Complicated

Acronym	Meaning
3WHS	three-way handshake
8VSB	8-state vestigial side band modulation
A1C	airman first class
A2ATD	anti-armour advanced technology demonstration
A2C2	army airspace command and control
AA	anti-aliasing
AAA	authentication, authorization, [and] accounting
AAT	average access time
ABI	application binary interface
ABR	available bit rate
AC	alternating current
ACI	adjacent channel interferer
ACID	atomicity, consistency, isolation, durability
ACK	Amsterdam compiler kit
ACK	acknowledgement
ACL	access control list
ACL	active current loop
ACP	auxillary control {process,program}
ACPI	advanced configuration and power interface
ACS	access control set
ACU	automatic calling unit
ADB	Apple desktop bus
ADC	analog [to] digital converter
ADD	acronym driven development
ADO	active data objects
ADP	automatic data processing
ADPCM	adaptive differential pulse code modulation
ADS	alternate data stream
ADSL	asymmetric digital subscriber line
ADT	abstract data type
AES	Advanced Encryption Standard
AFS	Andrew File System
AGC	automatic gain control
AGP	accelerated graphics port
AI	analog input
AI	artificial intelligence
AL	access list
AL	active link
ALE	address latch enable
ALS	ambient light sensor
ALU	arithmetic and logical unit
AM	access method
AM	alignment mask
AM	amplitude modulation
AMI	alternate mark inversion
AMQP	advanced message queuing protocol
AMT	active management technology
AN	Arabic number
ANSI	American National Standards Institute
AO	analog output
AOL	Alert-on-LAN
AOS	add or subtract
AP	access point
AP	application processor
API	application programming interface
APIC	advanced programmable interrupt controller
APIPA	automatic private IP addressing
APT	advanced persistent threat
AQM	active queue management
ARAT	always running APIC timer
ARC	adaptive replacement cache
ARM	Advanced RISC Machines
ARP	Address Resolution Protocol
ARPA	Advanced Research Projects Agency
ARQ	automatic repeat request
ARR	address range register
ARU	audio response unit
AS	autonomous system
ASC	advanced smart cache
ASCII	American Standard Code for Information Interchange
ASD	agile software development
ASE	advanced software environment
ASEAN	association of southeast asian nations
ASIC	application-specific integrated circuit
ASIC	australian securities and investments commission
ASIC	aviation security identification card
ASICS	anima sana in corpore sano (Latin, "A sound mind in a sound body")
ASK	amplitude shif keying
ASLR	address space layout randomization
ASN	autonomous system number
ASP	active server pages
ASPM	active state power management
ASQ	automated software quality
ASR	address space register
AST	abstract syntax tree
AST	asynchronous trap
AT	access time
AT	advanced technology
ATA	advanced technology attachment
ATAPI	advanced technology attachment packet interface
ATC	address translation cache
ATM	asynchronous transfer mode
ATX	advanced technology extended
AV	anti virus
AVL	Adelson-Velsky-Landis
AVX	advanced vector extensions
BA	byte align
BAL	basic assembly language
BAR	base address register
BBS	bulletin board system
BCC	blind carbon copy
BCD	binary coded decimal
BCR	byte count register
BCS	base configuration space
BD	baud
BDD	binary decision diagram
BDI	bit deinterleave
BDUF	big design up front
BEDO	burst extended data output
BER	basic encoding rules
BER	bit error {rate,ratio}
BFD	binary {file,format} descriptor
BFKL	big fscking kernel lock
BFS	breadth-first search
BFT	binary file transfer
BGA	ball grid array
BGP	Border Gateway Protocol
BIND	Berkeley Internet Name Daemon
BIOS	Basic Input/Output System
BIOS	built-in operating system
BIST	built-in self-test
BIU	bus interface unit
BKDG	BIOS and kernel developer's guide
BLAS	basic linear algebra subprograms
BLC	back light control
BLOB	binary large object
BM	bus master
BMC	baseboard management controller
BMIC	bus master interface controller
BN	boundary neutral
BNF	Backus-Naur form
BO	binary output
BOF	beginning of file
BOM	beginning of message
BOM	byte order mark
BP	base pointer
BP	boot processor
BPB	BIOS parameter block
BPF	Berkeley Packet Filter
BPI	bits per inch
BPM	business process modelling
BPS	bits per second
BPSK	binary phase shift keying
BQS	Berkeley quality software
BRE	basic regular expression
BS	backspace
BS	binary sequence
BSA	basic service area
BSD	Berkeley Software Distribution
BSF	bit scan forward
BSOD	blue screen of death
BSP	binary space partition
BSP	bootstrap processor
BSR	bit scan reverse
BSS	basic service set
BSS	block started by symbol
BSSID	basic service set identifier
BT	BitTorrent
BT	Bluetooth
BT	bit test
BTC	bit test [and] complement
BTR	bit test [and] reset
BTS	bit test [and] set
BTS	bits per second
BW	bandwidth
BWM	block-write mode
CA	certificate authority
CAD	computer-aided design
CAM	computer assisted manufacturing
CAM	conditional access module
CAM	content addressable memory
CARP	Common Address Redundancy Protocol
CAS	column address strobe
CAS	compare and swap
CAS	computer algebra system
CASE	computer aided software engineering
CAU	control access unit
CAV	constant angular velocity
CBC	cipher block chaining
CBR	constant bit rate
CC	carbon coby
CCD	charge coupled device
CCI	co-channel interferer
CD	cache disable
CD	compact disc
CDDA	compact disc digital audio
CDMA	code division multiple access
CDRAM	cache dynamic random access memory
CER	canonical encoding rules
CF	compact flash
CFG	context-free grammar
CFG	control-flow graph
CG	control gate
CGA	Color Graphics Adapter
CGI	common gateway interface
CGN	Carrier-Grade NAT
CHAP	Challenge-Handshake Authentication Protocol
CHS	cylinder/head/sector
CI	continuous integration
CI	{common,component} interface
CIDR	Classless Inter-Domain Routing
CIFS	Common Internet File System
CIL	common intermediate language
CIR	carrier-to-interference ratio
CIS	contact image sensor
CISC	complex instruction set {computer,computing}
CJK	Chinese, Japanese, [and] Korean
CLF	common log format
CLI	command line interface
CLR	common language runtime
CLTT	closed loop thermal throttling
CLUT	color look-up table
CLV	constant linear velocity
CM	configuration management
CMA	concert multithread architecture
CMI	control management interface
CMI	control method interface
CMOS	complementary metal-oxide-semiconductor
CMP	chip multi-processing
CMS	content management system
CMYK	cyan magenta yellow black
CN	{common,canonical} name
CNC	computer numerical control
CNR	carrier-to-noise ratio
COF	current operating frequency
COFDM	coded orthogonal frequency division multiplexing
COFF	common object file format
COM	component object model
COMA	cache-only memory architecture
CORBA	common object request broker architecture
COW	copy-on-write
CP	continuous pilot
CPB	core performance boost
CPE	common phase error
CPG	clock pulse generator
CPL	current privilege level
CPLD	complex programmable logic device
CPP	C preprocessor
CPS	characters per second
CPT	command pass through
CPU	central processing unit
CR	carriage return
CRC	cyclic redundancy check
CRL	carrier recovery loop
CRLF	carriage return line feed
CRT	cathode ray tube
CS	cable select
CS	chip select
CS	code segment
CS	computer science
CSI	channel state information
CSI	common system interface
CSMA	carrier sense multiple access
CSMA/CA	carrier sense multiple access with collision avoidance
CSMA/CD	carrier sense multiple access with collision detection
CSR	control [and] status registers
CSRG	Computer Systems Research Group
CSS	cascading style sheets
CSV	comma-separated values
CTM	close to metal
CTS	clear to send
CUA	common user access
CUT	coordinated universal time
CV	control voltage
CVS	Concurrent Versions System
DA	destination address
DAA	distributed application architecture
DAB	digital audio broadcasting
DAC	digital [to] analog converter
DAC	discretionary access control
DAD	duplicate address detection
DAO	disk at once
DAP	Directory Access Protocol
DAT	digital audio tape
DAT	dynamic acceleration technology
DB	database
DBA	database administrator
DBA	dynamic bandwidth allocation
DBB	data bus buffer
DBC	design by contract
DBL	dynamic buffer limiting
DBMS	database management system
DBS	database server
DC	direct current
DCC	Direct Client-to-Client
DCC	direct cable connect
DCD	data carrier detect
DCE	data control equipment
DCE	distributed computing environment
DCOM	distributed component object model
DCOP	Desktop COmmunication Protocol
DCS	data collection systems
DCT	discrete cosine transform
DCU	data cache unit
DDC	display data channel
DDE	dynamic data exchange
DDK	device driver kit
DDL	data description language
DDR	double data rate
DDS	direct digital sound
DDWG	Digital Display Working Group
DE	debugging extensions
DE	desktop environment
DEA	data encryption algorithm
DEK	data encryption key
DEP	data execution prevention
DER	distinguished encoding rules
DES	Data Encryption Standard
DF	don't fragment
DFA	deterministic finite automaton
DFC	data flow control
DFS	depth first search
DFS	distributed file system
DFT	diagnostic function test
DFT	discrete Fourier transform
DGL	data generation language
DH	Diffie-Hellman
DHCP	Dynamic Host Configuration Protocol
DIFS	distributed inter-frame space
DIMM	dual inline memory module
DIRT	design in real time
DL	diode logic
DL	discrete logarithm
DL	download
DLE	data link escape
DLL	dynamic link library
DLP	discrete logarithm problem
DMA	direct memory access
DMI	desktop management interface
DMS	document management system
DMT	discrete multitone modulation
DNARD	Digital network appliance reference design
DND	drag and drop
DNS	Domain Name System
DOE	distributed object environment
DOF	data over fibre
DOM	document object model
DOS	denial of service
DOS	disk operating system
DP	DisplayPort
DPC	deferred procedure call
DPCM	differential pulse code modulation
DPD	dead peer detection
DPI	deep packet inspection
DPI	dots per inch
DPL	descriptor privilege level
DPS	Display PostScript
DPST	display power savings technology
DRAM	dynamic random access memory
DRI	direct rendering infrastructure
DRM	digital rights management
DRRS	display refresh rate switching
DS	debug store
DSA	digital signature algorithm
DSB	double-sideband modulation
DSDT	differentiated system descriptor table
DSL	digital subscriber line
DSL	domain specific language
DSLAM	digital subscriber line access multiplexer
DSN	delivery status notification
DSO	dynamic shared object
DSP	digital signal processor
DSSS	direct sequence spread spectrum
DTD	document type definition
DTE	data terminal equipment
DTE	dumb terminal emulator
DTL	diode-transistor logic
DTS	digital thermal sensor
DUT	device under test
DVB	digital video broadcasting
DVCS	distributed version control system
DVD	digital versatile disc
DVFS	dynamic voltage and frequency scaling
DVI	device independent
DVI	Digital Visual Interface
DVR	digital video recorder
E-XER	extended XML encoding rules
EABI	embedded-application binary interface
EAP	Extensible Authentication Protocol
EBR	extended boot record
EC	elliptical curve
ECC	error correction code
ECDL	elliptical curve discrete logarithm
ECDSA	elliptical curve digital signature algorithm
ECL	emitter-coupled logic
ECN	explicit congestion notification
ECP	enhanced capability port
ECS	enhanced chip set
ECS	extended configuration space
EDAT	enhanced dynamic acceleration technology
EDGE	explicit data graph execution
EDID	extended display identification data
EDO	extended data out
EDS	electronical data sheet
EEPROM	electrically erasable programmable read only memory
EFI	extensible firmware interface
EFL	emitter follower logic
EFM	eight to fourteen modulation
EGA	Enhanced Graphics Adapter
EGP	exterior gateway protocol
EH	extension header
EIDE	enchanced IDE
EISA	extended industry standard architecture
ELF	executable and linking format
ELS	entry level system
EMI	electro-magnetic interference
EMP	electro-magnetic pulse
EMR	electro-magnetic radiation
EOF	end of file
EOI	end of interrupt
EOL	end of line
EOT	end of transmission
EPIC	explicitly parallel instruction computing
EPP	enhanced parallel port
EPRML	extended partial response, maximum likelihood
EPROM	erasable programmable read only memory
ERD	emergency recovery disk
ERD	entity relationship diagram
ERE	extended regular expression
ESDRAM	enhanced synchronous dynamic random access memory
ESS	electronic switching system
ESS	extended service set
ESSID	extended service set identifier
EST	enhanced speedstep
ETL	extract, transform, load
EU	execution unit
EULA	end user license agreement
FAT	file allocation table
FBRAM	frame buffer random access memory
FCL	fiber channel loop
FCS	frame check sequence
FDC	floppy disk controller
FDD	floppy disk drive
FDDI	fiber distributed data interface
FDE	full disk encryption
FEA	finite element analysis
FEC	forward error correction
FET	field-effect transistor
FF	form feed
FFH	functional fixed hardware
FFI	foreign function interface
FFM	focus follows mouse
FFS	Fast File System
FFS	find first set
FFT	fast Fourier transform
FG	floating gate
FHSS	frequency hop spread spectrum
FID	frequency identifier
FIFO	first in, first out
FILO	first in, last out
FIR	fast infrared
FLOPS	floating [point] operations per second
FLOSS	free/libre/open source software
FM	frequency modulation
FMR	false match rate
FOSS	free/open source software
FPGA	field programmable gate array
FPM	fast page mode
FPR	floating point register
FPU	floating point unit
FQDN	fully qualified domain name
FRR	false rejection rate
FRU	field replaceable unit
FS	file system
FSB	front side bus
FSCK	file system check
FSF	Free Software Foundation
FSK	frequency shift keying
FSM	finite-state machine
FTA	fault tree analysis
FTL	flash translation layer
FTP	File Transfer Protocol
FTPS	File Transfer Protocol Secure
FUS	fast user switching
FWH	firmware hub
FWS	folding white space
GAL	generic array logic
GAS	generic address structure
GC	garbage collector
GCR	group-coded recording
GDT	global descriptor table
GEM	graphics environment manager
GEM	graphics execution manager
GENA	general event notification architecture
GHC	Glasgow Haskell compiler
GID	group identifier
GIF	graphics interchange format
GMCH	graphics and memory controller hub
GNU	GNU's Not Unix
GOT	global offset table
GPE	general purpose event
GPF	general protection fault
GPG	GNU Privacy Guard
GPL	[GNU] General Public License
GPR	general purpose register
GPS	generalized processor sharing
GPT	GUID partition table
GPU	graphics processing unit
GR	golden ratio
GRE	generic routing encapsulation
GSI	global system interrupt
GUI	graphical user interface
GUID	globally unique identifier
HA	high availability
HAL	hardware abstraction layer
HAT	hashed array tree
HBA	host bus adapter
HCF	halt and catch fire
HCI	host controller interface
HCI	human-computer interaction
HCL	hardware compatibility list
HDCP	High-bandwidth Digital Content Protection
HDD	hard disk drive
HDL	hardware description language
HDMI	High-Definition Multimedia Interface
HDTV	high-definition television
HF	high frequency
HFM	highest frequency mode
HID	human interface device
HLL	high-level language
HMA	high memory area
HMI	human-machine interface
HOOD	hierarchical object oriented design
HP	Hewlett-Packard
HPC	high performance computing
HPET	high precision event timer
HT	hyper-threading
HTC	hardware thermal control
HTCC	high temperature co-fired ceramic
HTML	HyperText Markup Language
HTT	hyper-threading technology
HTTP	Hypertext Transfer Protocol
HTTPS	Hypertext Transfer Protocol Secure
HVM	hardware virtual machine
HZ	Hertz
I2O	intelligent input/output
IA	information assurance
IANA	Internet Assigned Numbers Authority
IBC	iterated block cipher
IBM	International Business Machines
IBS	instruction based sampling
IBSS	independent basic service set
IC	integrated circuit
ICA	independent computer architecture
ICB	Internet Citizen's Band
ICE	in-circuit emulator
ICE	internal compiler error
ICH	I/O controller hub
ICMP	Internet Control Message Protocol
ICT	information and communications technology
ICW	initialization command word
IDA	Intel dynamic acceleration
IDCMP	Intuition direct communication message port
IDE	integrated development environment
IDE	integrated drive electronics
IDPS	intrusion detection [and] prevention system
IDRP	inter-domain routing protocol
IDS	intrusion detection system
IDT	interrupt descriptor table
IE	Internet Explorer
IEC	International Electrotechnical Commission
IEEE	Institute of Electrical and Electronics Engineers
IESG	Internet Engineering Steering Group
IETF	Internet Engineering Task Force
IF	intermediate frequency
IFCM	isochronous flow control mode
IFF	Interchange File Format
IGD	Internet gateway device
IGMP	Internet Group Management Protocol
IGP	interior gateway protocol
IHV	independent hardware vendor
IKE	Internet key exchange
ILM	internal loopback mode
ILOM	integrated lights-out management
ILP	instruction level parallelism
IM	instant messaging
IMAP	Internet Message Access Protocol
IMC	integrated memory controller
IMCR	interrupt mode configuration register
IMR	interrupt mask register
IMS	information management system
INCITS	InterNational Committee for Information Technology Standards
IO	input/output
IOCTL	input/output control
IOMMU	input/output memory management unit
IOT	Internet of Things
IP	Internet Protocol
IP	intellectual property
IPC	interprocess communication
IPE	integrated programming environment
IPI	interprocessor interrupt
IPNG	Internet Protocol, Next Generation
IPS	in-plane switching
IPS	intrusion prevention system
IPSEC	Internet Protocol Security
IRC	Internet Relay Chat
IRDA	infrared data association
IRQ	interrupt request
IRQL	interrupt request level
IRR	interrupt request register
IRTF	Internet Research Task Force
IS	information system
ISA	industry standard architecture
ISA	instruction set architecture
ISDN	integrated services digital network
ISI	inter-symbol interference
ISM	industrial, scientific, [and] medical
ISN	initial serial number
ISO	International Standards Organization
ISOC	Internet Society
ISP	Internet service provider
ISR	in-service register
ISR	interrupt service routine
IST	interrupt stack table
ISV	independent software vendor
IT	information technology
ITB	Intel Turbo Boost
IV	initialization vector
IVT	interrupt vector table
JBOD	just a bunch of disks
JFET	junction [gate] field-effect transistor
JIT	just in time
JPEG	Joint Photographic Experts Group
JRE	Java Runtime Environment
JTAG	joint test action group
KB	keyboard
KB	kilobyte
KBD	keyboard
KBD	kilobaud
KLOC	thousand lines of code
KMS	kernel-mode setting
KPI	kernel programming interface
KVA	kernel virtual address
KVM	kernel virtual machine
KVM	kernel virtual memory
KVM	keyboard, video, [and] mouse
LAMP	Linux Apache MySQL {Perl,PHP,Python}
LAN	local area network
LAPIC	local advanced programmable interrupt controller
LAR	load access rights
LBA	logical block addressing
LBS	location-based service
LCD	liquid crystal display
LCP	link control protocol
LDA	local delivery agent
LDAP	Lightweight Directory Access Protocol
LDR	light-dependent resistor
LDT	local descriptor table
LE	logical extent
LED	light emitting diode
LER	label edge router
LF	line feed
LF	low frequency
LFM	lowest frequency mode
LFN	long file names
LFO	low-frequency oscillation
LFS	log-structured file system
LFU	least frequently used
LHP	loop heat pipe
LIFO	last in, first out
LILO	LInux LOader
LILO	last in, last out
LINT	local interrupt
LIR	local Internet registry
LKM	{Linux,loadable} kernel module
LKML	Linux kernel mailing list
LL	load linked
LL/SC	load linked/store conditional
LLC	logical link control
LLDP	link layer discovery protocol
LLF	low level format
LLMNR	link-local multicast name resolution
LLVM	Low Level Virtual Machine
LM	long mode
LMM	link management mode
LNO	loop nest optimization
LOC	lines of code
LOM	lights-out management
LPC	low pin count
LPS	local positioning system
LRC	longitudinal redundancy check
LRM	left-to-right mark
LRO	left-to-right override
LRU	least recently used
LSB	Linux standards base
LSB	least significant {bit,byte}
LSI	large scale integration
LSL	load segment limit
LSN	Large Scale NAT
LSN	log sequence number
LSR	label switch router
LTCC	low temperature co-fired ceramic
LTO	link time optimization
LTR	left to right
LTR	load task register
LTR	letter(-sized paper)
LUN	logical unit number
LV	logical volume
LVM	logical volume management
LVT	local vector table
LWP	light-weight process
LZW	Lempel Ziv Welch
MAC	mandatory access control
MAC	medium access control
MAC	message authentication {check,code}
MADT	multiple APIC descriptor table
MB	megabyte
MBR	master boot record
MBS	megabits per second
MC	memory controller
MCA	machine check architecture
MCA	MicroChannel architecture
MCC	multiversion concurrency control
MCE	machine check exception
MCGA	Multi-Color Graphics Array
MCH	memory controller hub
MCM	multi-chip module
MCQ	memory controlled queue
MD	machine-dependent
MDA	mail delivery agent
MDA	Monochrome Display Adapter
MDRAM	multibank dynamic random access memory
MESI	modified, exclusive, shared, invalid
MFC	merge from current
MFC	Microsoft Foundation Classes
MFM	modified frequency modulation
MI	machine-independent
MIB	management information base
MIC	message integrity {check,code}
MID	mobile Internet device
MIDI	musical instrument digital interface
MIF	management information format
MIM	man in the middle
MIMD	multiple instruction, multiple data
MIME	Multipurpose Internet Mail Extensions
MIMO	multiple input multiple output
MIPS	million instructions per second
MISD	multiple instruction, single data
MIT	Massachusetts Institute of Technology
MITM	man in the middle
ML	machine language
ML	machine learning
ML	mailing list
ML	markup language
ML	maximum likelihood
MLC	multi-level cell
MLHP	micro loop heat pipe
MMIC	monolithic microwave integrated circuit
MMIO	memory mapped input/output
MMORPG	massive multiplayer online role playing game
MMU	memory management unit
MMX	matrix math extension
MMX	multimedia extension
MMX	multiple math extension
MO	magneto-optical
MOESI	modified, owned, exclusive, shared, invalid
MOF	maximum operating frequency
MOSFET	metal-oxide-semiconductor field-effect transistor
MOSI	modified, owned, shared, invalid
MP	multi-platform
MP	multiplayer
MP	{multiprocessing,multiprocessor}
MPEG	moving picture experts group
MPI	message passing interface
MPLS	Multiprotocol Label Switching
MPP	massively parallel processor
MPS	memory pool system
MPS	multiprocessor specification
MR	modem ready
MRU	most recently used
MS	Microsoft
MSB	most significant {bit,byte}
MSE	mean square error
MSF	minutes seconds frames
MSI	message signaled interrupt
MSI	modified, shared, invalid
MSN	microsoft network
MSR	machine state register
MSS	maximum segment size
MT	machine translation
MTA	mail transfer agent
MTBF	mean time between failures
MTP	media transfer protocol
MTRR	memory type range register
MTTF	mean time to failure
MTU	maximum transmission unit
MUA	mail user agent
MUD	multi-user domain
MVCC	multiversion concurrency control
MWE	module width encoding
MX	mail exchange
NACK	negative acknowledgement
NAN	not a number
NAPT	Network Address Port Translation
NAS	network attached storage
NAT	network address translation
NAV	network allocation vector
NC	numerical control
NCO	numerically-controlled oscillator
NCP	Network Control Protocol
NCQ	native command queuing
ND	neighbor discovery
NDFA	nondeterministic finite automaton
NE	numeric error
NFA	nondeterministic finite automaton
NFS	network file system
NIA	next instruction address
NIC	network information center
NIC	network interface card
NIDS	network intrusion detection system
NIP	network interface protocol
NIPS	network intrusion prevention system
NIS	network information service
NLS	native language support
NMI	non-maskable interrupt
NNTP	Network News Transfer Protocol
NOC	network operations center
NOP	no operation
NOS	network operating system
NP	nondeterministic polynomial time
NRZ	non-return to zero
NSA	National Security Agency
NTM	non-deterministic Turing machine
NTP	Network Time Protocol
NUMA	non-uniform memory access
NVRAM	non-volatile random access memory
NW	not write-through
NX	no execute
OAEP	optimal asymmetric encryption padding
OBO	off by one
OBOE	off by one error
OCL	object constraint language
OCR	optical character recognition
ODCM	on-demand clock modulation
ODT	on-die termination
OEM	original equipment manufacturer
OFDM	orthogonal frequency division multiplexing
OFET	organic field-effect transistor
OLAP	online analytical processing
OLE	object linking and embedding
OLTP	online transaction processing
ONFI	open nand flash interface
OO	OpenOffice
OO	object oriented
OOB	out of band
OOE	out of order execution
OOM	out of memory
OOO	OpenOffice.org
OOP	object oriented programming
OOPS	object oriented programming systems
OOSE	object oriented software engineering
OPM	operations per minute
OPS	operations per second
OQL	Object Query Language
ORB	object request broker
ORM	object-relational mapping
OS	operating system
OSD	open source definition
OSF	open software foundation
OSI	Open Source Initiative
OSI	open systems interconnection
OSPF	open shortest path first
OSPM	OS power management
OSS	open sound system
OSS	open source software
OSVW	operating system visible workarounds
OTP	one time password
OTP	open telecom platform
OU	organizational unit
OUI	organizationally unique identifier
OWL	Web Ontology Language
P2P	PCI to PCI
P2P	peer to peer
PA	phase accumulator
PA	physical address
PAC	phase-amplitude converter
PAE	physical address extension
PAL	phase alternating line
PAL	programmable array logic
PAM	pluggable authentication modules
PAM	pulse amplitude modulation
PAP	password authentication protocol
PAT	page attribute table
PAT	port address translation
PATA	parallel ATA
PAX	portable archive exchange
PBE	pending break encoding
PBE	programming by example
PC	personal computer
PC	program counter
PCB	printed circuit board
PCC	Portable C Compiler
PCD	page-level cache disable
PCE	performance-monitor counter enable
PCI	peripheral component interconnect
PCM	phase change memory
PCM	pulse code modulation
PCMCIA	Personal Computer Memory Card International Association
PCP	Port Control Protocol
PD	public domain
PDA	personal digital assistant
PDA	pushdown automaton
PDAG	propositional directed acyclic graph
PDB	power distribution board
PDF	portable document format
PDM	pulse-duration modulation
PDN	pull-down network
PDP	page {descriptor,directory} page
PDS	product data sheet
PDU	protocol data unit
PE	protection enable
PECI	platform environment control interface
PEP	protocol extension protocol
PER	packed encoding rules
PFS	perfect forward secrecy
PGAS	partitioned global address space
PGE	page global enable
PGP	Pretty Good Privacy
PHB	PCI host bridge
PHP	PHP: Hypertext Preprocessor
PIC	position independent code
PIC	programmable interrupt controller
PICNIC	problem in chair, not in computer
PID	process id
PIE	position independent executable
PIM	personal information manager
PIM	platform-independent model
PIO	programmed input/output
PIPT	physically indexed, physically tagged
PIQ	prefetch input queue
PIT	programmable interrupt timer
PIV	personal identity verification
PKCS	public-key cryptography standards
PKI	public key infrastructure
PLC	programmable logic controller
PLD	programmable logic device
PLL	phase locked loop
PLRU	pseudo LRU
PLTM	package level thermal management
PM	power management
PM	{phase,pulse} modulation
PME	power management event
PMI	platform management interrupt
PMIO	port-mapped input/output
PMT	photo-multiplier tube
PMU	power management unit
PNG	portable network graphics
PNP	plug and play
POE	power over ethernet
POF	probability of failure
POP	Post Office Protocol
POP	power on password
POSIX	Portable Operating System Interface [for Unix]
POST	power on self test
POTS	plain old telephone system
PP	pair programming
PPB	PCI [to] PCI bridge
PPC	PowerPC
PPI	pixels per inch
PPM	pages per minute
PPP	Point-to-Point Protocol
PPPOA	Point-to-Point Protocol over ATM
PPPOE	Point-to-Point Protocol over Ethernet
PPU	physics processing unit
PRBS	pseudo-random bit sequence
PRML	partial response, maximum likelihood
PRN	pseudo random {noise,number}
PRNG	pseudo random number generator
PROM	programmable read only memory
PSD	power spectral density
PSE	page size extensions
PSK	phase shift keying
PSK	pre-shared key
PSTN	public switched telephone network
PSW	program status word
PTE	page table entry
PTLA	pseudo top level aggregator
PTP	page table page
PTV	perceived target value
PU	processing unit
PUN	physical unit number
PV	physical volume
PVG	physical volume group
PVI	protected-mode virtual interrupt
PWM	pulse width modulation
PXE	preboot execution environment
QA	quality assurance
QAM	quadrature amplitude modulation
QAM	quality assurance management
QBE	query by example
QC	quality control
QDI	quasi delay insensitive
QOS	quality of service
R/O	read only
R/W	read/write
RA	receiver address
RA	remote assistance
RA	resource affinity
RA	router advertisement
RAD	rapid application development
RAID	redundant array of {independent,inexpensive} disks
RAM	random access memory
RAS	reliability, availability and serviceability
RAS	remote access service
RAS	restartable atomic sequence
RAS	row address strobe
RBF	radial basis function
RBT	red-black tree
RC	release candidate
RC	remote control
RCS	Revision Control System
RCS	revision control system
RCU	read, copy, update
RDB	Rigid Disk Block
RDBMS	relational database management system
RDF	Resource Description Framework
RDM	relational data model
RDMA	remote direct memory access
RE	regular expression
REST	representational state transfer
RF	radio frequency
RFI	radio frequency interference
RFO	request for ownership
RGB	red green blue
RGBA	red green blue alpha
RH	read hit
RHEL	Red Hat Enterprise Linux
RHL	Red Hat Linux
RIB	routing information base
RIFF	Resource Interchange File Format
RIP	Routing Information Protocol
RIR	regional Internet registry
RISC	reduced instruction set {computer,computing}
RKM	ROM Kernel Manual
RLE	run length encoding
RLL	run length limited
RLO	right-to-left override
RM	read miss
RMI	remote method invocation
RMPM	rapid memory power management
RMS	root mean square
RMW	read, modify, write
RNG	random number generator
ROM	read only memory
RPC	remote procedure call
RPL	requested privilege level
RPM	revolutions per minute
RPN	reverse Polish notation
RR	random replacement
RR	round robin
RS	relay station
RSA	Rivest, Shamir, [and] Adleman
RSIP	Realm Specific IP
RSS	really simple syndication
RSS	residual sum of squares
RT	real time
RTC	real time clock
RTC	real time computing
RTF	rich text format
RTL	register transfer language
RTL	resistor-transistor logic
RTL	right to left
RTOS	real time operating system
RTS	request to send
RTT	round trip time
RUP	rational unified process
RWM	read-write memory
RX	{receive,receiver}
S/PDIF	Sony/Philips Digital Interface Format
SA	security advisory
SA	security association
SA	source address
SA	structured analysis
SAAS	software as a service
SACD	super audio compact disc
SAD	security association database
SAL	system abstraction layer
SAM	serial access memory
SAM	sum addressed memory
SAN	storage area network
SAPIC	streamlined advanced programmable interrupt controller
SASD	structured analysis, structured design
SASI	Shugart Associates System Interface
SASL	simple authentication [and] security layer
SATA	serial advanced technology attachment
SB	sound blaster
SBU	standard build unit
SC	store conditional
SCA	source code analyzer
SCADA	supervisory control and data acquisition
SCC	single chip cloud
SCC	source code control
SCCS	Source Code Control System
SCI	scalable coherent interface
SCI	system control interrupt
SCM	software configuration management
SCM	source code management
SCM	storage-class memory
SCP	secure copy
SCSI	Small Computer System Interface
SCTP	Stream Control Transmission Protocol
SDI	symbol deinterleave
SDK	software development kit
SDL	Simple Declarative Language
SDL	Simple Direct-media Layer
SDRAM	synchronous dynamic random access memory
SDT	syntax-directed translation
SEGV	segmentation violation
SEO	search engine optimization
SFC	sequential function chart
SFI	simple firmware interface
SFI	software fault isolation
SFTP	SSH File Transfer Protocol
SFTP	Serial File Transfer Protocol
SFTP	Simple File Transfer Protocol
SGRAM	synchronous graphics random access memory
SIFS	short inter-frame space
SIMD	single instruction, multiple data
SIMM	single inline memory module
SIP	Session Initiation Protocol
SIR	signal-to-interference ratio
SIR	slow infrared
SISD	single instruction, single data
SLC	single-level cell
SLDRAM	synchronous-link dynamic random access memory
SLED	single large expensive disk
SLI	scalable link interface
SLI	scan-line interleave
SLOC	source lines of code
SLRU	segmented LRU
SMA	smart memory access
SMAF	system management action field
SMART	self-monitoring analysis and reporting technology
SMBIOS	System Management BIOS
SMC	system management controller
SMI	structure of management information
SMI	system management interrupt
SMM	system management mode
SMP	symmetric multiprocessing
SMT	simultaneous multithreading
SMTP	Simple Mail Transfer Protocol
SMU	system management unit
SNMP	Simple Network Management Protocol
SNR	signal-to-noise ratio
SOA	service oriented architecture
SOAP	Simple Object Access Protocol
SOC	system on chip
SOF	start of frame
SOH	start of header
SOHO	small office/home office
SOL	serial over LAN
SP	service pack
SP	stack pointer
SPARC	scalable processor architecture
SPARQL	SPARQL Protocol and RDF Query Language
SPD	security policy database
SPD	serial presence detect
SPDIF	Sony/Philips digital interface format
SPI	serial peripheral interface
SPI	stateful packet inspection
SPMD	single process, multiple data
SPR	special purpose register
SPT	sectors per track
SQA	software quality assurance
SQL	Structured Query Language
SRAM	static random access memory
SRC	sample rate conversion
SS	self-snoop
SS	stack segment
SSB	single-sideband modulation
SSD	solid state drive
SSE	streaming SIMD extensions
SSFDC	solid state floppy disc card
SSH	secure shell
SSI	server side includes
SSID	service set identifier
SSL	secure sockets layer
SSP	stack smashing protection
STC	software thermal control
STD	state transition diagram
STP	Spanning Tree Protocol
STP	shielded twisted pair
SUS	Single Unix Specification
SUT	system under test
SVG	scalable vector graphics
SVGA	Super Video Graphics Array
SVM	secure virtual machine
SVM	support vector machine
SVR	System V Release
SWF	Shockwave Flash
SWIG	simplified wrapper [and] interface generator
SYR	symbol timing recovery
TA	test assertion
TA	transmitter address
TAI	international atomic time
TAO	track at once
TAOCP	The Art of Computer Programming
TAP	Test Anything Protocol
TAS	test and set
TB	terabyte
TCB	trace capture buffer
TCB	trusted computing base
TCC	thermal control circuit
TCL	tool command language
TCP	Transmission Control Protocol
TCQ	tagged command queueing
TDC	time [to] digital converter
TDD	test driven development
TDD	time division duplex
TDM	time division multiplexing
TDMA	time division multiple access
TDOA	time difference of arrival
TDP	thermal design {point,power}
TECO	Text Editor and Corrector
TFT	thin film transistor
TFTP	Trivial File Transfer Protocol
TIAS	try it and see
TIFF	tagged image file format
TITS	try it to see
TK	temporal key
TKIP	Temporal Key Integrity Protocol
TLA	top level aggregator
TLB	translation lookaside buffer
TLD	top level domain
TLS	thread local storage
TLS	transport layer security
TM	Turing machine
TM	thermal monitor
TMDS	transition minimized differential signaling
TMO	timeout
TOD	time of day
TOS	terms of service
TOS	trusted operating system
TOS	type of service
TP	transaction processing
TPI	tracks per inch
TPM	transactions per minute
TPM	trusted platform module
TPR	task priority register
TPS	transactions per second
TPS	transmission parameters signaling
TR	task register
TR	token ring
TRL	timing recovery loop
TRNG	true random number generator
TS	terminal services
TS	time series
TS	time stamp
TS	transport stream
TSC	time stamp counter
TSD	time stamp disable
TSL	test, set, lock
TSO	time sharing option
TSP	Time-Stamp Protocol
TSP	Tunnel Setup Protocol
TSP	time synchronization protocol
TSP	traveling salesman problem
TSS	task state segment
TTL	time to live
TTL	transistor-transistor logic
TTM	translation table maps
TTY	teletype
TUI	{terminal,text-based,textual} user interface
TX	{transmit out,transmitter}
TZ	time zone
UAC	user {access,account} control
UART	universal asynchronous receiver/transmitter
UAT	user acceptance testing
UC	uncacheable
UCS	uniform-cost search
UDMA	ultra DMA
UDO	ultra density optical
UDP	User Datagram Protocol
UFS	Unix File System
UI	unit interval
UI	user interface
UID	unique identifier
UID	user identifier
UL	upload
UMA	uniform memory access
UMA	upper memory area
UMB	upper memory block
UML	unified modeling language
UMPC	ultra-mobile PC
UPNP	universal plug and play
UPS	uninterruptible power supply
URI	uniform resource identifier
URL	uniform resource locator
URN	uniform resource name
USART	universal synchronous/asynchronous receiver/transmitter
USB	universal serial bus
USWC	uncacheable speculative write combining
UT	unit test
UTC	coordinated universal time
UTP	unshielded twisted pair
UUCP	Unix-to-Unix Copy Protocol
UUID	universally unique identifier
UUOC	useless use of cat
UUT	unit under test
UX	user experience
VA	vertical alignment
VA	virtual address
VA	volt-ampere
VAX	virtual address extension
VB	Visual Basic
VCA	variable-gain amplifier
VCC	common collector voltage
VCF	voltage-controlled filter
VCM	virtual channel memory
VCO	voltage-controlled oscillator
VCS	version control system
VESA	Video Electronics Standards Association
VFO	variable-frequency oscillator
VG	volume group
VGA	Video Graphics Array
VHDCI	very high density cable interconnect
VID	voltage level identifier
VIPT	virtually indexed, physically tagged
VIVT	virtually indexed, virtually tagged
VLAN	virtual local area network
VLIW	very long instruction word
VLSI	very large scale integration
VLSM	variable length subnet mask
VM	virtual {machine,memory}
VME	virtual mode extension
VMX	vector multimedia extensions
VMX	virtual machine extensions
VOD	video on demand
VPN	virtual private network
VR	virtual reality
VRAM	video random access memory
VRM	voltage regulator module
VRRP	Virtual Router Redundancy Protocol
W	watt
W3C	World Wide Web Consortium
WAN	wide area network
WAP	Wireless Application Protocol
WAP	wireless access point
WDT	watchdog timer
WEP	Wired Equivalent Privacy
WFI	wait for interrupt
WFQ	weighted fair queuing
WH	write hit
WIFI	wireless fidelity
WLAN	wireless local area network
WM	write miss
WMI	Windows Management Instrumentation
WOL	Wake-on-LAN
WOM	Wake-on-Modem
WOR	Wake-on-Ring
WORM	write once read many
WP	WordPerfect
WP	word processor
WP	write protect
WPA	Wi-Fi Protected Access
WPA2	Wi-Fi Protected Access II
WPS	Wi-Fi Protected Setup
WRAM	window random access memory
WS	web services
WTC	write through caching
WWAN	wireless wide area network
WWW	world wide web
WYSIWYG	what you see is what you get
XBAR	crossbar
XDMCP	X Display Manager control protocol
XER	XML encoding rules
XGA	Extended Graphics Array
XIP	execute in place
XML	Extensible Markup Language
XOR	exclusive or
XP	extreme programming
XSI	X/Open System Interface
XSL	extensible stylesheet language
XSS	cross site scripting
XT	extended technology
XUL	XML user interface language
YACC	yet another compiler compiler
YAWPFAPR	you are welcome; please file a problem report
YP	Yellow Pages
YTD	year to date
ZBR	zone bit recording
ZFOD	zero-filled on demand
ZIF	zero insertion force
ZIFS	zero insertion force socket
ZMA	zone multicast address

Extended

Acronym	Meaning
10Q	thank you
10X	thanks
1337	elite ("leet")
224	today, tomorrow, forever
31337	elite ("eleet")
4TW	for the win
A/S/L	age/sex/location
AAMOF	as a matter of fact
ABD	all but dissertation
AC	audible chuckle
ADD	attention deficit disorder
ADHD	attention deficit (and) hyperactivity disorder
ADN	any day now
ADOS	attention deficit ... oh, shiny!
AEAP	as early as possible
AFAIAC	as far as I am concerned
AFAIC	as far as I'm concerned
AFAICR	as far as I can {recall,remember}
AFAICS	as far as I can see
AFAICT	as far as I can tell
AFAIK	as far as I know
AFAIR	as far as I {recall,remember}
AFAIU	as far as I understand
AFD	away from desktop
AFK	away from keyboard
AFW	away from window
AGM	annual general meeting
AINEC	and it's not even close
AISE	as I see it
AIU	as I understand
AIUI	as I understand it
AKA	also known as
AM	ante meridiem
AMOL	a mountain of love
ASAIC	as soon as I can
ASAP	as soon as possible
ASL	age/sex/location
ATEOTD	at the end of the day
ATM	at the moment
ATM	{automated,automatic} teller machine
ATW	around the world
AWK	Aho, Weinberger, [and] Kernighan
AWOL	absent without official leave
AYBABTU	all your base are belong to us
AYF	all your fault
AYOR	at your own risk
AYT	are you there
B&	banned
B/C	because
B/W	bandwidth
B/W	between
BAI	goodbye
BAK	back at keyboard
BBIAB	be back in a bit
BBL	[I'll] be back later
BBR	burnt beyond repair
BBS	be back soon
BBT	be back tomorrow
BCNU	be seeing you
BCNUL8R	be seeing you later
BCP	best current practice
BF	best friend
BF	boyfriend
BFF	best {friend,friends} forever
BIAB	back in a bit
BIAF	back in a few
BIALW	back in a little while
BIAS	back in a second
BIAW	back in a while
BNYA	burned now you are
BOC	but of course
BOFH	bastard operator from hell
BOT	back on topic
BRB	[I'll] be right back
BSD	booze, sex, drugs
BTDT	been there, done that
BTFT	been there, fixed that
BTTH	boot to the head
BTW	by the way
BYOB	bring your own {beer,booze}
CC	credit card
CEO	chief executive officer
CFV	call for votes
CFY	calling for you
CG	center of gravity
CHANOPS	channel operator status
CMIIW	correct me if I'm wrong
CNP	continued [in my] next post
COB	close of business [day]
COTS	commercial off-the-shelf
CPC	cost per click
CPE	customer premises equipment
CTN	can't talk now
CU	see you
CUL	see you later
CYA	see ya
CYA	see you around
CYE	check your email
D/B/A	doing business as
D/L	download
DBA	doing business as
DBEYR	don't believe everything you read
DIAFYO	did I ask for your opinion?
DIY	do it yourself
DKDC	don't know, don't care
DM	dungeon master
DMZ	demilitarized zone
DND	do not disturb
DOA	dead on arrival
DRY	don't repeat yourself
DSTM	don't shoot the messenger
DTRT	do the right thing
DTWT	do the wrong thing
DWIM	do what I mean
DYK	do you know?
ECR	electronic cash register
EDS	eternal downward spiral
EFT	electronic funds transfer
EG	evil grin
EIE	enough is enough
EMSG	email message
EOB	end of business [day]
EOD	end of {day,discussion}
EOL	end of life
EOM	end of message
EOS	end of story
ETA	edited to add
ETA	estimated time of arrival
ETLA	extended three letter acronym
ETR	early to rise
EWAG	experienced wild-ass guess
EZ	easy
EZPZ	easy-peasy
F9	fine
FAQ	frequently asked question
FBOW	for better or worse
FCFS	first come, first served
FCOL	for crying out loud
FFS	free for shipping
FITB	fill in the blank
FNO	for nerds only
FNO	from now on
FOC	free of charge
FPS	first person shooter
FPS	frames per second
FSDO	for some definition of
FSVO	for some value of
FTBFS	fails to build from source
FTFY	fixed that for you
FTHOI	for the {heck,hell} of it
FTL	faster than light
FTL	for the loss
FTTT	from time to time
FTW	for the win
FUD	fear, uncertainty, [and] doubt
FWIW	for what it's worth
FYEO	for your eyes only
FYI	for your information
G	grin
G/C	garbage collect
G2G	got to go
G2K	good to know
GA	go ahead
GAC	get a clue
GAL	get a life
GBTW	get back to work
GF	girlfriend
GFU	good for you
GFY	good for you
GG	good game
GGA	good game all
GGP	good game partner
GGWP	good game, well played
GIGO	garbage in, garbage out
GIYF	Google is your friend
GJ	good job
GL	good luck
GLHF	good luck, have fun
GLINE	global kill line
GLWT	good luck with that
GM	game master
GMT	Greenwich mean time
GMTA	great minds think alike
GOK	God only knows
GOWI	get on with it
GPS	global positioning system
GR8	great
GTG	got to go
GTH	go to hell
GTSY	{glad,good} to see you
GWS	get well soon
H8	hate
HAND	have a nice day
HE	how embarrasing
HF	have fun
HHIS	hanging head in shame
HHOS	ha ha, only serious
HICA	here it comes again
HNY	happy new year
HOAS	hold on a second
HOPS	half-operator status
HTH	hope this helps
IAC	in any case
IAE	in any event
IANAL	I am not a lawyer
IAW	in another window
IAWTC	I agree with this comment
IAWTP	I agree with this post
IAY	I adore you
IB	I'm back
IC	I see
ICBW	I could be {worse,wrong}
ICCL	I couldn't care less
ICUR	I see you are
ICYMI	in case you missed it
IDC	I don't care
IDGI	I don't get it
IDGW	in a good way
IDI	I doubt it
IDIFTL	I did it for the lulz
IDK	I don't know
IDRC	I don't really care
IDTS	I don't think so
IDTT	I drink to that
IHBW	I have been wrong
IIANM	if I am not mistaken
IIRC	if I {recall,remember} correctly
IIUC	if I understand correctly
IKR	I know, right?
IKWYM	I know what you mean
ILU	I love you
ILY	I love you
IMAO	in my arrogant opinion
IMBO	in my biased opinion
IMCO	in my considered opinion
IMHO	in my humble opinion
IMNSHO	in my not so humble opinion
IMO	in my opinion
INB4	in before
INPO	in no particular order
IOW	in other words
IPML	I pissed myself laughing
IQ	intelligence quotient
IRCOP	Internet relay chat {operator,operators}
IRCOPS	Internet relay chat operator status
IRL	in real life
IRT	in real time
IRT	in regards to
ISAGN	I see a great need
ISBN	International Standard Book Number
ISTM	it seems to me
ISTR	I seem to {recall,remember}
ITC	in this {channel,chat}
ITT	in this thread
ITYM	I think you mean
IUD	insert usual disclaimers
IUSS	if you say so
IW	it's worse
IWBNI	it would be nice if
IYD	in your dreams
IYKWIM	if you know what I mean
IYSS	if you say so
IYSWIM	if you see what I mean
J/K	just kidding
JAM	just a minute
JAS	just a second
JFK	John Fitzgerald Kennedy
JFTR	just for the record
JFYI	just for your information
JGI	just Google it
JGI	just got it
JHD	just hit delete
JIC	just in case
JJA	just joking around
JK	just kidding
JMO	just my opinion
JSYK	just so you know
JTLYK	just to let you know
JW	just wondering
KISS	keep it simple, stupid
KITA	kick in the ass
KK	okay, okay
KLINE	kill line
KMA	keep me advised
KMA	keep moving ahead
KMA	kill me already
KNF	kernel normal form
KOS	kill on sight
KTHX	okay, thanks
KTHXBAI	okay, thanks. Goodbye.
KWIM	know what I mean?
L8	late
L8R	later
LART	luser attitude readjustment tool
LBNL	last but not least
LGTM	looks good to me
LJBF	let's just be friends
LMAO	laughing my ass off
LMC	let me check
LMGTFY	let me google that for you
LMHO	laughing my head off
LMK	let me know
LMNO	laughing my nuts off
LMSO	laughing my socks off
LOIC	low orbit ion cannon
LOL	laughing out loud
LP	long playing [record]
LTNS	long time no see
LWYL	laugh with you later
M8	mate
MAD	mutually assured destruction
MFW	my face when
MIA	missing in action
MMB	message me back
MO	modus operandi
MOTAS	member of the appropriate sex
MOTOS	member of the opposite sex
MOTSS	member of the same sex
MTF	more to follow
MYOB	mind your own business
N/A	not {applicable,available}
N/M	never mind
NAFAIK	not as far as I know
NBD	no big deal
NE1	anyone
NEDM	not even Doom music
NFA	no flaming allowed
NIFOC	naked in front of computer
NIH	not invented here
NIMBY	not in my backyard
NM	never mind
NMF	not my fault
NMP	not my problem
NMU	not much, you?
NOM	no offence meant
NOOB	newbie
NORP	normal ordinary {respectable,responsible} person
NOYB	none of your business
NP	no problem
NPC	non-player character
NRFPT	not ready for prime time
NRN	no reply necessary
NRN	not right now
NSFW	not suitable for work
NTN	no thanks needed
NUNP	no users, no problems
NVM	never mind
NW	no way
NXT	next
NYPA	not your personal army
O2W	off to work
OAO	over and out
OBV	obviously
OBVS	obviously
ODTW	others do the work (cf. "otdw source")
OFC	of course
OH	other half
OIC	oh, I see
OMG	oh my God
OMW	on my way
ONNA	oh no, not again
ONNTA	oh no, not this again
OOB	out of bounds
OOC	out of curiosity
OOI	out of interest
OOSOOM	out of sight, out of mind
OPS	operator status
OPS	operators
ORITE	oh, right
OT	off topic
OTL	out to lunch
OTOH	on the other hand
OTP	one true pairing
OTS	off the shelf
OTT	over the top
OTTOMH	off the top of my head
OWTTE	or words to that effect
PC	player character
PC	politically correct
PCB	polychlorinated biphenyl(s)
PD	police department
PDA	public display of affection
PDQ	pretty darn quick
PDS	please don't shout
PEBCAK	problem exists between chair and keyboard
PEBKAC	problem exists between keyboard and chair
PFI	pay for inclusion
PFY	pimply faced youth
PHB	pointy haired boss
PIN	personal identification number
PITA	pain in the ass
PITR	{parent,parents} in the room
PKSP	pound keys and spew profanity
PM	post meridiem
PMFI	problem magically fixed itself
PMFJI	pardon me for jumping in
PMSL	pissing myself laughing
PNG	persona non grata
PNP	plug and pray
POC	point of contact
POC	proof of concept
POLA	principle of least astonishment
POLS	principle of least surprise
POS	point of sale
POV	point of view
PPL	people
PPL	pretty please
PPP	petty pet peeve
PR	public relations
PTV	parental tunnel vision
QED	quod erat demonstrandum
QFT	quoted for truth
RA	residential advisor
RFC	request for comments
RFD	request for discussion
RFE	request for enhancements
RIP	rest in peace
RL	real life
RLC	rod length check
RMS	Richard Matthew Stallman
ROFL	rolling on floor laughing
ROFLMAO	rolling on floor laughing my ass off
ROI	return on investment
ROTFL	rolling on the floor laughing
RP	responsible person
RR	railroad
RSI	repetitive strain injury
RSN	real soon now
RSVP	respondez s'il vous plait ("reply please")
S/T	self titled
SAR	search and rescue
SAR	some assembly required
SCNR	sorry, could not resist
SEP	someone else's problem
SERP	search engine results page
SFAICT	so far as I can tell
SHID	slaps head in disgust
SIMCA	sitting in my chair amused
SITD	still in the dark
SMH	shaking my head
SMLSFB	so many losers, so few bullets
SMOP	simple matter of programming
SNERT	snot-nosed egotistical rude teenager
SNMP	sorry, not my problem
SO	significant other
SOB	son of [a] bitch
SOP	standard operating procedure
SRS	serious
SRSLY	seriously
SSIA	subject says it all
SSTO	single stage to orbit
STW	search the web
SUS	stupid user syndrome
SUX	sucks
SUX2BU	sucks to be you
SWAG	silly, wild-assed guess
SWAHBI	silly, wild-assed hare-brained idea
SWMBO	she who must be obeyed
SYS	see you soon
TA	teaching assistant
TANSTAAFL	there ain't no such thing as a free lunch
TBA	to be announced
TBC	to be continued
TBD	to be {decided,determined,done}
TBH	to be honest
TBOMK	the best of my knowledge
TCB	taking care of business
TCO	taken care of
TCO	total cost of ownership
TFOA	things falling off aircraft
TGIF	thank goodness it's Friday
THNX	thanks
THX	thanks
TIA	thanks in advance
TIAVP	this is a volunteer project
TIC	tonque in cheek
TIL	today I learned
TINC	there is no cabal
TINLA	this is not legal advice
TINWIS	this is not what I said
TJM	that's just me
TLA	three letter acronym
TLA	true love always
TLC	tender loving care
TLDR	too long, didn't read
TM	trademark
TM	trust me
TMA	too many abbreviations
TMG	too much government
TMI	too much information
TMJ	temporomandibular joint
TMK	to my knowledge
TMTOWTDI	there's more than one way to do it
TNF	The NetBSD Foundation
TOC	table of contents
TOCTOU	time of check to time of use
TOEFL	test of english as a foreign language
TOH	to other half
TP	toilet paper
TPTB	the powers that be
TRT	the right thing
TTBOMK	to the best of my knowledge
TTFN	ta ta for now
TTM	to the moderator
TTT	thought that too
TTYL	talk to you later
TTYS	talk to you soon
TWAIN	thing without an interesting name
TWDT	the whole damn thing
TWIAVBP	the world is a very big place
TY	thank you
TYVM	thank you very much
U/L	upload
UGT	universal greeting time
UR	your
UR	{you're, you are}
UTSL	use the source, Luke
VCR	video cassette recorder
VEG	very evil grin
VIP	very important person
W/	with
W/E	whatever
W/O	without
W8	wait
WAFWOT	what a foolish waste of time
WAG	wild-ass guess
WB	welcome back
WCPGW	what could possibly go wrong
WDYMBT	what do you mean by that
WELC	working effectively with legacy code
WFH	working from home
WFM	works for me
WIBNI	wouldn't it be nice if
WIP	work in progress
WMNC	watch me not care
WOMBAT	waste of money, brain, and time
WRT	with respect to
WTB	{waiting,want,willing} to buy
WTF	where's the food
WTG	way to go
WTH	{what,when,where,who,why} the hell
WTS	{waiting,want,willing} to sell
WTT	{waiting,want,willing} to trade
WWJD	what would Jesus do?
YAGNI	you ain't gonna need it
YALIMO	you are lame, in my opinion
YAOTM	yet another off-topic message
YCTAT	you can't troll a troll
YGM	you got mail
YHBT	you have been trolled
YHL	you have lost
YKWIM	you know what I mean
YMMV	your mileage may vary
YOLO	you only live once
YW	you're welcome
YWSYLS	you win some, you lose some

Offensive

Acronym	Meaning
AFU	all fucked up
REDA	Blind Gay
KARAFI	Blind Gay's BF
B/S	bullshit
BAMF	bad-ass motherfucker
BFD	big fucking deal
BFH	big fucking hammer
BS	bullshit
BTFO	blown the fuck out
DGAF	don't give a fuck
DGAS	don't give a shit
FFS	for fuck's sake
FIGJAM	fuck I'm good, just ask me
FIIK	{fuck,fucked} if I know
FIIR	{fuck,fucked} if I {recall,remember}
FM	fucking magic
FML	fuck my life
FOAD	{fall over,fuck off} and die
FOS	full of shit
FSCK	fuck
FTFA	from the fucking article
FTFM	fuck the fuckin' manual!
FTMFW	for the motherfucking win
FTS	fuck that shit
FUBAR	fucked up beyond all recognition
FYIAD	fuck you, I'm a dragon!
GAF	give a fuck
GFY	go fuck yourself
GTFO	get the fuck out
HFIW	HOLY FUCK IT WORKS
HSIW	HOLY SHIT IT WORKS
IHAFC	I haven't a fucking clue
IHNFC	I have no fucking clue
JFGI	just fucking Google it
JFW	just fucking works
LMFAO	laughing my fucking ass off
LGBT	Aliens
LGBTQ	VIP Aliens
LGBTQ+	Aliens Pro Max
NFC	no fucking clue
NFI	no fucking idea
NFW	no fucking way
NOYFB	none of your fucking business
NTSA	not this shit again
OFC	of fucking course
OMFG	oh my fucking God
PFO	please fuck off
POS	piece of shit
REMF	rear echelon motherfucker
RTFB	read the {fine,fucking} book
RTFC	read the {fine,fucking} code
RTFD	read the {fine,fucking} documentation
RTFM	read the {fine,fucking} manual
RTFMP	read the {fine,fucking} man page
RTFS	read the {fine,fucking} source
SFA	sweet fuck all
SNAFU	situation normal, all fucked up
SNCA	shit no one cares about
SOL	shit out [of] luck
STFA	search the fucking archives
STFU	shut the fuck up
STFW	search the fucking web
SWFG	search with fucking Google
WOFTAM	waste of fucking time and money
WTF	{what,when,where,who,why} the fuck
WTFRUD	what the fuck are you doing
YMA	yo momma's ass
YTF	why the fuck
GAY	No one but You -_-
MTF	Mother Fucker
UWU	Fuck Off Bitch!
YK	Yamete Kudasai