEC/ISO).
TPS = Third Person Shooter game (computer, platform, online video gaming).
TPU = Texture Processing Unit (3dfx Voodoo family 3D chipsets).
Transponder = Transmitter Responder, also TP, also TPDR, also XPNDR, also XPDR (radio locator device).
TRIPS = Tera-op Reliable Intelligently adaptive Processing System (IBM CPU).
tRNA = Transfer RibonNcleic Acid (adaptor RNA responsible for link between mRNA and amino acid protein sequence).
TRP = Tactical Role Playing game (multiplayer/single player gaming).
TRPG = Tactical Role Playing Game (multiplayer/single player gaming).
TRPG (2) = Tabletop Role Playing Game (multiplayer/single player gaming).
TSIG = Transaction Signature (networking protocol).
TSR = Terminate and Stay Resident program/device/driver.
TSTO = Two Stage To Orbit spacecraft, vehicle.
TSV = Through Silicon Via (integrated circuit vertical electrical connection).
TT = Terrestrial Time (planet Earth astronomical time standard) (IAU).
TTF = True Type Font file type + format (.TFF).
TTL = Time To Live (internet protocol).
TTL (2) = Transistor Transistor Logic (electronics).
TTL (3) = Through The Lens (flash) metering (cinematography/photography/videography camera, device, recorder, lens).
TTS = TeleTypeSetter (6-bit ASCII code).
TTRPG = TableTop Role Playing Game (multiplayer/single player gaming).
TV = TeleVision.
TWI = True Web Integration (Microsoft).
TTY = TeleTYpe text communication + visual device (teleprinter, teletype writer, text terminal, command line interface).
TTY (2) = Talk To You.
TTYL = Talk To You Later.
 🔝 
U
U3D = Universal 3D graphics format technology (3DIF).
UAA = Universal Audio Architecture (Microsoft).
UAE = Unrecoverable Application Error.
UAI = Union Astronomique Internationale, also IAU (International Astronomical Union).
UAP = Unexplained Anomalous Phenomenon (unidentified, unknown aerial objects or phenomena).
UART = Universal Asynchronous Receiver Transmitter (serial communications device).
UAS = Unmanned (Uncrewed) Aircraft (Aerial) System.
UAS (2) = USB Attached SCSI (INCITS/SCSITA/MSC/USB-IF/ASUS USB 3.0 standard computer protocol).
UASP = USB Attached SCSI Protocol (INCITS/SCSITA/MSC/USB-IF/ASUS USB 3.0 standard computer protocol).
U-ATA = Ultra Advanced Technology Attachment (EIDE/ATA disk controller/drive).
UAV = Unmanned (Uncrewed) Aerial (Aircraft) Vehicle.
UAVS = Unmanned (Uncrewed) Aircraft (Aerial) Vehicle System.
UBV = Ultraviolet Blue Visual photometric system (astronomy).
UCAV = Unmanned (Uncrewed) Combat Aerial (Aircraft) Vehicle.
UCC = User Created Content, also User Generated Content (online/internet audio, document, image, message, post, text, video, web page).
UCE = Unsolicited Commercial E-mail.
UCS = Universal multiple Byte (binary octet) coded Character Set international standard (IEC/ISO).
UDDI = Universal Description, Discovery and Integration (network protocol).
UDF = Universal Disc Format (Compact Disc) (OSTA).
UDI = Unified Display Interface.
UDI (2) = Uniform Driver Interface.
UDMA = Ultra Direct Memory Access (EIDE/ATA disk controller/drive).
UDMA/33 = Ultra DMA/Ultra ATA 33.33 MB/sec tranfer rate (EIDE/ATA hard disk controller/drive technology).
UDMA/66 = Ultra DMA/Ultra ATA 66.66 MB/sec tranfer rate (EIDE/ATA hard disk controller/drive technology).
UDMA/100 = Ultra DMA/Ultra ATA 100 MB/sec tranfer rate (EIDE/ATA hard disk controller/drive technology).
UDMA/133 = Ultra DMA/Ultra ATA 133 MB/sec tranfer rate (EIDE/ATA hard disk controller/drive technology).
uDNS = Unicast Domain Name System UDP protocol (networking: each IP can be routed/resolved to a dedicated DNS server).
UDO = Ultra Density Optical drive (Plasmon).
UDP = User Datagram Protocol (networking).
UDSL = Universal Digital Subscriber Line modem technology (Texas Instruments).
UDSP = Uniprocessor (Utilizing) Digital Signal Processor (drive electronics architecture).
UE = Union Européenne, also EU (European Union).
UED = User Experience Design, also UX, also UX Design, also UXD, also XD.
UEFI = Unified Extensible Firmware Interface computer/device BIOS technology (AMD/AMI/Apple/Dell/HP/IBM/Intel/Lenovo/Microsoft/Phoenix).
UFO = Unidentified Flying Object (anomalous, unexplained, unknown aerial objects or phenomena).
UFS = UNIX File System.
UFS (2) = Universal Flash Storage nonvolatile memory mass storage media technology (JEDEC).
UFS 1.0 = Universal Flash Storage 1.0 nonvolatile memory mass storage media technology 300 MB/sec (JEDEC).
UFS 1.1 = Universal Flash Storage 1.1 nonvolatile memory mass storage media technology 300 MB/sec (JEDEC).
UFS 2.0 = Universal Flash Storage 2.0 nonvolatile memory mass storage media technology 1.2 GB/sec (JEDEC).
UFS 2.1 = Universal Flash Storage 2.1 nonvolatile memory mass storage media technology 1.2 GB/sec (JEDEC).
UFS 2.2 = Universal Flash Storage 2.2 nonvolatile memory mass storage media technology 1.2 GB/sec (JEDEC).
UFS 3.0 = Universal Flash Storage 3.0 nonvolatile memory mass storage media technology 2.9 GB/sec (JEDEC).
UFS 3.1 = Universal Flash Storage 3.1 nonvolatile memory mass storage media technology 2.9 GB/sec (JEDEC).
UFS 4.0 = Universal Flash Storage 4.0 nonvolatile memory mass storage media technology 5.8 GB/sec (JEDEC).
UGC = User Generated Content, also User Created Content (online/internet audio, document, image, message, post, text, video, web page).
UGV = Unmanned (Uncrewed) Ground Vehicle.
UHD = Ultra High Definition, also SHV, also UHDTV, also UHDV (NHK/Fujitsu) (digital TV standard: 4320 lines).
UHDTV = Ultra High Definition TeleVision, also SHV, also UHD, also UHDV (NHK/Fujitsu) (digital TV standard: 4320 lines).
UHDV = Ultra High Definition Video, also SHV, also UHD, also UHDTV (NHK/Fujitsu) (digital TV standard: 4320 lines).
UHF = Ultra High Frequency (decimeter band) radio wave bands 300 MHz-3 GHz (ITU) + radar wave bands 1-4 GHz (IEEE).
UI = User Interface, also GUI [2D (flat)/3D (spatial) computer/device environment/platform/system API].
UICN = Union Internationale pour la Conservation de la Nature, also IUCN (International Union for Conservation of Nature).
UICPA = Union Internationale de Chimie Pure et Appliquée, also IUPAC (International Union of Pure and Applied Chemistry).
UIT = Union Internationale des Télécommunications, also ITU (International Telecommunications Union) [ONU|OVN|UN(O)].
UL 1449 = Underwriter Laboratory tests certification technology for Transient Voltage Surge Suppressors compliance.
ULA = Unique Local Address (private IPv6 networks).
ULF = Ultra Low Frequency (kilometer band) radio wave bands 300 Hz-300 KHz (ITU).
ULSI = Ultra Large Scale Integration (integrated circuit).
Ultra160/m SCSI = Ultra3 SCSI technology (160 MB/s burst transfer rate).
Ultra2b SCSI = Ultra2 SCSI technology (80 MB/s burst transfer rate).
Ultra ATA = Ultra Advanced Technology Attachment (EIDE/ATA disk controller/drive).
Ultra DMA = Ultra Direct Memory Access (EIDE drive controller).
Ultra SCSI = Ultra1 SCSI technology (40 MB/s burst transfer rate).
UMA = Upper Memory Area.
UMB = Upper Memory Block.
UMPC = Ultra Mobile Personal Computer.
UMR = Upper Memory Region.
UMTS = Universal Mobile Telecommunications System (digital communications) (ITU).
UNAIDS = United Nations program on HIV/AIDS [ONU|OVN|UN(O)].
UNC = Uniform Naming Convention.
UNDI = Universal Network Device Interface API (networking) (Intel PXE).
UNDP = United Nations Development Program [ONU|OVN|UN(O)].
UNEP = United Nations Environment Program [ONU|OVN|UN(O)].
UNESCO = United Nations Educational, Scientific and Cultural Organization [ONU|OVN|UN(O)].
UNFCCC = United Nations Framework Convention on Climate Change [ONU|OVN|UN(O)].
UNFPA = United Nations Population Fund (formerly United Nations Fund for Population Activities) [ONU|OVN|UN(O)].
UN-HABITAT = United Nations Human Settlements Program (Habitat) [ONU|OVN|UN(O)].
UNHCR = United Nations High Commissioner for Refugees [ONU|OVN|UN(O)].
UNICEF = United Nations Children's Fund (formerly United Nations International Children's Emergency Fund) [ONU|OVN|UN(O)].
Unicode = Unicode Consortium unified text + symbols encoding standard.
UNICRI = United Nations Interregional Crime and Justice Research Institute [ONU|OVN|UN(O)].
UNIDIR = United Nations Institute for Disarmament Research [ONU|OVN|UN(O)].
UNIDO = United Nations Industrial Development Organization [ONU|OVN|UN(O)].
UNITAR = United Nations Institute for Training And Research [ONU|OVN|UN(O)].
UNIX = (Multi)User Network Operating System.
UNL = Universal Networking Language (computational linguistics).
UN(O) = United Nations (Organization), also ONU, also OVN (intergovernmental organization for international cooperation, dignity, equality, equity, health, peace, rights, security with over 190 members countries/nations/sovereignties/states/territories).
UNOCHA = United Nations Office for the Coordination of Humanitarian Affairs [ONU|OVN|UN(O)].
UNODA = United Nations Office for Disarmament Affairs [ONU|OVN|UN(O)].
UNODC = United Nations Office on Drugs and Crime [ONU|OVN|UN(O)].
UNOOSA = United Nations Office for Outer Space Affairs [ONU|OVN|UN(O)].
UNOPS = United Nations Office for Project Services [ONU|OVN|UN(O)].
UNRISD = United Nations Research Institute For Social Development [ONU|OVN|UN(O)].
UNRWA = United Nations Relief and Works Agency [ONU|OVN|UN(O)].
UNSSC = United Nations System Staff College [ONU|OVN|UN(O)].
UNU = United Nations University [ONU|OVN|UN(O)].
UN WOMEN = United Nations Women [ONU|OVN|UN(O)].
UNWTO = United Nations World Tourism Organization [ONU|OVN|UN(O)].
UPC = Universal Product Code (scannable digital barcode global unique identifier symbology).
UPEACE = University for Peace [ONU|OVN|UN(O)].
UPF = Ultra Processed Foods (industrially formulated/mixed/synthesized edible products with artificial/synthetic additives/chemicals).
UPnP = Universal Plug and Play technology.
UPS = Uninterruptible Power Supply.
UPU = Universal Postal Union [ONU|OVN|UN(O)].
URAM = Universal Random Access Machine (computer science).
URAV = Unmanned Reconnaissance Aerial (Aircraft) Vehicle.
URC = Uniform Resource Characteristic (logical/physical WWW/Web resource globally unique persistent identifier) (W3C/IETF).
URI = Uniform Resource Identifier, also URL, also WWW/Web Address (logical/physical WWW/Web resource globally unique persistent identifier) (W3C/IETF).
URL = Uniform Resource Locator, also URI, also WWW/Web Address (logical/physical WWW/Web resource globally unique persistent identifier) (W3C/IETF).
URM = Universal Retention Mechanism (Slot 1 CPU).
URN = Uniform Resource Name (logical/physical WWW/Web resource globally unique persistent identifier) (W3C/IETF).
U.S.A. = United States of America, also USA.
USA = United States of America, also U.S.A..
USAV = Unmanned Surveillance Aerial (Aircraft) Vehicle.
USB = Universal Serial Bus technology standard (USB-IF).
USB 1.0 = Universal Serial Bus implementation 1.0, also USB1 1.5 MB/sec technology standard (USB-IF).
USB 1.1 = Universal Serial Bus implementation 1.1, also USB11 12 MB/sec technology standard (USB-IF).
USB 2.0 = Universal Serial Bus implementation 2.0, also USB2 480 MB/sec technology standard (USB-IF).
USB 3.0 = Universal Serial Bus implementation 3.0, also USB3 5 GB/sec technology standard (USB-IF).
USB 3.1 = Universal Serial Bus implementation 3.1, also USB31 10 GB/sec technology standard (USB-IF).
USB 3.2 = Universal Serial Bus implementation 3.2, also USB32 20 GB/sec technology standard (USB-IF).
USB 4.0 = Universal Serial Bus implementation 4.0, also USB4 40 GB/sec technology standard (requires USB-C + USB PD standards) (USB-IF).
USB 4.0 2.0 = Universal Serial Bus implementation 4.0 version 2.0, also USB4 2.0 80 GB/sec technology standard (requires USB-C + USB PD standards) (USB-IF).
USB1 = Universal Serial Bus implementation 1.0, also USB 1.0 1.5 MB/sec technology standard (USB-IF).
USB11 = Universal Serial Bus implementation 1.1, also USB 1.1 12 MB/sec technology standard (USB-IF).
USB2 = Universal Serial Bus implementation 2.0, also USB 2.0 480 MB/sec technology standard (USB-IF).
USB3 = Universal Serial Bus implementation 3.0, also USB 3.0 5 GB/sec technology standard (USB-IF).
USB31 = Universal Serial Bus implementation 3.1, also USB 3.1 10 GB/sec technology standard (USB-IF).
USB32 = Universal Serial Bus implementation 3.2, also USB 3.2 20 GB/sec technology standard (USB-IF).
USB4 = Universal Serial Bus implementation 4.0, also USB 4.0 40 GB/sec technology standard (requires USB-C + USB PD standards) (USB-IF).
USB4 2.0 = Universal Serial Bus implementation 4.0 version 2.0, also USB 4.0 2.0 80 GB/sec technology standard (requires USB-C + USB PD standards) (USB-IF).
USB-A = Universal Serial Bus connection interface type A system (USB-IF).
USB-B = Universal Serial Bus connection interface type B system (USB-IF).
USB-C = Universal Serial Bus connection interface type C system (USB-IF).
USB-IF = Universal Serial Bus Implementers Forum.
USB PD = Universal Serial Bus Power Delivery technology, also USB-PD for (re)charging electrical devices (USB-IF).
USB-PD = Universal Serial Bus Power Delivery technology, also USB PD for (re)charging electrical devices (USB-IF).
USB PlusPower = Universal Serial Bus electric power delivery technology standard, also PoweredUSB, also Retail USB, also USB +Power, also USB Power Plus (requires USB 4.0/newer, USB-C + USB PD standards) (USB-IF).
USB +Power = Universal Serial Bus electric power delivery technology standard, also PoweredUSB, also Retail USB, also USB PlusPower, also USB Power Plus (requires USB 4.0/newer, USB-C + USB PD standards) (USB-IF).
USB Power Plus = Universal Serial Bus electric power delivery technology standard, also PoweredUSB, also Retail USB, also USB PlusPower, also USB +Power (requires USB 4.0/newer, USB-C + USB PD standards) (USB-IF).
USENET = USEr NETwork (newsgroups).
USFF = Ultra Small Form Factor (motherboard form factor).
USR = US Robotics.
USRAV = Unmanned Surveillance and Reconnaissance Aerial (Aircraft) Vehicle.
UTC = Coordinated Universal Time (primary mean solar international time standard).
UTF = Universal Character Set (UCS) Transformation Format (variable length Unicode encoding standard).
UTF-8 = Universal Character Set (UCS) Transformation Format 8 bits/character (8-bit) (variable length Unicode encoding standard).
UTF-16 = Universal Character Set (UCS) Transformation Format 16 bits/character (16-bit) (variable length Unicode encoding standard).
UTF-32 = Universal Character Set (UCS) Transformation Format 32 bits/character (32-bit) (variable length Unicode encoding standard).
UUE = Uniform Resource Locator UNIX Encoded.
UUENCODE = UNIX to UNIX Encoding.
UUID = Universally Unique IDentifier unique 16-byte (128-bit) encrypted integer reference label (IEC/IETF/ISO/TOG software + hardware identification standard).
UUV = Unmanned (Uncrewed) Underwater (Undersea) Vehicle.
UVGA = Ultimate Video Graphics Array standard (1024x768 pixels, 768p).
UWB = UltraWideBand technologies (MBOA).
UWP = Universal Windows Platforms (Microsoft Windows 8/newer Metro/Tile/Store app and API).
UX = User eXperience design, also UED, also UX Design, also UXD, also XD.
UX Design = User eXperience Design, also UED, also UX, also UXD, also XD.
UXD = User eXperience Design, also UED, also UX, also UX Design, also XD.
UXGA = Ultra eXtended Graphics Array standard (1600x1200 pixels, 1200p), also UXVGA.
UXVGA = Ultra eXtended Video Graphics Array standard (1600x1200 pixels, 1200p), also UXGA.
 🔝 
V
V2B = Vehicle to Building (infrastructure transport + traffic management communication technologies).
V2C = Vehicle to Cloud (network/remote diagnostics transport + traffic management communication technologies).
V2D = Vehicle to Device (bluetooth/wireless transport + traffic management communication technologies).
V2G = Vehicle to Grid (smart grid transport + traffic management communication technologies).
V2H = Vehicle to Home (residential transport + traffic management communication technologies).
V2I = Vehicle to Infrastructure (transport + traffic management communication technologies).
V2L = Vehicle to Load (transport + traffic management communication technologies).
V2N = Vehicle to Network (cellular/mobile wireless transport + traffic management communication technologies).
V2P = Vehicle to Pedestrian (VRU transport + traffic management communication technologies).
V2V = Vehicle to Vehicle (real time transport + traffic management communication technologies).
V2X = Vehicle to Everything (transport + traffic management communication technologies).
V.90 = PCM 56 Kb/sec analog modem transfer technology (ITU).
V.92 = PCM 56 Kb/sec analog modem transfer technology (ITU).
VANET = Vehicular Ad Hoc Network (real time communication).
VAR = Value Added Reseller.
VAT = Virtual Allocation Table (Compact Disc).
Vax = Vaccine or Vaccination, also vaxx.
Vaxx = Vaccine or Vaccination, also vax.
VBE = VESA BIOS Extensions.
VBI = Vertical Blanking Interval.
VC = Vibration Compensation (Tamron photo/video equipment image/optical stabilization technology).
VCD = Video Compact Disc (MPEG-1 encoding).
VCM = Virtual Channel Memory.
VCP = Video Cassette Player.
VCPI = Virtual Control Program Interface.
VCR = Video Cassette Recorder.
VCS = Vehicular Communication System (transport + traffic management computer networking).
VDS = Virtual Dedicated Server (virtual machine + built-in operating system as dedicated internet/online hosting extension/service).
VDSL = Variable Digital Subscriber Line modem technology.
VESA = Video Electronics Standards Association.
VFAT = Virtual File Allocation Table (Microsoft Windows).
VFD = Vacuum Fluorescent Display.
VFIR = Very Fast InfraRed protocol (Hewlett Packard).
VfW = Video for Windows.
VFX = Visual (special) effect(s) (visual arts, computing).
VGA = Video Graphics Array standard (640x480 pixels, 480p).
VHD = Virtual Hard Disk file type + format, 2 TB capacity limit (Connectix).
VHDX = Virtual Hard Disk eXtended v2 file type + format, 64 TB capacity limit (Microsoft).
VHD (2) = Very High Density printer interface (Centronics).
VHF = Very High Frequency (meter band) radio wave bands 30-300 MHz (ITU).
VHS = Video Home System (analog casette tape audio + video recording/playback standard).
VHTR = Very High Temperature cooled Reactor (nuclear fission electrical energy power generator).
VIBGYOR = Violet Indigo Blue Green Yellow Orange Red, also ROYGBIV [7 primary colors (hues) constituting visible white light spectrum (prism/rainbow optical dispersion) emitted by some stars, like our sun].
Vidcast = Spontaneous/scripted live/recorded online/shared digital audio/video educational/informative course/documentary/event/film/presentation/program.
VIF = Versatile Image File type + format (.VIF) based on H.266/VVC video compression standard (Fraunhofer/ITU/ISO/MPEG).
VIRGO = Variability of Solar Irradiance and Gravity Oscillations (astronomical observational instrument) (NASA/ESA/JAXA).
Visible Web = Publicly accessible indexable (indexed) internet (see also Clearnet, Lightnet, Surface Web).
VIVO = Video In Video Out.
VIS = Visual Image Size.
VLA = Very Large Array (astronomical observatory complex) (NRAO).
VLAN = Virtual Local Area Network (data link layer isolated broadcast domain).
VLBA = Very Long Baseline Array (network of astronomical observatory complexes) (NRAO).
VLB = VESA Local Bus (VL bus).
VLC = Visible Light Communication (optical wireless technologies).
VLEO = Very Low Earth Orbit (astronomy).
VLF = Very Low Frequency (myriameter band) radio wave bands 3-30 KHz (ITU).
VLIW = Very Long Instruction Word (parallel computing).
VLM = Very Large Memory addressing (Intel Merced).
VLSI = Very Large Scale Integration (integrated circuit).
VLSM = Variable Length Subnet masking (network prefixing design).
VLT = Very Large Telescope (astronomical observatory complex) (ESO).
VMDK = Virtual Machine DisK file type + format, 62 TB capacity limit (VMware).
VMM = Virtual Memory Manager (Microsoft Windows).
VMM (2) = Virtual Machine Monitor.
VOBSUB = VOB [BitMaP (BMP) image based] CD/BD/DVD/UHD video SUBtitles file types + formats (.SUB) + (.IDX).
VoD = Video on Demand (multimedia distribution service).
VoIP = Voice over Internet Protocol.
VotD = Video of the Day.
VOX = Voice Operated (switch) eXchange (simplex radio/telephone telecommunications).
VP8 = Video codec format used by WebM + HTML5 (On2/Google).
VPC = Virtual Private Cloud (secure isolated NaaS connection hosted on public cloud).
VPG = Video Performance Guarantee (minimum guaranteed speed specification), CompactFlash (CF)/CFast profile specification standard.
VPN = Virtual Private Network [P2P shared/public secure (encrypted) internet/network/online service].
VPS = Virtual Private Server (virtual machine + built-in operating system as shared internet/online hosting extension/service).
VPU = Visual Processing Unit (3Dlabs P10 family 2D/3D video chipsets).
VR = Virtual Reality (computer generated digital interactive simulated reality environment/experience).
VR (2) = Voltage Regulator (CPU).
VR (3) = Vibration Reduction (Nikon photo/video equipment image/optical stabilization technology).
VRB = Vanadium Redox flow rechargeable/replaceable electric energy accumulator/Battery/cell.
VRE = Voltage Regulator Enhanced (MMX/SSE/KNI/3DNow! CPU dual voltage).
VRAM = Video Random Access Memory.
VRM = Voltage Regulator Module (CPU).
VRML = Virtual Reality Modeling (3D) Language.
VRMMO = Virtual Reality Massively Multiplayer Online game (multiplayer/single player gaming).
VRMMORP = Virtual Reality Massively Multiplayer Online Role Playing game, also VRMMORPG (multiplayer/single player gaming).
VRMMORPG = Virtual Reality Massively Multiplayer Online Role Playing Game, also VRMMORP (multiplayer/single player gaming).
VRU = Vulnerable Road User (non-motorist + pedestrian transportation system).
VSA = Voodoo Scalable Architecture (3dfx 2D/3D video chipset).
VSA-100 = Voodoo Scalable Architecture 100 (3dfx Napalm 2D/3D video chipset).
VSM = Virtual Storage Management (Microsoft Windows 32-bit).
V/STOL = Vertical and/or Short Take Off and Landing aircraft, vehicle.
VT = Vertical Tab control character sequence (text/ASCII/ANSI/EBCDIC/Unicode).
VT (2) = Virtualization Technology for abstracted hardware (Intel).
VT-d = Virtualization Technology for directed I/O (Intel).
VT-i = Virtualization Technology for IA-32 (i386) 32-bit CPU (Intel).
VT-x = Virtualization Technology for x86 32-bit + 64-bit CPU (Intel).
VTHL = Vertical Take off and Horizontal Landing spacecraft, vehicle.
VTOBAR = Vertical Take Off But (Barrier) Arrested Recovery aircraft, vehicle.
VTOCL = Vertical Take Off and Conventional Landing aircraft, spacecraft, vehicle.
VTOHL = Vertical Take Off and Horizontal Landing aircraft, spacecraft, vehicle.
VTOL = Vertical Take Off and Landing aircraft, vehicle.
VTOSL = Vertical Take Off and Short Landing aircraft, spacecraft, vehicle.
VTVL = Vertical Take off Vertical Landing spacecraft, vehicle.
VVC = Versatile Video Coding H.266/VVC video compression standard (Fraunhofer/ITU/ISO/MPEG) (also H.266 + X.266).
VXD = Virtual eXtended (everything) device Driver (Microsoft Windows 95/98/ME).
 🔝 
W
W3C = World Wide Web Consortium (universal internet standards).
WAIS = Wide Area Information Server.
WAN = Wide Area Network.
WANET = Wireless Ad Hoc Network (real time communication).
WAP = Wireless Access Point (computer networking).
WAR = Wide Aspect Ratio display (16:9 = cinema/TV letterbox format).
Wasm = WebAssembly (WWW portable executable binary code + text format, API + standard) (W3C).
WAV = WAVeform audio file type + format (.WAV) (Microsoft).
WAVE = Wireless Access in Vehicular Environments (ITS communication system) (IEEE).
WBAN = Wireless Body Area Network.
WBEM = Web Based Enterprise Management Initiative.
WBG = World Bank Group [ONU|OVN|UN(O)].
WCG = Wide Color Gamut sRGB/Adobe color space using pure spectral primary colors (hues) (Adobe).
WDF = Windows Driver Foundation 32-bit or 64-bit (Microsoft approved).
WDK = Windows Driver Kit (Microsoft device drivers computer programming).
WDM = Wavelength Division Multiplexing (optical communications).
WDM (2) = Windows Driver Model 32-bit or 64-bit (Microsoft approved).
WDR = Wide Dynamic Range (digital 3D/imaging/video quality enhancement).
Web 1.0 = WWW 1st evolutionary stage (interactive, personalized, published, scripted, static), also Web1.
Web 2.0 = WWW 2nd evolutionary stage (cultural, interchangeable, interoperable, participative, social), also Web2.
Web 3.0 = WWW 3rd evolutionary stage (customized, decentralized, interlinked, open, personalized), also Web3.
Web Address = WWW uniform resource identifier/locator, also URI, also URL (logical/physical WWW/Web resource globally unique persistent identifier) (W3C/IETF).
Web page = Hypertext document accessible on the World Wide Web (see also HTML).
Web site = Organized collection/repository of web pages, files + related content identified by a common domain name, published and hosted on web server(s), also website.
Web1 = WWW 1st evolutionary stage (interactive, personalized, published, scripted, static), also Web 1.0.
Web2 = WWW 2nd evolutionary stage (cultural, interchangeable, interoperable, participative, social), also Web 2.0.
Web3 = WWW 3rd evolutionary stage (customized, decentralized, interlinked, open, personalized), also Web 3.0.
Webcast = Spontaneous/scripted live/recorded posted/shared digital audio/data/video/written educational/informative course/documentary/event/film/presentation/program.
WebGL = Web based Graphics Library (Language) (Canvas HTML 3D video API).
Weblog = Web log educational, informational internet/online/WWW document/page/publication/site, also blog.
WebM = Web Multimedia VP8 video and Vorbis audio Matroska container format (On2/Google).
WebP = Web Picture lossy image format (On2/Google).
WebRTC = Web Real Time Communication (WWW P2P communication protocols) (W3C/IETF).
Website = Organized collection/repository of web pages, files + related content identified by a common domain name, published and hosted on web server(s), also web site.
WEP = Wired Equivalent Privacy (wireless network security encryption protocol) (Wi-Fi Alliance).
WET = Write Everything Twice (computer/device software development principle).
WFA = Wireless Fidelity (Wi-Fi) Alliance.
WFF = Wallops Flight Facility (NASA space facility, USA).
WFH = Work From Home.
WfM = Wired for Management.
WFP = World Food Program [ONU|OVN|UN(O)].
WfWG = Windows for WorkGroups 3.1x (Microsoft).
WGA = Windows Genuine Advantage (Microsoft mandatory validation).
WGO = WeltGesundheitsOrganisation, also OMS, also WHO [ONU|OVN|UN(O) agency responsible for international public health].
WHATWG = Web Hypertext Application Technology Working Group (Apple/Mozilla/Google/Microsoft/Opera).
WHIM = Warm Hot Intergalactic Medium (astronomy).
WHO = World Health Organization, also OMS, also WGO [ONU|OVN|UN(O) agency responsible for international public health].
WHQL = Windows Hardware Quality Labs (Microsoft approved).
Wi-Fi = Wireless Fidelity communication technology, also WiFi (IEEE).
Wi-Fi 0 = Wireless Fidelity 0 (symbolic) WLAN standard (Wi-Fi Alliance) 802.11 (IEEE), 1-2 Mb/sec.
Wi-Fi 1 = Wireless Fidelity 1 (symbolic) WLAN standard (Wi-Fi Alliance) 802.11b (IEEE), 1-11 Mb/sec.
Wi-Fi 2 = Wireless Fidelity 2 (symbolic) WLAN standard (Wi-Fi Alliance) 802.11a (IEEE), 6-54 Mb/sec.
Wi-Fi 3 = Wireless Fidelity 3 (symbolic) WLAN standard (Wi-Fi Alliance) 802.11g (IEEE), 6-54 Mb/sec.
Wi-Fi 4 = Wireless Fidelity 4 WLAN standard (Wi-Fi Alliance) 802.11n (IEEE), 72-600 Mb/sec.
Wi-Fi 5 = Wireless Fidelity 5 WLAN standard (Wi-Fi Alliance) 802.11ac (IEEE), 433-6933 Mb/sec.
Wi-Fi 6 = Wireless Fidelity 6 WLAN standard (Wi-Fi Alliance) 802.11ax (IEEE), 574-9608 Mb/sec.
Wi-Fi 6E = Wireless Fidelity 6 Extended WLAN standard (Wi-Fi Alliance) 802.11ax (IEEE), 574-9608 Mb/sec.
Wi-Fi 7 = Wireless Fidelity 7 WLAN standard (Wi-Fi Alliance) 802.11be (IEEE), 1376-46120 Mb/sec.
WiFi = Wireless Fidelity communication technology, also Wi-Fi (IEEE).
Wiki = Quick (Hawaiian) educational, informational internet/online/WWW HTML/hypertext database/document/page/publication/site.
WiMAX = Broadband Wireless Access technologies (Intel).
Win10 = Windows 10 (Microsoft).
Win11 = Windows 11 (Microsoft).
Win16 = Windows 16-bit OS API code (Microsoft).
Win2000 = Windows Server 2000 (formerly NT 5.0) (Microsoft).
Win2003 = Windows Server 2003 (Microsoft).
Win2008 = Windows Server 2008 (Microsoft).
Win2008 R2 = Windows Server 2008 Release 2 (Microsoft).
Win2012 = Windows Server 2012 (Microsoft).
Win2012 R2 = Windows Server 2012 Release 2 (Microsoft).
Win2016 = Windows Server 2016 (Microsoft).
Win2019 = Windows Server 2019 (Microsoft).
Win2022 = Windows Server 2022 (Microsoft).
Win2K = Windows Server 2000 (formerly NT 5.0) (Microsoft).
Win2K12 = Windows Server 2012 (Microsoft).
Win2K12 R2 = Windows Server 2012 Release 2 (Microsoft).
Win2K16 = Windows Server 2016 (Microsoft).
Win2K19 = Windows Server 2019 (Microsoft).
Win2K22 = Windows Server 2022 (Microsoft).
Win2K3 = Windows Server 2003 (Microsoft).
Win2K8 = Windows Server 2008 (Microsoft).
Win2K8 R2 = Windows Server 2008 Release 2 (Microsoft).
Win31 = Windows/WfWG 3.1x (Microsoft).
Win32 = Windows 32-bit OS API code (Microsoft).
Win32s = Windows 32-bit extensions for Windows/WfWG 3.1x 16-bit (Microsoft).
Win3x = Windows/WfWG 3.xx (Microsoft).
Win64 = Windows 64-bit OS API code (Microsoft).
Win7 = Windows 7 (Microsoft).
Win8 = Windows 8 (Microsoft).
Win8.1 = Windows 8.1 (Microsoft).
Win95 = Windows 95/95a OSR1/95B OSR 2.0/95B OSR 2.1/95C OSR 2.5 (Microsoft).
Win98 = Windows 98/98 SP1/98 SE(U) (Microsoft).
Win9x = Windows 95/95a OSR1/95B OSR 2.0/95B OSR 2.1/95C OSR 2.5/98/98 SP1/98 SE(U)/ME (Microsoft).
Windows = Computers/devices proprietary Operating Systems (OSes) (Microsoft).
WinFS = Windows Future Storage 32-bit file layer (Windows Vista/newer) (Microsoft).
WinFX = Windows 32-bit/64-bit OS managed API code (Windows Vista/newer) (Microsoft).
WinME = Windows ME (Millennium Edition) (Microsoft).
WinNT = Windows NT (New Technology) 3.xx family + 4.0 OSes (Microsoft).
WinNT10 = Windows NT (New Technology) 10.0 family OSes: 10, 2016, 2019, 11, 2022 (Microsoft).
WinNT10x = Windows NT (New Technology) 10.x family OSes: 10, 2016, 2019, 11, 2022 (Microsoft).
WinNT3 = Windows NT (New Technology) 3.xx family OSes (Microsoft).
WinNT4 = Windows NT (New Technology) 4.0 OS (Microsoft).
WinNT5 = Windows Server 2000 (Microsoft).
WinNT6 = Windows NT (New Technology) 6.0 family OSes: Vista, 2008, 7, 2008 R2, 8, 2012, 8.1 + 2012 R2 (Microsoft).
WinNT6x = Windows NT (New Technology) 6.x family OSes: Vista, 2008, 7, 2008 R2, 8, 2012, 8.1 + 2012 R2 (Microsoft).
WinNTx = Windows NT (New Technology) version x families OSes: NT + newer (Microsoft).
WinOSR1 = Windows 95a OSR1 (Microsoft).
WinOSR2 = Windows 95B OSR 2.0/95B OSR 2.1/95C OSR 2.5 (Microsoft).
WINS = Windows Internet Name Service protocol (Microsoft).
Winsock = Windows Sockets Application Programming Interface (API) (networking) (Microsoft).
WinVista = Windows Vista (Microsoft).
WinXP = Windows XP (eXPerience) (Microsoft).
WIPO = World Intellectual Property Organization [ONU|OVN|UN(O)].
WIPS = Wireless based Intrusion Prevention Systems (wireless security monitoring).
WIR = Weak InfraRed, also LWIR band/spectrum (invisible electromagnetic thermal radiation).
WirelessHART = Wireless Highway Addressable Remote Transducer Protocol (transport + traffic management sensor networking technology).
WLAN = Wireless (Wi-Fi) Local Area Network.
WMAN = Wireless (Wi-Fi) Metropolitan Area Network.
WMF = Windows MetaFile file type + format (.WMF) (Microsoft).
WMO = World Meteorological Organization [ONU|OVN|UN(O)].
WMV = Windows Media Video (Microsoft).
WMV HD = Windows Media Video High Definition (Microsoft).
WNS = Wireless Network Security (Wi-Fi networks).
WNS (2) = Wireless Network Systems (Wi-Fi networks).
WOFF = Web Open Font Format W3C standard (Microsoft/Opera/Mozilla).
WORA = Write Once Run Anywhere (Sun Java).
WORE = Write Once Run Everywhere (Sun Java).
World Wide Web = Networked system of data and information accessible over the internet organized as Web Sites (see WWW).
WORM = Write Once Read Many [CD-R(W)/DVD-R(W)/BD-R(W)/HDD/SSD/NVMe/nonvolatile memory mass storage media].
WOSA = Windows Open Services Architecture (Microsoft).
WOSSA = Windows Operating Systems and Services Architecture (Microsoft).
WoW64 = Windows 32-bit (x86) on Windows 64-bit (x64) compatibility layer subsystem (Microsoft Windows 64-bit OSes).
WPA = Wi-Fi (Wireless) Protected Access (wireless network security encryption protocol) (Wi-Fi Alliance).
WPA (2) = Windows Product Activation (Microsoft EULA enforcement policy).
WPA2 = Wi-Fi (Wireless) Protected Access 2 (wireless network security encryption protocol) (Wi-Fi Alliance).
WPA3 = Wi-Fi (Wireless) Protected Access 3 (wireless network security encryption protocol) (Wi-Fi Alliance).
WPAD = Web Proxy Auto Discovery Protocol (DHCP/DNS).
WPAN = Wireless (Wi-Fi) Personal Area Network.
WPA-Enterprise = Wi-Fi (Wireless) Protected Access Enterprise (wireless network security encryption protocol) (Wi-Fi Alliance).
WPA-Personal = Wi-Fi (Wireless) Protected Access Personal, also WPA-PSK (wireless network security encryption protocol) (Wi-Fi Alliance).
WPA-PSK = Wi-Fi (Wireless) Protected Access Pre-Shared Key, also WPA-Personal (wireless network security encryption protocol) (Wi-Fi Alliance).
WPC = Wide area Private Cloud (secure isolated NaaS connection hosted on public cloud subnets).
WPE = Windows Protection Error (Microsoft Windows).
WPG = WordPerfect Graphic file.
WPS = Wi-Fi (Wireless) Protected Setup, also WSC (Cisco).
WQHD = Wide Quad High Definition screen resolution standard (3120x1440 pixels, 1440p).
WQUXGA = Wide Quad Ultra eXtended Graphics Array standard (3840x2400 pixels, 2400p), also WQUXVGA.
WQUXVGA = Wide Quad Ultra eXtended Graphics Array standard (3840x2400 pixels, 2400p), also WQUXGA.
WQXGA = Wide Quad eXtended Graphics Array standard (2560x1600, 1600p).
WRAM = Windows Random Access Memory.
WS = WebSocket full duplex computer communications protocol standard (ws:) (WHATWG).
WS-Discovery = Web Services Discovery network protocol (OASIS).
WSA = Windows Sockets (Winsock) API (communication interface between client and TCP/IP stack).
WSC = Wi-Fi (Wireless) Simple Config, also WPS (Cisco).
WSDL = Web Services Description Language (XML based interface).
WSN = Wireless Specialty Network.
WSR = Weather Surveillance (Doppler) Radar.
WSS = WebSocket Secure full duplex computer communications protocol standard (wss:) (SSL + TLS technologies) (WHATWG).
WSTF = White Sands Test Facility (NASA space tests facility, USA).
WSXGA = Wide Super Ultra eXtended Graphics Array standard (1440x900 pixels, 900p), also Wide XGA+.
WSXGA+ = Wide Super eXtended Graphics Array Plus standard (1680x1050 pixels, 1050p), also Wide XGA+.
WTO = World Trade Organization [ONU|OVN|UN(O)].
WTX = Workstation Advanced Technology EXtended (motherboard form factor).
WU = Windows Update [Microsoft Windows OS + software (hot)fix/patch/repair/update/upgrade services].
WUXGA = Wide Ultra eXtended Graphics Array standard (1920x1200 pixels, 1200p), also WUXVGA.
WUXVGA = Wide Ultra eXtended Video Graphics Array standard (1920x1200 pixels, 1200p), also WUXGA.
WWAN = Wireless (Wi-Fi) Wide Area Network.
WWIF = World Wide InterFace.
WWW = World Wide Web.
WXGA = Wide eXtended Graphics Array standard (1366x768 pixels, 768p), also Wide XGA.
WYSIWYG = What You See Is What You Get.
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X
X.264 = X.264/AVC open source video compression based on H.264/AVC video compression standard (also AVC + H.264).
X.265 = X.265/HEVC open source video compression based on H.265/HEVC video compression standard (also H.265 + HEVC).
X.266 = X.266/VVC open source video compression based on H.266/VVC video compression standard (also H.266 + VVC).
x2 = 3COM/US Robotics 56 kb/sec analog modem transfer technology.
X3D = EXtensible 3D (W3C).
x64 = Intel 64-bit (x64) processors, also AMD64, also Intel 64, also x86-64 (64-bit compatible CPU + instructions set).
x86 = Intel 32-bit (x86) processors, also 80X86, also 86 (32-bit compatible CPU + instructions set).
x86-64 = Intel 64-bit (x64) processors, also AMD64, also Intel 64, also x64 (64-bit compatible CPU + instructions set).
X87 = Intel 32-bit (x86) X87 FPU mathematical coprocessor, also 80X87, also 87 (32-bit compatible CPU + instructions set).
XaaS = Everything as a Service, also EaaS [on demand via local thin client (bare bones operating system) + remote central host (internet cloud server)].
XAML = EXtensible Application Markup Language based on XML (Microsoft Windows).
XAND = Exclusive NOR (NOT +/- NOT OR) digital logic gate, also ENOR, also EXNOR, also NXOR, also XNOR (nonvolatile memory) (electronics).
XBL = XML Binding Language (Mozilla/W3C).
XBONG = X-ray Bright Optically Normal Galaxy (astronomy).
XD = User eXperience Design, also UED, also UX, also UX Design, also UXD.
XDR-SDRAM = Xtreme Data Rate Synchronous Dynamic Random Access Memory (Rambus).
Xeon = Intel Pentium II/III/IV Xeon CPU (80686).
X-Fi = Xtreme Fidelity audio technology (Creative Labs).
XGA = EXtended Graphics Array standard (1024x768 pixels, 768p), also XVGA.
XHR = XMLHttpRequest (JavaScript HTTP broadcast request method).
XHTML = EXtensible Hypertext Markup Language (W3C).
XHTML 1.1 = EXtensible HyperText Markup Language 1.1 standard (W3C).
XHTML5 = EXtensible HyperText Markup Language 5.0 standard (W3C).
XLL = EXtensible Link Language (W3C).
XML = EXtensible Markup Language (W3C).
XMM = EXtended Memory Manager.
XMP = EXtensible Metadata Platform digital metadata standard (Adobe/ISO).
XMPP = EXtensible Messaging and Presence Protocol (IETF).
XMS = EXtended Memory Specifications (Microsoft/Intel/Lotus/AST).
XNOR = Exclusive NOR (NOT +/- NOT OR) digital logic gate, also ENOR, also EXNOR, also NXOR, also XAND (nonvolatile memory) (electronics).
XOR = Exclusive OR, also EOR, also EXOR (nonvolatile memory) (electronics).
XP = Windows XP (eXPerience) (Microsoft).
XPDR = Transmitter Responder, also TP, also TPDR, also Transponder, also XPNDR (radio locator device).
XPNDR = Transmitter Responder, also TP, also TPDR, also Transponder, also XPDR (radio locator device).
XPS = XML Paper Specification (Microsoft).
XQD = EXperimental Quality Determination PCIe nonvolatile memory mass storage removable media cards standard 1-5 Gb/sec, > 2 TB (Sony).
XQD 2.0 = EXperimental Quality Determination 2.0 PCIe 3.0 nonvolatile memory mass storage removable media cards standard 8 Gb/sec, > 2 TB (Sony).
XR = EXtended Reality (combination of augmented reality, mixed reality + virtual reality).
XRDS = EXtensible Resource Descriptor Sequence (OASIS).
XSL = EXtensible Stylesheet Language (W3C).
XSLT = EXtensible Stylesheet Language Transformations (W3C).
XSRF = Cross Site Request Forgery, also CSRF (1 click malicious HTTP 3rd party/external/federated/outsourced attack, exploit, request, session riding method).
XSS = Cross Site Scripting (1 click malicious HTTP 3rd party/external/federated/outsourced attack, exploit, request, session riding method).
XT = EXtended Technology (motherboard form factor).
XUL = EXtensible User Interface Language based on XML (Mozilla/W3C).
XVGA = EXtended Video Graphics Array standard (1024x768 pixels, 768p), also XGA.
XVS = EXternal Vision System (airborne/avionics).
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Y
Y2K = Year 2000.
Y2K1 = Year 2001.
Y2K2 = Year 2002.
Y2K3 = Year 2003.
Y2K4 = Year 2004.
Y2K5 = Year 2005.
Y2K6 = Year 2006.
Y2K7 = Year 2007.
Y2K8 = Year 2008.
Y2K9 = Year 2009.
YT = YouTube (Google).
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Z
ZAK = Zero Administration Kit for Windows NT workstations (Microsoft).
ZAMS = Zero Age Main Sequence (astronomy).
ZAW = Zero Administration initiative for Windows.
ZBRFB = Zinc [Zn] BRomine (BRomium) [Br] hybrid Flow rechargeable/replaceable electric energy accumulator/Battery/cell.
ZBT = Zero Bus Turnaround.
Z-buffer = Third (3rd) dimension/depth/z axis memory (3D imaging/motion/photo/video).
ZCLV = Zone Constant Linear Velocity (Compact Disc).
ZEL = ZEro Length launch aircraft, spacecraft, vehicle, also ZELL, also ZLL.
ZELL = ZEro Length Launch aircraft, spacecraft, vehicle, also ZEL, also ZLL.
Zero-G = Zero (0) Gravity force [(near) zero (0)/complete absence of apparent weight, weightlessness].
Zeroconf = Zero configuration networking technologies based on TCP/IP protocols.
ZFS = Zettabyte File System 128-bit file system technology (Sun).
ZIF = Zero Insertion Force (CPU socket).
ZIP = Zig-zag In-line Package (integrated circuit packaging method).
ZIP (2) = ZIPped (lossless data compressed archive) file type + format (.ZIP) (PKWare).
ZLL = Zero Length Launch aircraft, spacecraft, vehicle, also ZEL, also ZELL.
ZLTO = Zero Length Take Off aircraft, spacecraft, vehicle.
Zn-Ce = Zinc [Zn] Cerium hybrid flow rechargeable/replaceable electric energy accumulator/battery/cell.
ZTA = Zero Trust Architecture security model (computer security + cryptography authentication).
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Glossaria, Dictionaria, Encyclopædia, Compendia, Referentia, Repositoria, Thesauria
    
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