PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
2	0D	obvious deed
3	1AM	Air Mechanic 1st Class
4	1D	One-Dimensional
5	2AM	Air Mechanic 2nd Class
6	2D	Two-dimensional
7	2LA	Two Letter Acronym
8	2Lt	2nd Lieutenant
9	3AM	Air Mechanic 3rd Class
10	3D	Three-Dimensional
11	3G	Third-generation mobile telephone system
12	3i	Investors In Industry (venture capitalists)
13	3M	Minnesota Mining and Manufacturing Company
14	4G	Fourth-generation mobile telephone system
15	4WD	Four-wheel drive
16	5D	Five-Dimensional
17	6D	Six-Dimensional
18	7D	Seven-Dimensional
19	8D	Eight-Dimensional
20	9D	Nine-Dimensional
21	A	Ampere
22	A10	Atlantic 10 Conference
23	A1C	Airman First Class
24	A4	European standard office paper size
25	aA	Attoampere
26	AAA	administration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
27	AAAS	American Association for the Advancement of Science
28	AAAV	Advanced Amphibious Assault Vehicle
29	AADAC	Alberta Alcohol and Drug Abuse Commission
30	AADD	Adult attention deficit disorder
31	AADT	annual average daily traffic
32	AAFES	Army and Air Force Exchange Service
33	AAIS	advanced airborne interceptor simulator
34	AAM	air-to-air missile
35	AAMOF	as a matter of fact
36	AAN	American Academy of Nursing
37	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
38	AAODL	Atmospheric Aerosols and Optics Data Library
39	AAPC	Accounting and Auditing Policy Committee
40	AARP	American Association of Retired Persons (now officially known only by the initials)
41	AASPEM	advanced air-to-air system performance evaluation model
42	AAT	Australian Antarctic Territory
43	AAV	Amphibious Assault Vehicle
44	AAWC	anti-air warfare commander
45	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
46	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
47	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48	ABC	the first three letters of the Latin script known as the alphabet
49	ABC	abstinence, be faithful, condoms
50	ABC	Active Body Control
51	ABC	airway, breathing, circulation
52	ABC	Alcoholic Beverage Commission
53	ABC	alien big cat
54	ABC	always be careful
55	ABC	American-born Chinese
56	ABC	anti-lock brake controller
57	ABC	atomic, biological, chemical
58	ABCS	(U.S.) Army Battle Command System
59	ABET	Accreditation Board for Engineering and Technology
60	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
61	ABGI	Addington-Barker Group International
62	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
63	ABL	American Basketball League
64	ABLE	AirBorne Law Enforcement (police air support unit)
65	ABMC	American Battle Monuments Commission
66	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67	ABPI	Association of the British Pharmaceutical Industry
68	ABRSM	Associated Board of the Royal Schools of Music
69	ABS	acrylonitrile butadiene styrene, or: anti-lock braking system
70	ABSA	Amalgamated Banks of South Africa
71	ABSTRIPS	abstraction-based STRIPS
72	ABV	Alcohol by volume
73	ABW	Aruba (ISO 3166 trigram)
74	Ac	Actinium
75	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Antigua and Barbuda (FIPS 10-4 country code),Associazione Calcio (Italian,'football (soccer) club'),A/C,Air Conditioned/Conditioning,Aircraft
76	aC	Attocoulomb
77	AC1	Aircraftman 1st Class
78	AC2	Aircraftman 2nd Class
79	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80	ACARS	Aircraft Communications Addressing and Reporting System
81	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
82	ACCD	American Coalition of Citizens with Disabilities
83	ACCS	Air Communications and Control Squadron
84	ACDA	Arms Control & Disarmament Agency
85	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
86	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
87	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
88	ACHT	Average Call Hold Time
89	ACINT	Acoustic Intelligence
90	ACK	Acknowledge (telecommunications; cf. NAK)
91	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
92	ACLJ	American Center for Law and Justice
93	ACLOS	Automatic CLOS (missile control system)
94	ACLS	American Council of Learned Societies
95	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
96	ACM	many,including Association for Computing Machinery; see entry
97	ACMC	(U.S.) Assistant Commandant of the Marine Corps
98	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
99	ACNA	Anglican Church in North America
100	ACO	Airspace Control Order
101	ACOBA	Advisory Committee on Business Appointments
102	ACOG	American College of Obstetricians and Gynecologists
103	ACOM	(U.S.) Atlantic Command
104	ACORN	Association of Community Organizations for Reform Now
105	ACP	African,Caribbean and Pacific Group of States,Air Control Point
106	ACR	Advanced Concepts and Requirements
107	ACRI	African Crisis Initiative
108	ACRT	Advanced Concepts Research Tool simulator
109	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
110	ACSC	Army Command and Staff College (various nations)
111	ACST	American Cooperative School of Tunis
112	ACST	Australian Central Standard Time
113	ACT	Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP,AIDS Coalition to Unleash Power
114	ACTD	Advanced Concept Technology Demonstration
115	ACTF	(U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R,ACT-Rational (cognitive model),ACT-R/PM,ACT-R/Perceptual-Motor (cognitive model)
116	ACTU	Australian Council of Trade Unions
117	ACU	American Conservative Union
118	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
119	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
120	ADAGE	Air Defense Air to Ground Engagement (simulation)
121	ADAP	AIDS Drug Assistance Program
122	ADAS	Asiago-DLR Asteroid Survey
123	ADAT	Alesis Digital Audio Tape (recording format)
124	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
125	ADB	Asian Development Bank
126	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
127	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
128	ADDIE	Analyze Design Develop Implement and Evaluate
129	ADDNS	Advanced Deployable Day/Night Simulation
130	ADGB	Air Defence of Great Britain
131	ADHD	Attention-Deficit Hyperactivity Disorder
132	ADHS	Attention-Deficit Hyperactivity Syndrome
133	ADI	Acceptable/Allowable Daily Intake
134	ADIZ	Air Defence Identification Zone
135	ADL	Anti-Defamation League
136	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
137	ADOA	Air Defence Operations Area
138	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
139	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
140	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
141	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
142	ADT	Atlantic Daylight Time (UTC−3 hours)
143	ADTB	Army Doctrine and Training Bulletin
144	ADW	Air Defence Warning
145	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
146	AEDT	Australian Eastern Daylight Time
147	AEF	American Expeditionary Force
148	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
149	AESR	Aeronautical Equipment Service Record
150	AEST	Australian Eastern Standard Time
151	aet	After extra time (Football)
152	AEW	Airborne Early Warning,Airborne Electronic Warfare
153	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
154	aF	Attofarad
155	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
156	AFAIC	As Far As I'm Concerned
157	AFAICT	As Far As I Can Tell
158	AFAIK	As Far As I Know
159	AFAIR	As Far As I Remember/Recall
160	AFATDS	Advanced Field Artillery Tactical Data System
161	AFCEA	Armed Forces Communications and Electronics Association
162	AFDB	African Development Bank
163	AFES	Automatic Fire Extinguishing System
164	AFG	Afghanistan (ISO 3166 trigram)
165	AFIST	Abrams Full Crew Interactive Skills Trainer
166	AFJ	April Fool's Joke
167	AFK	Away From Keyboard (Internet chat abbreviation)
168	AFLAC	American Family Life Assurance Company of Columbus
169	AFO	Association of Field Ornithologists
170	AFOSR	U.S. Air Force Office of Scientific Research
171	AFQT	Armed Forces Qualification Test
172	AFRC	Air Force Reserve Command
173	AFRL	Air Force Research Laboratory
174	AFROTC	Air Force Reserve Officer Training Corps
175	AFRTS	Armed Forces Radio and Television Service
176	AFSCN	U.S. Air Force Satellite Control Network
177	AFSPC	Air Force Space Command
178	AFT	American Farmland Trust
179	AFV	armoured fighting vehicle
180	ag	Attogram
181	Ag	Silver (Latin argentum)
182	AGARD	Advisory Group for Aerospace Research and Development
183	AGARDograph	Advanced Guidance for Alliance Research and Development publication
184	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
185	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
186	AGC	Adjutant General's Corps (British Army)
187	AGDC	Australian Game Developers' Conference
188	AGI	Auxiliary Group Intelligence
189	AGL	Above Ground Level
190	AGM	Annual General Meeting
191	AGN	Active Galactic Nucleus
192	AGO	Angola (ISO 3166 trigram)
193	AGP	Accelerated Graphics Port
194	AGRICOLA	Agriculture Online Access
195	AGS	Alaska Ground Station (LandSat)
196	AGTS	Advanced Gunnery Training System
197	AGU	American Geophysical Union
198	AGW	Autonomous Guided Weapon
199	Ah	Ampere-hour
200	AH	Attack Helicopter
201	aH	Attohenry
202	AHA	American Heart Association
203	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
204	AHEC	Australian Health Ethics Committee
205	AHPCRC	Army High Performance Computing Research Center
206	AHQ	Air Headquarters
207	AHRQ	Agency for Healthcare Research and Quality
208	AHS	American Housing Survey
209	AIAA	American Institute of Aeronautics and Astronautics
210	AICD	Australian Institute of Company Directors
211	AICMFP	And I Claim My Five Pounds
212	AID	U.S. Agency for International Development
213	AIDS	Acquired Immune Deficiency Syndrome
214	AIM	Australian Institute of Management
215	AIMP	Aurora Incremental Modernization Project
216	AIPAC	American Israel Public Affairs Committee
217	AIR	Aircraft Inventory Record
218	AIRFA	American Indian Religious Freedom Act
219	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
220	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
221	aJ	Attojoule
222	AJ	Azerbaijan (FIPS 10-4 country code)
223	Ajax	Asynchronous JavaScript And XML
224	AJD	Astronomical Julian day
225	AJP	Allied Joint Publication
226	AJPW	All Japan Pro Wrestling
227	AK	Alaska (postal symbol)
228	aK	Attokelvin
229	AKA	Above knee amputation (orthopaedic usage)
230	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
231	AKST	Alaska Standard Time (UTC−9 hours)
232	Al	Aluminium
233	aL	Attolitre
234	ALA	Åland Islands (ISO 3166 trigram)
235	ALAP	As Long/Late As Possible
236	ALARM	Air-Launched Anti-Radar Missile
237	ALB	Albania (ISO 3166 trigram)
238	ALD	Accounting Line Designator (nuclear weapon targeting)
239	ALGOL	ALGOrithmic Language
240	ALPA	Air Line Pilots Association
241	ALSHS	Abraham Low Self-Help Systems
242	ALSP	Aggregate Level Simulation Protocol
243	ALTE	Association of Language Testers in Europe
244	Am	Americium
245	AM1	Airman 1st class
246	AMCB	U.S. Army/Marine Corps Board
247	AML	Acute Myeloid Leukaemia
248	AMLCD	Active Matrix Liquid Crystal Display
249	AMO	Atlantic Multidecadal Oscillation
250	AMOLED	Active-matrix organic light-emitting diode
251	AMRAAM	Advanced Medium-Range Air-to-Air Missile
252	AMSAA	U.S. Army Materiel Systems Analysis Activity
253	AMSO	U.S. Army Model and Simulation Office
254	AMSU	Advanced Microwave Sounding Unit
255	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
256	aN	Attonewton
257	ANC	African National Congress
258	AND	Andorra (ISO 3166 trigram)
259	ANFO	Ammonium nitrate/fuel oil (explosive)
260	ANGLiCo	Air/Naval Gunfire Liaison Company
261	ANL	Argonne National Laboratory
262	ANM	Acoustic Noise Monitor
263	ANOVA	ANalysis Of VAriance
264	ANS	Applied and Natural Sciences
265	ANSI	American National Standards Institute
266	ANTM	America's Next Top Model
267	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
268	ANZ	Australia and New Zealand Banking Group
269	ANZAC	Australian and New Zealand Army Corps
270	AOD	Adrenalin O.D. (punk rock band)
271	AOI	Angle Of Incidence Arab Organization for Industrialization
272	AOL	America OnLine
273	AOR	Area of Responsibility
274	AOSTH	Adventures of Sonic the Hedgehog
275	AOTS	Attack of the Show!
276	AOU	American Ornithologists' Union
277	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
278	APB	All Points Bulletin (police jargon)
279	APEC	Asia Pacific Economic Cooperation
280	APEDS	AMSAA Performance Estimates Data System
281	APEX	Applied Physics Express
282	APHA	American Public Health Association
283	APHIS	Animal and Plant Health Inspection Service
284	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
285	APOD	Aerial Port (Airport) Of Debarkation
286	APOE	Aerial Port (Airport) Of Embarkation
287	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
288	APP	Allied Procedural Publication
289	APR	Annual Percentage Rate
290	AQIM	Al-Qaeda in the Islamic Maghreb
291	Ar	Argon
292	ARAG	Advanced Research and Assessment Group
293	ARB	Administrative Review Board
294	ARBA	Army Review Boards Agency
295	ARCA	Automobile Racing Club of America
296	ARCENT	United States Army Central Command
297	ARDA	Advanced Research and Development Activity (became DTO 2006)
298	ARF	ASEAN Regional Forum
299	ARG	Argentina (ISO 3166 trigram)
300	ARH	Armed Reconnaissance Helicopter
301	ARNet	Acquisition Reform Network
302	ARP	Applied Research Programme
303	ARPA	Advanced Research Projects Agency
304	ARRC	ACE Rapid Reaction Corps
305	ARRF	Allied Rapid Reaction Force
306	ARRL	American Radio Relay League
307	ARSC	Arctic Region Supercomputing Center
308	ARSPACE	U.S. Army Space Command
309	ARTCC	Air Route Traffic Control Center
310	AS	ActionScript
311	As	Arsenic
312	aS	Attosiemens
313	ASAP	As Soon As Possible
314	ASBO	Anti-Social Behaviour Order
315	ASCII	American Standard Code for Information Interchange
316	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
317	ASEAN	Association of Southeast Asian Nations
318	ASFAR	Americans for a Society Free of Age Restrictions
319	ASG	Area Support Group
320	ASN	Associate of Science in Nursing
321	ASPI	Australian Strategic Policy Institute
322	ASRAAM	Advanced Short-Range Air-to-Air Missile
323	ASSC	Association for the Scientific Study of Consciousness
324	AST	Atlantic Standard Time (UTC−4 hours)
325	ASTIA	Armed Services Technical Information Agency
326	ASTM	American Society for Testing and Materials
327	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
328	ASUW	AntiSUrface Warfare
329	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
330	ASW	AntiSubmarine Warfare
331	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
332	ASX	Advanced Stream Redirector,Australian Securities Exchange
333	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
334	At	Astatine
335	aT	Attotesla
336	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
337	ATAC	Air Transportable Acoustic Communications
338	ATACMS	Army TACtical Missile System
339	ATAPI	Advanced Technology Attachment Packet Interface
340	ATAS	Air-To-Air Stinger (missile)
341	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
342	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
343	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
344	ATCCIS	Army Tactical Command and Control Information System
345	ATESS	Aerospace and Telecommunications Engineering Support Squadron
346	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
347	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
348	ATGM	Anti-Tank Guided Missile
349	ATGW	Anti-Tank Guided Weapon
350	ATK	Attack
351	ATL	Atlanta,Georgia,the largest city and capital of Georgia
352	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
353	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
354	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
355	ATO	Air Tasking Order,Australian Taxation Office
356	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
357	ATSD	(U.S.) Assistant Secretary of Defense
358	ATSDR	Agency for Toxic Substances and Disease Registry
359	ATV	All-Terrain Vehicle
360	ATWA	Air,Trees,Water,Animals
361	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
362	Au	Gold (Latin Aurum)
363	AUS	Australia (ISO 3166 trigram)
364	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
365	Auslan	Australian Sign Language
366	AUT	Austria (ISO 3166 trigram)
367	AUTL	Army Universal Task List
368	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
369	Av	Aperture value (photographic mode)
370	aV	Attovolt
371	AVA	American Viticultural Area
372	AVB	Audio Video Bridging
373	AVDLR	Aviation Depot Level Repair
374	AVGP	Armoured Vehicle, General Purpose
375	AVIM	Aviation Intermediate Maintenance
376	AVLB	Armoured Vehicle Launched Body
377	AVM	Air Vice-Marshal, Arteriovenous malformation
378	AVO	Apprehended Violence Order
379	AVP	Arubaanse Volkspartij
380	AVP	Association of Volleyball Professionals
381	AVRE	Armoured Vehicle Royal Engineers
382	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
383	AVUM	Aviation Unit Maintenance
384	AVVO	Acute Vaginal Venereal Outbreak
385	AW	Aruba (ISO 3166 digram)
386	aW	Attowatt
387	AWA	American Wrestling Association
388	AWC	Air Warfare Centre
389	AWD	All Wheel Drive
390	AWE	Advanced Warfighting Experiment
391	AWP	Awaiting Parts (SM&R code)
392	AWSIM	Air Warfare SIMulation
393	AWST	Australian Western Standard Time
394	AWW	Above Water Warfare
395	AX	Åland Islands (ISO 3166 digram)
396	AXP	Ambulance eXchange Point
397	AY	Antarctica (FIPS 10-4 territory code)
398	AYBABTU	All Your Base Are Belong To Us
399	AYU	As Yet Unknown
400	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
401	AZE	Azerbaijan (ISO 3166 trigram)
402	AZUR	Actions en zone urbaine (French for: Urban Operations)
403	BAR	Barbados (IOC trigram,but not FIFA or ISO 3166),British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD , Binational Agricultural Research and Development fund (between the US and Israel),BARDA , Biomedical Advanced Research and Development Agency,BART , Bay Area Rapid Transit,BAS , Battalion Aid Station,BASE , Building,Antenna,Span,Earth (parachute from),BASF , Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory,a German chemicals company),BASIC , Beginner's All-purpose Symbolic Instruction Code (acronym was added later,originally it was simply Basic),BAT , Basic Aid Training,BATF , U.S. Bureau of Alcohol,Tobacco,and Firearms,BATS , Behavior Analysis Training System ,Bradley Advanced Training System,BATTeRS , Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit]
404	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
405	BBB	Better Business Bureau,Blood-brain barrier
406	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
407	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
408	BBN	Bolt,Beranek and Newman
409	BBQ	Barbecue
410	BBS	Breeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC , U.K. Biotechnology and Biological Sciences Research Council,BBVA , Banco Bilbao Vizcaya Argentaria (Spanish bank)
411	BBYO	B'nai B'rith Youth Organization
412	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
413	BCA	Bachelor of Computer Application,Black Coaches & Administrators
414	BCC	Blind Carbon Copy
415	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
416	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
417	BEL	Belgium (ISO 3166 trigram)
418	BEN	Benin (ISO 3166 trigram)
419	BEO	Banquet Event Order
420	BERC	Business Environmental Resource Center
421	BER	Bit Error Rate
422	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
423	BHR	Bahrain (ISO 3166 trigram)
424	BNF	Backus-Naur Form (computing), British National Formulary
425	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
426	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
427	BNS	Bank of Nova Scotia
428	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
429	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
430	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
431	BoAML	Bank of America Merrill Lynch
432	BOC	British Orthodontic Society, British Oxygen Company
433	BÖC	Blue Öyster Cult
434	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
435	BOFH	Bastard Operator From Hell
436	BOGA	Bend Over and Grab Ankles
437	BOGOF	Buy One,Get One Free
438	BOGs	Bunch of Guys
439	BOI	Balance Of Investment,Basis Of Issue
440	BOL	Bolivia (ISO 3166 trigram)
441	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
442	BOPD	Barrel of Oil Per Day
443	BOS	Battlefield Operating System
444	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
445	BP	Battle Position,British Petroleum (today,BP does not officially stand for anything),Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
446	BPV	Battlefield Planning Visualization,Bovine papillomavirus
447	BQ	British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire,Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code)
448	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
449	BRA	Brazil (ISO 3166 trigram)
450	BRAG	Bicycle Ride Across Georgia
451	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
452	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
453	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
454	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
455	BSoD	Blue Screen of Death (distinct from BSD)
456	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
457	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
458	BSW	British Standard Whitworth (screw thread)
459	BSX	Bendigo Stock Exchange
460	BTO	Built To Order
461	BTP	British Transport Police
462	BTU	British Thermal Unit
463	BTW	By The Way
464	BUAV	British Union for the Abolition of Vivisection
465	BUNO	Bureau Number (aircraft serial number)
466	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
467	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
468	BVD	Bradley,Voorhees & Day (underwear manufacturer)
469	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
470	BW	Bring Wedges (ISO digram)
471	BW	Botswana (ISO 3166 digram)
472	BWA	Botswana (ISO 3166 trigram)
473	BWARS	Bees,Wasps & Ants Recording Society
474	BWC	Biological and Toxin Weapons Convention
475	BWR	Boiling-Water Reactor
476	BX	Base eXchange
477	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
478	BYOC	Bring Your Own Computer (play on BYOB)
479	BYOF	Bring Your Own Flask
480	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
481	BYU	Brigham Young University
482	BZ	Belize (ISO 3166 digram)
483	BZP	Benzylpiperazine
484	C	Carbon, Coulomb, One Hundred (in Roman numerals)
485	c	Centi
486	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
487	c2c	the British rail company formerly known as LTS Rail
488	Ca	Calcium
489	CA	California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
490	CAA	Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association
491	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
492	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
493	CACM	Central American Common Market
494	CACM	Communications of the ACM
495	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
496	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
497	CADPAT	CAnadian Disruptive PATtern
498	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
499	CAEn	Close Action Engagement (constructive simulation)
500	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
501	CAFAD	Combined Arms For Air Defence
502	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
503	CAFE	Corporate Average Fuel Economy standard
504	CAI	Computer Assisted Instruction
505	CAIR	Council on American-Islamic Relations
506	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
507	CALL	Center for Army Lessons Learned
508	CALM	Communications,Air-interface,Long and Medium range
509	CalPERS	California Public Employees' Retirement System
510	Caltrans	California Department of Transpotation
511	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
512	CAMRA	CAMpaign for Real Ale
513	CAN	Canada (ISO 3166 trigram)
514	CANDU	CANada Deuterium Uranium (nuclear reactor design)
515	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
516	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
517	CARE	Citizens Association for Racial Equality (former New Zealand organisation),Community database on Accidents on the Roads in Europe,Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe)
518	CARMONETTE	Computerized Monte Carlo Simulation
519	CARP	Computed Air Release Point
520	CART	Championship Auto Racing Teams (now defunct)
521	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
522	CASA	Civil Aviation Safety Authority
523	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
524	CASS	Command Activated Sonobuoy System
525	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
526	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
527	CAT	Community Acceptance Testing
528	CATK	Counterattack
529	CATS	Computer Active Technology Suspension
530	CATT	Combined Arms Tactical Trainer
531	CAV	Cavalry
532	CAW	Canadian Auto Workers (trade union)
533	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
534	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
535	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
536	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
537	CBLA	Comparative bullet lead analysis
538	CBM	Canadian Baptist Ministries
539	CBM	Commodore Business Machines
540	CBML	Coalition Battle Management Language
541	CBN	CardsApp Brand Number
542	CBOL	Consortium for the Barcode of Life
543	CBOT	Chicago Board of Trade
544	CBR	Case-Based Reasoning
545	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
546	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
547	CBS	Columbia Broadcasting System,Corps Battle Simulation
548	CBUS	Columbus,Ohio
549	CC	carbon copy
550	CCA	Counter Command Activity
551	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
552	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
553	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
554	CCF	Cartoon Cartoon Fridays
555	CCG	Canadian Coast Guard,Collectible Card Game
556	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
557	CCGH	Canadian Coast Guard Hovercraft
558	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
559	CCH	Computer-Controlled Hostile
560	CCIF	Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee,merged with the CCIT in 1956 to form the CCITT)
561	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
562	CCIR	Comité consultatif international pour la radio (French for Consultative Committee on International Radio,became the ITU Radiocommunication Sector,ITU-R,in 1992),Commander's Critical Information Requirements
563	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
564	CCITT	Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee,became the ITU Telecommunication Standardization Sector,ITU-T,in 1992)
565	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
566	CCM	Canada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name,one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music
567	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
568	CCOP	Coalition Common Operating/Operational Picture
569	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
570	CCPA	Consumer Credit Protection Act
571	CCR	Creedence Clearwater Revival
572	CCRAp	Canadian Conservative Reform Alliance party
573	CCRP	Command and Control Research Program
574	CCRTS	Command and Control Research and Technology Symposium
575	CCSCS	Consultative Committee for Space Data Systems
576	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
577	CCSK	Cyclic Code Shift Keying
578	CCT	Current Commitments Team
579	Cd	Cadmium
580	cd	Candela
581	CD	Compact Disc
582	CD1	Cluster of Differentiation 1 (a small gene family)
583	CDA	UK Centre for Defence Analysis
584	CDD	Capabilities Development Document
585	CDE	Chemical Defence Equipment
586	CDipAF	Certified Diploma in Accounting and Finance
587	CDL	Commercial driver's license
588	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
589	CDMA	Code Division Multiple Access
590	CDMSII	Cryogenic Dark Matter Search II
591	Cdr	Commander
592	CDT	Central Daylight Time (UTC−5 hours)
593	Cdt	Commandant
594	Ce	Cerium
595	CE	Christian/Common Era
596	CEA	Campaign Effectiveness Analysis
597	CECOM	U.S. Army Communications and Electronics Command
598	CEI	Competitive Enterprise Institute
599	CENTCOM	United States Central Command
600	CENTO	Central Treaty Organization (Baghdad Pact)
601	CEO	Chief Executive Officer
602	CEP	Circular Error Probable
603	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
604	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
605	CERT	Computer Emergency Response Team
606	CESS	Centre for Earth Science Studies (India)
607	CEST	Central European Summer Time
608	CET	Central European Time
609	CEWC	Council for Education in World Citizenship
610	Cf	Californium
611	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
612	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
613	CFAR	Christine's,Federal Acquisition Regulation
614	CFC	ChloroFluoroCarbon,Canadian Fish Company
615	CFES	Continuous Flow Electrophoresis System
616	CFFZ	Call For Fire Zone
617	CFG	Context-free grammar,Control flow graph
618	CFHT	Canada-France-Hawaii Telescope
619	CFI	Center for Inquiry (CSICOP)
620	CFL	Canadian Football League,Co-ordinated Fire Line
621	CFLCC	Coalition Forces Land Component Command
622	CFM	Certified Facilities Manager
623	CFO	Chief Financial Officer
624	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
625	CFRP	Carbon fibre reinforced plastic
626	CFS	Chronic Fatigue Syndrome
627	CFSP	Common Foreign and Security Policy
628	CFU	Colony Forming Unit in Microbiology
629	CFV	Cavalry Fighting Vehicle
630	CFZ	Critical Friendly Zone
631	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
632	CGH	Comparative Genomic Hybridisation
633	CGIG	Cross-Government Implementation Group
634	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
635	CGS	Chief of the General Staff
636	CGT	Capital Gains Tax
637	ch	ch(L) is used to denote the Chern character of a line bundle
638	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
639	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
640	CHAOS	Cambridge Heart Anti-Oxidant Study
641	CHAPS	Clearing House Automated Payment System
642	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
643	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
644	CHI	Columbia Helicopters,Inc
645	CHiP	California Highway Patrol
646	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
647	CHL	Chile (ISO 3166 trigram)
648	CHLA	Core Historical Literature of Agriculture
649	CHN	China (ISO 3166 trigram)
650	CHOGM	Commonwealth Heads of Government Meeting
651	CHPSO	California Hospital Patient Safety Organization
652	CHRS	Canadian Heart Rhythm Society
653	CHT	Certified Hand Therapist
654	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
655	Ci	Curie
656	CIA	Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
657	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
658	CIB	Complete In Box (Internet auction/trading listings)
659	CIBC	Canadian Imperial Bank of Commerce
660	CID	Certified Interior Designer
661	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
662	CINC	Commander in Chief
663	CINEOS	Campo Imperatore Near-Earth Object Survey
664	CIPE	(European) Centre for International Political Economy
665	CIR	(Commander's) Critical Information Requirements
666	CIR	Corotating Interaction Region
667	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
668	CISA	(U.S.) C4I Integration Support Activity
669	CISB	Complete In Sealed Box (Internet auction/trading listings)
670	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
671	CISSP	Certified Information Systems Security Professional
672	CIV	Côte d'Ivoire (ISO 3166 trigram)
673	CIVPOP	Civilian Population
674	CIWS	Close-In Weapon System
675	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
676	CJC	Canadian Jewish Congress,Cold Junction Compensation
677	CJCS	Chairman of the Joint Chiefs of Staff
678	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
679	CJO	Chief of Joint Operations
680	CJTF	Combined Joint Task Force
681	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
682	CKA	commonly known as, Canada Kicks Ass
683	CKND	Codename: Kids Next Door
684	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
685	Cl	Chlorine
686	CLA	Clutterers Anonymous
687	CLEC	Competitive Local Exchange Carrier
688	CLEMARS	California Law Enforcement Mutual Aid Radio System
689	CLIC	Compact LInear Collider
690	CLO	Cornell Lab of Ornithology
691	CLOS	Command to Line-Of-Sight (missile control system)
692	CLPFC	CentroLateral PreFrontal Cortex
693	CLRP	College Loan Repayment Program
694	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
695	Cm	Curium
696	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
697	CMHC	Canada Mortgage and Housing Corporation
698	CMIIAW	Correct me if I am wrong
699	CMIS	Common management information service
700	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
701	CMM	Capability Maturity Model
702	CMMC	Corps Materiel Management Centre
703	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
704	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
705	CMP	Common [Operating/Operational] Maritime Picture
706	CMPD	Charlotte Mecklenburg Police Department
707	CMPD	Chronic Myeloproliferative Disease
708	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
709	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
710	CMT	Country Music Television
711	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
712	CMW	Marconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales,Australia),Chicago,Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit)
713	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
714	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
715	CNA	Center for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company),National (Fire Insurance Company),and American (Casualty Company),the three companies that merged to form what is now known as CNA Financial
716	CNBC	Consumer News and Business Channel
717	CND	Campaign for Nuclear Disarmament,Computer Network Defence
718	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
719	CNF	Cost and Freight
720	CNI	Clinical Nursing Intern
721	CNI	Communications,Navigation and Identification
722	CNN	Cable News Network,Cellular Nonlinear Network
723	CNV	Copy-Number Variable (genetics)
724	Co	Cobalt
725	COB	Close Of Business [day]
726	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
727	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
728	CoDA	Co-Dependents Anonymous
729	COGENT	Cognitive Objects within a Graphical EnviroNmenT
730	COIL	Chemical Oxygen Iodine Laser
731	COK	Cook Islands (ISO 3166 trigram)
732	COL	Colombia (ISO 3166 trigram)
733	COLA	Cost Of Living Adjustment
734	CONAD	U.S. Continental Air Defense Command
735	CONUS	Continental United States
736	COO	Chief Operating Officer
737	COPE	U.K. Committee On Publication Ethics
738	COPUS	U.K. Committee on the Public Understanding of Science
739	CORD	Common Operational Requirements Document
740	CORE	Consortium for Oceanographic Research and Education
741	COS	Cooper Ornithological Society
742	COSER	COoperative SERvice
743	CoT	Car of Tomorrow (former NASCAR race car design)
744	COTS	Commercial Off The Shelf
745	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
746	CPA	Certified Public Accountant
747	CPCU	Certified Property Casualty Underwriter
748	CPD	Capabilities Production Document
749	CPE	Certificate of Proficiency in English
750	CPE	Certified Professional Ergonomist
751	CPF	Calibration Parameter File,Canadian Patrol Frigate
752	CPG	Clinical Practice Guideline
753	CPIM	Certification on Production and Inventory Management
754	CPIR	Computationally-Private Information Retrieval
755	CPON	Certified Pediatric Oncology Nurse
756	CPPCC	Chinese People's Political Consultative Conference
757	CPR	Canadian Pacific Railway
758	CPR	Cardiopulmonary resuscitation
759	CPSM	Continuous Phase Shift Modulation
760	CPSU	Communist Party of the Soviet Union
761	CPT	Contingency Planning Team
762	CPU	Contract Postal Unit
763	CPV	Cape Verde (ISO 3166 trigram)
764	CPX	Command Post eXercise
765	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
766	Cr	Chromium
767	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
768	CRAM	Combined Radiometric Correction Model
769	CRD	Capstone Requirements Document
770	CREB	Cyclic AMP-response Element Binding (protein)
771	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
772	CREN	Christian Real Estate Network Real Estate Association
773	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
774	CRIPL	Consolidated Remain-In-Place List
775	CRM	Cardiac Rhythm Management,Customer Relationship Management
776	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
777	CRP	Committee for the Re-Election of the President,Control and Reporting Post
778	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
779	CRTC	Canadian Radio-television and Telecommunications Commission
780	Cs	Caesium
781	CSA	Canadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area,Czech Airlines,C/S/A,CINC,Service,and Agency
782	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
783	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
784	CSG	Corps Support Group
785	CSI	see entry
786	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
787	CSIP	Commercial Stable Image Platform (AMD)
788	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
789	CSL	U.K. Central Science Laboratory
790	CSPI	Center for Science in the Public Interest
791	CSR	Control Supply Rate
792	CSR	Corporate Social Responsibility
793	CSRC	Conflict Studies Research Centre
794	CSRF	Cross-Site Request Forgery
795	CST	Central Standard Time (UTC−6 hours)
796	CT	Computed tomography (medical scan also known as a CAT scan),Central Time zone,Chrono Trigger (Computer/Video games),Connecticut (postal symbol),Canterbury (postal symbol),Chhattisgarh (Indian state code)
797	CTBT	Comprehensive [Nuclear] Test Ban Treaty
798	CTDB	Compact Terrain Data Base (file format)
799	CTGF	connective tissue growth factor
800	CTI	Co-operative Target Identification
801	CTIL	Critical Tracked Items List
802	CTIS	Central Tire Inflation System
803	CTMS	Clinical Trial Management System
804	CTSS	Compatible Time-Sharing System
805	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
806	CTVT	Canine Transmissible Venereal Tumour
807	Cu	Copper (Latin Cuprum)
808	CUB	Cuba (ISO 3166 trigram)
809	CUCV	Commercial Utility Cargo Vehicle
810	CUPS	Common Unix Printing System
811	CUPW	Canadian Union of Postal Workers
812	CUREA	Consortium for Undergraduate Research and Education in Astronomy
813	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
814	CUW	Curaçao (ISO 3166 trigram)
815	CV	curriculum vitae (résumé)
816	CVLL	Crypto Variable Logic Label
817	CVSD	Continuous Variable Slope Delta (modulation)
818	CVT	Continuously Variable Transmission
819	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
820	CWC	Chemical Weapons Convention
821	CWRU	Case Western Reserve University
822	CWS	Canadian Wildlife Service
823	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
824	CXR	Christmas Island (ISO 3166 trigram)
825	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
826	CYM	Cayman Islands (ISO 3166 trigram)
827	CZE	Czech Republic (ISO 3166 trigram)
828	CZF	(Christian Zombie Fan)
829	CZMA	(US) Coastal Zone Management Act
830	d	Deci
831	D	Deuterium
832	DAFIF	Digital Aeronautical Flight Information File
833	DAK	Disney's Animal Kingdom
834	DAO	Division Ammunition Officer
835	DARE	Drug Abuse Resistance Education
836	DARO	(U.S.) Defense Airborne Reconnaissance Office
837	DARPA	U.S. Defense Advanced Research Projects Agency
838	DAS	Defensive Aids Suite
839	DASD	(U.S.) Deputy Assistant Secretary of Defense
840	DASL	Datapoint's Advanced Systems Language
841	DAU	(U.S.) Defense Acquisition University
842	DAWN	(U.S.) Drug Abuse Warning Network
843	dB	Decibel
844	DB	Deutsche Bahn
845	Db	Dubnium
846	DBA	De Bellis Antiquitatis (miniature wargaming rules)
847	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
848	DBDO	Desert BDO
849	DBE	Dame Commander of the Order of the British Empire
850	DBF	Detection By Fire (weapon launch signature)
851	DBR	De Bellis Renationis (miniature wargaming rules)
852	DBRA	Davis-Bacon Related Acts
853	DBS	Direct Broadcast Services (television)
854	DCAA	(U.S.) Defense Contract Audit Agency
855	DCAS	Devon and Cornwall Archery Society
856	DCC	Dallas Christian College
857	DCD	[Organ] Donation after Cardiac Death
858	DCE	Data Communication Equipment
859	DCFC	Death Cab for Cutie
860	DCL	Disney Cruise Line
861	DCN	Deacon
862	DCOM	Disney Channel Original Movie
863	DCSOPS	Deputy Chief of Staff for Operations and plans
864	DCW	Digital Chart of the World
865	DCYSC	Discovery Channel Young Scientist Challenge
866	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
867	DDA	Deputy District Attorney
868	DDN	U.S. Defense Data Network
869	DDS	Doctor of Dental Surgery
870	DEA	Drug Enforcement Administration
871	DEA	Drug Enforcement Agency
872	DeCA	(U.S.) Defense Commissary Agency
873	DEFCON	Defence readiness condition
874	DELT	Dual Ended Line Test (ing)
875	DEPSECDEF	(U.S.) Deputy Secretary of Defense
876	DERA	British Defence Evaluation and Research Agency (1995-2001)
877	DES	Deep Ecliptic Survey
878	DEU	Germany (ISO 3166 trigram)
879	DFAS	(U.S.) Defense Finance and Accounting Service
880	DFCB	Data Format Control Book
881	DfID	UK Department for International Development
882	DFM	Discrete Field Model see Superluminal motion
883	DFM	Dynamic Flowgraph Methodology
884	DFSP	Dermatofibrosarcoma protuberans
885	DfT	UK Department for Transport
886	DGPS	Differential GPS
887	DGZ	Desired Ground Zero
888	DHA	DocosaHexaenoic Acid
889	DHHS	(U.S.) Department of Health and Human Services
890	DHRA	(U.S.) DoD Human Resources Activity
891	DHS	U.S. Department of Homeland Security
892	DHSS	UK Department of Health and Social Security
893	DHTFYSS	U.S. Don't Have Time For You Silly S****
894	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
895	DIA	U.S. Defense Intelligence Agency
896	DIAC	Department of Immigration and Citizenship (Australia) [1]
897	DiC	Design Island Centre (computing usually used in a teaching situation)
898	DICASS	DIrectional Command Activated Sonobuoy System
899	DIFAR	DIrectional Frequency Analysis and Recording
900	DIME	Dense Inert Metal Explosive
901	DIP	Dual In-line Package (electronics)
902	DIPS	Defense independent pitching statistics
903	DIR	Defence Industrial Research
904	DISCOM	Division Support Command
905	DISE	Deployable Intelligence Support Element
906	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
907	DITY	Do-It-Yourself
908	DIVAD	Division Air Defence
909	DIY	Do It Yourself
910	DJI	Djibouti (ISO 3166 trigram)
911	DK	Denmark (ISO 3166 digram)
912	DL	Dexter's Laboratory
913	DLIC	Detachment Left-In-Contact
914	DLIR	Depot-Level Inspection and Repair
915	DLPMC	DorsoLateral PreMotor Cortex
916	DLRP	Data Link Reference Point
917	DLS	Deep Lens Survey
918	DLSA	(U.S.) Defense Legal Services Agency
919	DLSc	Diploma in Library Science
920	DLTBGYD	Don't let the bastards grind you down
921	DMC	(U.S.) Defense Management Council
922	DMCA	Digital Millennium Copyright Act
923	DMM	Digital Multimeter
924	DMOC	Distributed Mission Operations Centre
925	DMPA	(U.S.) Defense Medical Programs Activity
926	DMPFC	DorsoMedial PreFrontal Cortex
927	DMPK	Drug Metabolism and Pharmacokinetics
928	DMRB	Design Manual for Roads and Bridges
929	DMS	U.S. Defense Message System
930	DMSP	U.S. Defense Meteorological Satellite Program
931	DMT	Dimethyltryptamine
932	DMV	Department of Motor Vehicles
933	DMZ	DeMilitarized Zone
934	DN	Deacon
935	DNAW	Day Night All Weather
936	DNDi	Drugs for Neglected Diseases initiative
937	DNDO	U.S. Domestic Nuclear Detection Office
938	DNK	Denmark (ISO 3166 trigram)
939	DNM	Defence Nuclear Material
940	DNR	Do Not Resuscitate
941	DNS	Domain Name System
942	DOB	Date Of Birth
943	DOD	U.S. Department of Defense
944	DODAF	U.S. Department of Defense Architectural Framework
945	DoDD	U.S. Department of Defense Directive
946	DoDEA	(U.S.) Department of Defense Education Activity
947	DOE	U.S. Department of Energy
948	DOHC	Dual-OverHead-Cam engine
949	DOI	U.S. Department of the Interior
950	DORA	Defence of the Realm Act
951	DOS	Density of State
952	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
953	DotD	Deal of the Day (marketing gimmick)
954	DOW	Died of Wounds
955	DP	Division de production (Algerian petroleum company)
956	DPA	UK Defence Procurement Agency
957	DPCO	Double-Pole Change Over
958	DPDT	Double-Pole Double-Throw
959	DPI	Dots Per Inch
960	DPICM	Dual-Purpose Improved Conventional Munition
961	DPKO	UN Department for Peacekeeping Operations
962	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
963	DPPDB	Digital Point Positioning Database
964	DPRK	Democratic People's Republic of Korea
965	DPST	Double-Pole Single-Throw
966	DRC	Democratic Republic of the Congo
967	DRDC	Defence Research & Development Canada
968	DREA	Defence Research Establishment Atlantic (obsolete 2002)
969	DRES	Defence Research Establishment Suffield (obsolete 2002)
970	DRET	Defence Research Establishment Toronto (obsolete 2002)
971	DREV	Defence Research Establishment Valcartier (obsolete 2002)
972	DRIC	(U.S.) Defense Research Information Center
973	DRMS	(U.S.) Defense Revitalization and Marketing Service
974	DRPR	Drawing Practices
975	DRT	Document Related Technologies
976	Ds	Darmstadtium
977	DSAS	Disney Sing Along Songs
978	DSB	(U.S.) Defense Science Board
979	DSCS	U.S. Defense Satellite Communications System
980	DSCSOC	DSCS Operations Center
981	DSE	Dry Sheep Equivalent
982	DSG	Direct-Shift Gearbox
983	DSID	Dismounted Soldier Identification System
984	DSL	Digital Subscriber Line
985	DSLR	Digital single-lens reflex (camera)
986	DSM	Diagnostic and Statistical Manual of Mental Disorders
987	DSN	Deep Space Network
988	DSPL	Design Specialists and Plans Language
989	DSR	Deformed Special Relativity
990	DST	Daylight Saving Time
991	DSTL	British Defence Science and Technology Laboratory
992	DSWA	(U.S.) Defense Special Weapons Agency
993	DTA	Dental Technologists Association
994	DTD	Digital Terrain Data
995	DTG	Date-Time Group
996	DTH	Direct To Home (television)
997	DTI	UK Department of Trade and Industry
998	DTIC	(U.S.) Defense Technical Information Center
999	DTL	Diode-Transistor Logic (electronics)
1000	DTMF	Dual-tone multi-frequency signaling
1001	DTO	Disruptive Technology Office (was ARDA)
1002	DTR	Determine The Relationship
1003	DTSA	(U.S.) Defense Technology Security Administration
1004	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1005	DUSD	(U.S.) Deputy Under-Secretary of Defense
1006	DVLC	UK Driver and Vehicle Licencing Centre
1007	DVM	Doctor of Veterinary Medicine
1008	DVO	Direct View Optics
1009	DVOM	Digital Volt-Ohm Meter
1010	DVP	various meanings (disambiguation page)
1011	DW	Drum Workshop
1012	DWIM	Do What I Mean
1013	DWM	Doctor Who Magazine
1014	DWTS	Dancing with the Stars
1015	DWW	Down with Webster
1016	DXA	Dual-energy X-ray Absorptiometry
1017	DXM	DeXtroMethorphan
1018	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1019	Dy	Dysprosium
1020	DZA	Algeria (ISO 3166 trigram)
1021	E	East
1022	EABU	Explain Acronyms Before Use
1023	EAC	Echelons Above Corps
1024	EAPC	Euro-Atlantic Partnership Council
1025	EAST	Experimental Advanced Superconducting Tokamak
1026	EBD	Electronic Brake Distribution
1027	EBE	Extraterrestrial Biological Entity
1028	EBSA	Employee Benefits Security Administration
1029	EBW	Electron Beam Welding
1030	EBW	Exploding BridgeWire
1031	ECASS	European Centre for Analysis in the Social Sciences [1]
1032	ECBR	European Coalition for Biomedical Research
1033	ECCM	Electronic Counter-Counter-Measures
1034	ECFS	Electronic Case Filing System
1035	ECG	Electrocardiogram
1036	ECHR	European Convention on Human Rights
1037	ECJ	European Court of Justice
1038	ECL	Emitter Coupled Logic (electronics)
1039	ECommHR	European Commission on Human Rights
1040	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1041	ECT	ElectroConvulsive Therapy
1042	ECtHR	European Court of Human Rights
1043	EDA	European Defence Agency
1044	EDAC	Error Detection And Correction
1045	EDCS	Environmental Data Coding Specification
1046	EDH	Eastman Dental Hospital
1047	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1048	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1049	EEC	European Economic Community (predecessor of the EU)
1050	EEG	ElectroEncephaloGram
1051	EENT	End Evening Nautical Twilight
1052	EEO	Equal Employment Opportunity
1053	EEOC	(U.S.) Equal Employment Opportunity Commission
1054	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1055	EFF	Electronic Frontier Foundation
1056	EFL	English as a Foreign Language
1057	EFM	Enterprise Feedback Management
1058	EFOA	European Fuel Oxygenates Association
1059	EFSA	European Food Safety Authority
1060	EFT	Electronic Fund Transfer
1061	EFV	Expeditionary Fighting Vehicle
1062	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1063	EGCG	EpiGalloCatechin-3-Gallate
1064	EGIS	Erieye Ground Interface Segment
1065	EGRET	Energetic Gamma-Ray Experiment Telescope
1066	EGY	Egypt (ISO 3166 trigram)
1067	EHF	Extremely High Frequency
1068	EHR	Equipment History Record
1069	Ei	Exbi
1070	EI	Ireland (FIPS 10-4 country code; from Éire)
1071	EIA	Environmental Impact Assessment
1072	EIAH	Encyclopedia of Iranian Architectural History
1073	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1074	EIC	East India Company
1075	EICS	East India Company's Service
1076	eID	electronic ID
1077	EIRP	Effective Isotropic Radiated Power
1078	EIS	Environmental Impact Statement
1079	EJ	Exajoule
1080	EKG	Electrocardiogram (from German Elektrokardiogramm)
1081	EKMS	Electronic Key Management System
1082	EL	Exalitre
1083	ELINT	Electronic Intelligence
1084	ELL	English Language Learner
1085	ELM	Edge-Localised Mode (plasma physics)
1086	ELO	Electric Light Orchestra
1087	ELSS	Emergency Life Support Stores
1088	EM	ElectroMagnetism/ElectroMagnetic
1089	Em	Exametre
1090	EMA	European Medicines Agency
1091	EMCON	(Electromagnetic) Emissions Control
1092	EMDG	Euro-Missile Dynamics Group
1093	EMDR	Eye Movement Desensitisation and Reprocessing
1094	EMEA	Europe,Middle East and Africa
1095	EMG	ElectroMyoGraph
1096	EMP	ElectroMagnetic Pulse
1097	EMS	Emergency Medical Services
1098	EMT	Emergency Medical Technician
1099	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1100	ENE	East North-East
1101	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1102	ENTEC	Euro NATO Training Engineer Centre
1103	ENVL	Envelope
1104	ENY	Enemy
1105	EOD	Explosive Ordnance Disposal
1106	EOG	ElectroOculoGraphy
1107	EOM	End of Message
1108	EOSAT	Earth Observation Satellite
1109	EOSDIS	Earth Observation Satellite Data and Information System
1110	EP	European Parliament
1111	EP	Extended play
1112	EPCOT	Experimental Prototype Community Of Tomorrow
1113	EPGS	EOS Polar Ground Sites
1114	EPIRB	Emergency Position Indicating Radio Beacon
1115	EPL	English Premier League
1116	EPOS	Electronic Point Of Sale
1117	EPPA	Employee Polygraph Protection Act
1118	EPR	European Pressurised [Nuclear] Reactor
1119	EQ	Emotional Quotient
1120	Er	Erbium
1121	ERCIM	European Research Consortium for Informatics and Mathematics
1122	ERI	Eritrea (ISO 3166 trigram)
1123	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1124	EROS	Earth Resources Observation System
1125	ERP	Engineer Regulating Point
1126	ERR	Eesti Rahvusringhääling
1127	ERS	Earth Resources Survey
1128	ERTS	Earth Resources Technology Satellite (became Landsat)
1129	ERV	Endogenous RetroVirus
1130	ESD	ElectroStatic Discharge
1131	ESDP	European Security and Defence Policy
1132	ESE	East South-East
1133	ESH	Western Sahara (ISO 3166 trigram)
1134	ESL	English as a Second Language
1135	ESM	Electronic warfare Support Measures
1136	ESO	European Southern Observatory
1137	ESOL	English for Speakers of Other Languages
1138	ESPN	Entertainment and Sports Programming Network
1139	ESU	Emergency Services Unit
1140	ESV	Engineer Support Vehicle
1141	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1142	ETH	Ethiopia (ISO 3166 trigram)
1143	ETI	Extra-Terrestrial Intelligence
1144	ETLA	Extended TLA
1145	ETT	Embedded Training Team
1146	Eu	Europium
1147	EUCOM	(U.S.) European Command
1148	EUUSA	European Union and United States of America
1149	EV	Exavolt
1150	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1151	EWTN	Eternal Word Television Network
1152	Exatesla	Extra Terrestrial
1153	EXREP	Expeditious Repair (SM&R code)
1154	f	Femto
1155	fA	Femtoampere
1156	FA	Food Addicts in Recovery Anonymous
1157	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1158	FAAD	Forward Area Air Defence
1159	FAADEZ	Forward Area Air Defence Engagement Zone
1160	FAAFP	Fellow of the American Academy of Family Physicians
1161	FAAN	Fellow of the American Academy of Neurology
1162	FAAN	Fellow of the American Academy of Nursing
1163	FAAQ	Frequently Asked and Anticipated Questions
1164	FAASV	Field Artillery Ammunition Supply Vehicle
1165	FAB	Feline Advisory Bureau (UK feline charity)
1166	FACA	(US) Federal Advisory Committee Act
1167	FACH	Fuerza Aérea de Chile
1168	FACN	Fellow of the American College of Nutrition
1169	FACP	Fellow of the American College of Physicians
1170	FACTS	Flexible Alternating Current Transmission System
1171	FAM	Foreign Affairs Manual
1172	FAO	Food and Agriculture Organization
1173	FAPA	Fellow of the American Psychological Association
1174	FAPHA	Fellow of the American Public Health Association
1175	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1176	FASCAM	Family of Scatterable Mines[1]
1177	FASD	Fetal Alcohol Spectrum Disorder
1178	FASEB	Federation of American Societies for Experimental Biology
1179	FAT	Field Artillery Tractor
1180	FAVS	Future Armoured Vehicle System
1181	FAW	Football Association of Wales
1182	FBCS	Fellow of the British Computer Society
1183	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1184	FBIS	Foreign Broadcast Information Service
1185	FBM	Board foot
1186	fC	Femtocoulomb
1187	FCC	U.S. Federal Communications Commission
1188	FCE	First Certificate in English
1189	FCF	Financial Free Cash Flow
1190	FCLA	Fraud Claims Law Associate
1191	FCO	UK Foreign and Commonwealth Office
1192	FCW	Florida Championship Wrestling
1193	FD	Falun Dafa
1194	FDA	Food and Drug Administration (U.S.)
1195	FDBK	(I) Feedback
1196	Fe	Iron (Latin Ferrum)
1197	FEAST	Forum for European-Australian Science and Technology Cooperation
1198	FEATS	Festival of European Anglophone Theatrical Societies link title
1199	FEBA	Forward Edge of the Battle Area
1200	FED	Field Emission Display
1201	FEDEP	Federation Development Process (Simulation)
1202	FEF	Frontal Eye Field (neurophysiology)
1203	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1204	FENS	Federation of European Neuroscience Societies
1205	FES	Flywheel Energy Storage
1206	FEST	Frankfurt English Speaking Theatre link title
1207	FET	Field-effect transistor
1208	FEZ	Fighter Engagement Zone
1209	fF	Femtofarad
1210	FF	Final Fantasy
1211	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1212	FFC	Free For Chat
1213	FFE	Fukuoka Futures Exchange
1214	FFF	Fédération française de football (French for: French Football Federation)
1215	FFG	Guided Missile Frigate (hull classification symbol)
1216	FFOV	Forward Field Of View
1217	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1218	FFS	For Fuck's Sake
1219	FFT	Final Fantasy Tactics
1220	FG	Falun Gong
1221	fg	Femtogram
1222	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1223	FGOTUS	First Gentleman of the United States
1224	FGR	Flickr Group Roulette
1225	fH	Femtohenry
1226	FHFIF	Foster's Home for Imaginary Friends
1227	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1228	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1229	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1230	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1231	FIBUA	Fighting In Built-Up Areas
1232	FIC	Fellowship for Intentional Community
1233	FID	Foreign Internal Defence
1234	FIE	Fly-In Echelon
1235	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1236	FIFe	Fédération internationale féline (French for: International Feline Federation)
1237	FIFO	First In, First Out
1238	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1239	FIGJAM	Fuck I'm Good, Just Ask Me
1240	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1241	FIN	Finland (ISO 3166 trigram)
1242	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1243	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1244	FIS	Fédération internationale de ski (French for: International Ski Federation)
1245	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1246	FISH	Fluorescence In-Situ Hybridisation
1247	FiST	Fire Support Team
1248	FITS	Flexible Image Transport System
1249	FIU	Florida International University
1250	fJ	Femtojoule
1251	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1252	FJI	Fiji (ISO 3166 trigram)
1253	FJN	Financial Job Network
1254	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1255	fK	Femtokelvin
1256	FKSM	Fort Knox Supplemental Manual
1257	FKT	Fastest Known Time
1258	fL	Femtolitre
1259	FL	Florida (postal symbol)
1260	fl	floruit (Latin for: living) (genealogy)
1261	FLA	Florida,Front Line Assembly,Future Large Aircraft
1262	FLAB	Four-letter abbreviation
1263	FLAC	Free Legal Advice Centres
1264	FLAC	Free Lossless Audio Codec
1265	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1266	FLB	Forward Logistics Base
1267	FLET	Forward Line of Enemy Troops
1268	FLG	Falun Gong
1269	FLIP	Flight Information Publication
1270	FLIR	Forward Looking InfraRed (sensor)
1271	FLK	Falkland Islands (ISO 3166 trigram)
1272	FLOT	Forward Line of Own Troops
1273	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1274	FLQ	Free Legal Questions
1275	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1276	FLSA	Fair Labor Standards Act
1277	FLTSAT	Fleet Satellite
1278	FLTSATCOM	Fleet Satellite Communication System
1279	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1280	FM	Factory Mutual
1281	FM	Federal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code),Field Manual,Flight Manager,Frequency Modulation (electronics)
1282	fm	Femtometre
1283	Fm	Fermium
1284	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1285	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1286	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1287	FMCG	Fast Moving Consumer Goods
1288	FME	Formal Methods Europe
1289	FMECA	Failure Modes and Effect Criticality Analysis
1290	FMJD	Fédération Mondiale du Jeu de Dames
1291	FMLA	Family Medical Leave Act
1292	FoE	Friends of the Earth
1293	FOGC	Federal Oil and Gas Council
1294	FOH	Front Of House
1295	FOIA	Freedom of Information Act
1296	FOM	Federation Object Model
1297	FONSI	Finding of No Significant Impact
1298	FOO	Forward Observation Officer
1299	FOOP	Friends Of Organ Pipes (Volunteer group)
1300	FoS	Family of Systems
1301	FOSE	Fallout 3 Script Extender
1302	FOSE	Federal Office Systems Expo
1303	FOT	Free on truck
1304	FOTA	Fellow of the Orthodontic Technicians Association
1305	FOTC	Flight of the Conchords
1306	FOUO	For Official Use Only
1307	FP	French Polynesia (FIPS 10-4 territory code)
1308	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1309	FPS	Fire Prevention System
1310	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1311	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1312	Fr	Francium
1313	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1314	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1315	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1316	FRICBM	Full Range ICBM
1317	FRO	Faroe Islands (ISO 3166 trigram)
1318	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1319	FRSA	Fellow of the Royal Society of Art
1320	FRY	Federal Republic of Yugoslavia
1321	fs	Femtosecond
1322	fS	Femtosiemens
1323	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1324	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1325	FSCL	Fire Support Co-ordination Line
1326	FSE	Fire Support Element
1327	FSF	Free Software Foundation
1328	FSH	Follicle Stimulating Hormone
1329	FSI	Fuel Stratified Injection
1330	FSS	Fire Support Station
1331	FSSP	Families of Structurally Similar Proteins
1332	FSTC	Foreign Science Technology Center (now NGIC)
1333	fT	Femtotesla
1334	FTC	Federal Trade Commission
1335	FTE	Full Time Equivalent
1336	FTL	Faster Than Light
1337	FTS	Flight Termination System used during some rocket launches
1338	FTS	Fuck That Shit
1339	FU	Smoke (METAR Code)
1340	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1341	fV	Femtovolt
1342	fW	Femtowatt
1343	FW	Forward
1344	FWC	Football World Cup
1345	FWF	Fixed Word Format
1346	FWI	French West Indies
1347	FWIW	For What It's Worth
1348	FWS	U.S. Fish and Wildlife Service
1349	FWT	Fresh Water Tank
1350	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1351	FYA	For Your Agenda
1352	FYDP	Five-Year Defense Plan (U.S.)
1353	FYI	For Your Information
1354	FYROM	Former Yugoslav Republic of Macedonia
1355	FZDZ	Freezing Drizzle (METAR Code)
1356	FZFG	Freezing Fog (METAR Code)
1357	FZRA	Freezing Rain (METAR Code)
1358	g	Gram
1359	G3	Heckler & Koch G3
1360	GAAR	General Anti-Avoidance Rule (tax evasion)
1361	GAB	Gabon (ISO 3166 trigram)
1362	GABA	Gamma-AminoButyric Acid
1363	GAD	Generalized Anxiety Disorder
1364	GAF	Garfield and Friends
1365	GAO	U.S. Government Accountability Office
1366	GAW	Global Atmospheric Watch
1367	GBBC	Great (Global) Backyard Bird Count
1368	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1369	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1370	GCA	Graduate in Claims Administration
1371	GCD	see entry
1372	GCF	Greatest Common Factor
1373	GCI	Ground-controlled interception
1374	GCN	Gamma-ray burst Coordination Network
1375	GCS	Global Coordinate System
1376	GCSE	General Certificate of Secondary Education (UK)
1377	Gd	Gadolinium
1378	GD	Grenada (ISO 3166 digram)
1379	GDL	Game Definition Language
1380	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1381	GDR	German Democratic Republic (cf. DDR)
1382	GDW	Game Designers Workshop
1383	Ge	Germanium
1384	GEBCO	General Bathymetric Chart of the Oceans
1385	GEC	Great Engineering Challenge
1386	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1387	GEEP	Geophysical Equipment Exploration Platform
1388	GEN	Full General (four stars) in the U.S. Army
1389	GeV	Gigaelectron-volt
1390	GEV	Ground Effect Vehicle
1391	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1392	GFI	Ground Fault Interruptor (aka GFCI)
1393	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1394	GFN	Global Footprint Network
1395	GG	Georgia (FIPS 10-4 country code)
1396	GGK	Good God Karma
1397	GHA	Ghana (ISO 3166 trigram)
1398	GHB	gamma-Hydroxybutyric acid
1399	Gi	Gibi
1400	GIB	Gibraltar (ISO 3166 trigram)
1401	GIG	Global Information Grid
1402	GINO	Godzilla In Name Only
1403	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1404	GJD	Geocentric Julian Day
1405	GLAAD	Gay and Lesbian Alliance Against Defamation
1406	GLAC	General Ledger Accounting Code
1407	GLAST	Gamma-ray Large Area Space Telescope
1408	GLBA	Gramm-Leach-Bliley Act
1409	GLC	Gas-liquid chromatography
1410	GLP	Guadeloupe (ISO 3166 trigram)
1411	GLV	Gained Life Value
1412	Gm	Gigametre
1413	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1414	GMAC	General Motors Acceptance Corporation,the original name of the company now known as Ally Financial,Graduate Management Admission Council,G-MAC,Great Midwest Athletic Conference
1415	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1416	GMFSC	Ground Mobile Forces Satellite Communications
1417	GMO	Genetically Modified Organism
1418	GMPCS	Global Mobile Personal Communications by Satellite
1419	GNAS	Grand National Archery Society
1420	GNB	Guinea-Bissau (ISO 3166 trigram)
1421	GNP	Gross National Product
1422	GNQ	Equatorial Guinea (ISO 3166 trigram)
1423	GnRH	Gonadotropin-Releasing Hormone
1424	GO	Glorioso Islands (FIPS 10-4 territory code)
1425	GOA	General of the Army (United States only)
1426	GOAT	Greatest Of All Time
1427	GOC	General Officer Commanding
1428	GOES	Geostationary Operational Environmental Satellite
1429	GOP	Grand Old Party
1430	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1431	GOSC	General Officer Steering Committee
1432	GOSH	Great Ormond Street Hospital
1433	GOSP	Gas/Oil Separation Plant
1434	GOTS	Government off-the-shelf
1435	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1436	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1437	GPA	Grade Point Average
1438	GPC	Global Path Cache
1439	GPIB	General-Purpose Instrumentation/Interface Bus
1440	GPO	General Post Office
1441	GPPC	Genetics and Public Policy Center
1442	GPR	Ground-Penetrating Radar
1443	GPS	General Problem Solver,Global Positioning System
1444	GPT	General Purpose Technology, Get paid to surf (an online business model)
1445	GQ	Equatorial Guinea (ISO 3166 digram),Gentlemen's Quarterly (the original name of the magazine now known simply as GQ),Guam (FIPS 10-4 territory code),GR[edit]
1446	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1447	GRAIL	Gravity Recovery and Interior Laboratory
1448	GRAS	Generally recognized as safe (FDA list)
1449	GRB	Gamma-Ray Burst
1450	GRC	Greece (ISO 3166 trigram)
1451	GRD	Grenada (ISO 3166 trigram)
1452	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1453	grep	[search] Globally for Regular Expression,Print [lines]
1454	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1455	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1456	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1457	GRL	Greenland (ISO 3166 trigram)
1458	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1459	Gs	Gigasecond
1460	GSA	U.S. General Services Administration
1461	GSD	Graphical Situation Display
1462	GSGB	(God send glamour boy 9-10/10)
1463	GSK	GlaxoSmithKline [good sexual karma]
1464	GSN	Game Show Network
1465	GSO	General Services Officer (U.S. Department of State)
1466	GSOH	Good Sense Of Humour
1467	GSP	Georges St-Pierre (Canadian MMA fighter)
1468	GSR	Gun Shot Residue
1469	GSS	Generic Security Services
1470	GSW	Gunshot wound
1471	GTD	Getting Things Done
1472	GTG	Got To Go (Internet chat)
1473	GTGN	Getty Thesaurus of Geographic Names
1474	GTK	Good To Know (Internet chat)
1475	GTM	Guatemala (ISO 3166 trigram)
1476	GU	Guam (postal symbol; ISO 3166 digram)
1477	GUF	French Guiana (ISO 3166 trigram)
1478	GUILT	Gangliated Utrophin Immuno Latency Toxin
1479	GULCR	Grupo de Usuarios de Linux de Costa Rica
1480	GUT	Grand Unification Theory
1481	GWARS	Ground Warfare System (simulation)
1482	GWAS	Grand Western Archery Society
1483	GWOT	Global War on Terrorism
1484	GXE	Gene-enivronment interaction
1485	GXM	Matrox Graphics eXpansion Module
1486	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1487	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1488	h	Hecto
1489	HAARP	High Frequency Active Auroral Research Program
1490	HAART	Highly Active Anti-Retroviral Therapy
1491	HAI	Human Awareness Institute
1492	HAL	Hardware Abstraction Layer
1493	HALO	High Altitude Low Opening (parachute jump)
1494	HAM	Amateur radio operator
1495	HANS	Head And Neck Support (device used in many race cars)
1496	HARM	High-speed Anti-Radiation Missile
1497	HAW	Heavy Antitank Weapon
1498	HAWK	Homing All the Way Killer (air defence system)
1499	HAZ	Heat-Affected Zone
1500	HAZMAT	Hazardous Materials
1501	HBCD	HexaBromoCycloDodecane
1502	HBO	Home Box Office
1503	HBR	Harvard Business Review
1504	HBT	Heterojunction Bipolar Transistor
1505	HBV	Hepatitis B Virus
1506	HCCI	Homogeneous Charge Compression Ignition
1507	HCF	Highest Common Factor
1508	HCSC	Higher Command and Staff Course
1509	HDL	High-Density Lipoprotein
1510	HDM	Human Decision-Making
1511	HDRA	Henry Doubleday Research Association
1512	He	Helium
1513	HE	High Explosive
1514	HEAT	High Explosive Anti-Tank (ammunition)
1515	HEBA	Hellenic Basketball Clubs Association
1516	HEER	High-Explosive Extended Range (ammunition)
1517	HEIC	Honourable East India Company
1518	HEMP	High-Altitude Electromagnetic Pulse
1519	HEOSS	High Earth Orbit Space Surveillance
1520	HEP	High-Explosive Plastic (ammunition)
1521	HEPA	High-Efficiency Particulate Air (filter)
1522	HESV	Heavy Engineering Support Vehicle
1523	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1524	HEU	Highly Enriched Uranium
1525	Hf	Hafnium
1526	HF	High Frequency
1527	HFE	Human Fertilisation and Embryology (UK Act)
1528	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1529	HFEA	Human Fertilisation and Embryology Authority (UK)
1530	Hg	Mercury (Latin Hydrargyrum)
1531	HGC	UK Human Genetics Commission
1532	HGF	Human Growth Factor
1533	HGTV	Home & Garden Television
1534	HI	Hawaii (postal symbol)
1535	HIH	His (or Her) Imperial Highness
1536	HIM	His (or Her) Imperial Majesty
1537	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1538	HIMEZ	High Altitude Missile Engagement Zone
1539	HIMYM	How I Met Your Mother
1540	HIPAA	U.S. Health Insurance Portability and Accountability Act
1541	Hipparcos	HIgh Precision Parallax COllecting Satellite
1542	Hird	Hurd of interfaces representing depth (cf. HURD)
1543	HiRISE	High Resolution Imaging Science Experiment
1544	HIT	Health Information Technology
1545	HIV	Human Immunodeficiency Virus
1546	HIWT	Hobart Institute of Welding Technology
1547	HJD	Heliocentric Julian Day
1548	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1549	HKG	Hong Kong (ISO 3166 trigram)
1550	HKS	HyperKinetic Syndrome
1551	hL	Hectolitre
1552	HL	Holding Line
1553	HLL	High-Level Language
1554	HLN	Headline News
1555	HLOS	High Level Output Specification
1556	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1557	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1558	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1559	HMF	HydroxyMethyl Furfural
1560	HMO	Health maintenance organization
1561	HMP	Her Majesty's Prison
1562	HMRC	Her/His Majesty's Revenue and Customs
1563	HMSO	Her Majesty's Stationery Office
1564	HMV	His Master's Voice
1565	HN	Honduras (ISO 3166 digram)
1566	HND	Honduras (ISO 3166 trigram)
1567	Ho	Holmium
1568	HO	Honduras (FIPS 10-4 country code)
1569	HOLLAND	Hope Our Love Lasts And Never Dies
1570	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1571	HOT	Highly Optimised Tolerance
1572	HOTAS	Hands on throttle-and-stick
1573	HOV	High Occupancy Vehicle
1574	hp	horse power
1575	HPA	UK Health Protection Agency
1576	HPCL	Hindustan Petroleum Corporation Limited
1577	HPLC	High Performance Liquid Chromatography
1578	HPT	High[er] Payoff Target
1579	HPV	Human Papilloma Virus
1580	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1581	HRD	Human Resource Development
1582	HRF	High iness Forces
1583	HRH	His (or Her) Royal Highness
1584	HRM	His (or Her) Royal Majesty
1585	HRM	Human Resource Management
1586	HRT	Hormone Replacement Therapy
1587	Hs	Hassium
1588	HSBC	The Hong Kong and Shanghai Banking Corporation
1589	HSC	Higher School Certificate
1590	HSM	High School Musical
1591	HSMAD	Human Science/Modeling and Analysis Data
1592	HSN	Home Shopping Network
1593	HSPH	Harvard School of Public Health
1594	HSSI	High-Speed Serial Interface
1595	HST	see entry
1596	HTA	HyperText Application
1597	HTFU	Harden The Fuck Up
1598	HTH	Hope That Helps
1599	HTI	Haiti (ISO 3166 trigram)
1600	HTML	HyperText Markup Language
1601	HTR	Heated Towel Rail
1602	HTS	High-Temperature Superconducting wire
1603	HTTP	HyperText Transfer Protocol
1604	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1605	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1606	HUN	Hungary (ISO 3166 trigram)
1607	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1608	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1609	HVAP	High Velocity Armour Piercing (ammunition)
1610	HVHF	High velocity human factors
1611	HVM	High Velocity Missile
1612	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1613	HWM	Hardware morphing (computer graphics rendering)
1614	HXB	The glycoprotein Tenascian C
1615	HZ	Haze (METAR Code)
1616	Hz	Hertz
1617	IA	Iowa (postal symbol)
1618	IAAL	I Am A Lawyer
1619	IAB	International Association for Biologicals
1620	IAD	Ion Assisted Deposition
1621	IADS	Integrated Air Defence System
1622	IAEA	International Atomic Energy Agency
1623	IAF	{i} Industrial Areas Foundation
1624	IAFG	Information Assurance Focus Group
1625	IANA	Internet Assigned Numbers Authority
1626	IANAL	I Am Not A Lawyer
1627	IAS	Image Assessment System
1628	IASIP	It's Always Sunny in Philadelphia
1629	IATA	International Air Transport Association
1630	IATF	International Automotive Task Force
1631	IATSE	International Alliance of Theatrical Stage Employees
1632	IAUC	International Astronomical Union Circular
1633	IAW	In Accordance With
1634	IB	International Baccalaureate
1635	IBA	Important Bird Area
1636	IBD	Inflammatory Bowel Disease
1637	IBDM	Information Based Decision Making
1638	IBM	International Business Machines
1639	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1640	IBS	Irritable Bowel Syndrome
1641	ICANN	Internet Corporation for Assigned Names and Numbers
1642	ICAO	International Civil Aviation Organization
1643	ICBM	Intercontinental Ballistic Missile
1644	ICBN	International Code of Botanical Nomenclature
1645	ICE	In case of emergency
1646	ICES	International Council for the Exploration of the Sea
1647	ICF	Intelligent Community Forum
1648	ICMP	Internet Control Message Protocol
1649	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1650	ICO	Intermediate Circular Orbit
1651	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1652	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1653	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1654	ICRL	Individual Component Repair List
1655	ICRS	International Celestial Reference System
1656	ICSI	Intracytoplasmic Sperm Injection
1657	ICT	Information and communication technologies
1658	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1659	ICV	Infantry Carrier Vehicle
1660	ICYMI	In Case You Missed It
1661	IDC	International Data Corporation
1662	IDDI	I don't do initialisms (see irony)
1663	IDGAF	I don't give a fuck
1664	IDK	I don't know
1665	IDL	Interface Definition Language
1666	IDN	Indonesia (ISO 3166 trigram)
1667	IEA	International Energy Agency
1668	IEC	International Electrotechnical Commission
1669	IED	Improvised Explosive Device
1670	IELTS	International English Language Testing System
1671	IER	Information Exchange Requirement
1672	IET	Initial Entry Training
1673	IET	Institution of Engineering and Technology
1674	IETF	Internet Engineering Task Force
1675	IEW	Intelligence and Electronic Warfare
1676	IFAB	International Football Association Board
1677	IFAH	International Federation for Animal Health
1678	IFAP	International Federation of Agricultural Producers
1679	IFO	Identified Flying Object (see also UFO)
1680	IFOV	Instantaneous Field of View
1681	IFPI	International Federation of Phonographic Industries
1682	IFRB	International Frequency Registration Board
1683	IFV	Infantry Fighting Vehicle
1684	IG	Inspector General
1685	IGNOU	Indira Gandhi National Open University
1686	IGS	International Ground Station
1687	IHH	Idiopathic Hypogonadotropic Hypogonadism
1688	IHO	International Hydrographic Organization
1689	IHR	Institute for Historical Review
1690	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1691	II	Two (in Roman numerals)
1692	IICA	Inter-American Institute for Cooperation on Agriculture
1693	IIE	Innovative Interstellar Explorer
1694	III	Three (in Roman numerals)
1695	IIRC	If I Recall/Remember Correctly
1696	IISS	International Institute for Strategic Studies
1697	IJN	Imperial Japanese Navy (World War II)
1698	IJWP	Interim Joint Warfare Publication
1699	ILDS	Improved Landmine Detection System
1700	ILO	International Labour Organization
1701	ILRI	International Livestock Research Institute
1702	ILY	I Love You [pronounced ILL-LEE]
1703	IMBD	International Migratory Bird Day
1704	IMDb	Internet Movie Database
1705	IME	In My Experience
1706	IMHO	In My Humble/Honest Opinion
1707	IML	International Mister Leather
1708	IMNSHO	In My Not So Humble Opinion
1709	IMPAC	International Merchant Purchase Authorization Card
1710	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1711	IMPATT	IMPact Avalanche Transit Time diode
1712	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1713	IMRL	Individual Material iness List
1714	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1715	IMsL	International Ms. Leather
1716	IMT	Integrated Management Tool
1717	IMU	International Mathematical Union
1718	In	Indium
1719	INA	Immigration and Nationality Act
1720	INAS	International Near-Earth Asteroid Survey
1721	INCITS	InterNational Committee for Information Technology Standards
1722	IND	India (ISO 3166 trigram)
1723	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1724	inet	the Internet
1725	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1726	INFOSEC	Information Security
1727	INLA	Irish National Liberation Army
1728	INMARSAT	International Maritime Satellite organization
1729	INRIA	Institut national de recherche en informatique et en automatique
1730	INS	Immigration and Naturalization Service
1731	InSAR	Interferometric synthetic aperture radar
1732	INST	Information Standards and Technology
1733	INTERFET	International Force for East Timor
1734	INTSUM	Intelligence Summary
1735	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1736	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1737	IPB	Intelligence Preparation of the Battlefield
1738	IPL	Inferior Parietal Lobule
1739	IPO	Initial Public Offering
1740	IPT	Integrated Product/Project Team
1741	IPTS	Institute for Prospective Technological Studies
1742	IPTV	Internet Protocol TeleVision
1743	IPW	Interrogation of Prisoners of War
1744	Ir	Iridium
1745	IRAD	Internal Research and Development
1746	IRAN	(I) Inspect and Repair As Necessary
1747	IRAS	Infrared Astronomical Satellite
1748	IRB	International Rugby Board
1749	IRBM	Intermediate Range Ballistic Missile
1750	IREA	Intermountain Rural Electric Association
1751	IRINN	Islamic Republic of Iran News Network
1752	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1753	IRN	Iran (ISO 3166 trigram)
1754	IRO	International Refugee Organisation
1755	IRQ	Iraq (ISO 3166 trigram)
1756	IRS	U.S. Internal Revenue Service
1757	IRST	Infra-red Search and Track
1758	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1759	ISAR	Inverse SAR (Synthetic Aperture Radar)
1760	ISB	Intermediate Staging Base
1761	ISBN	International Standard Book Number (ISO 2108)
1762	ISCCP	International Satellite Cloud Climatology Project
1763	ISCII	Indian Standard Code for Information Interchange
1764	ISDN	Integrated Services Digital Network
1765	ISEF	Intel International Science and Engineering Fair
1766	ISEN	Internet Search Environment Number
1767	ISF	Internal Security Force
1768	ISIL	Islamic State of Iraq and the Levant
1769	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1770	ISL	Iceland (ISO 3166 trigram)
1771	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1772	ISMB	International Society of Matrix Biologists
1773	ISMC	Intelligent Sounding Meaningless Conversation
1774	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1775	ISPE	International Society for Pharmacoepidemiology
1776	ISRO	Indian Space Research Organisation
1777	ISSCR	International Society for Stem Cell Research
1778	ISSN	International standard serial number (ISO 3297)
1779	ISTC	Institute of Scientific and Technical Communications (UK)
1780	ISTS	Intel Science Talent Search
1781	ITA	Italy (ISO 3166 trigram)
1782	ITAG	Inertial Terrain-Aided Guidance
1783	ITALY	I'll Truly Always Love You
1784	ITAS	Improved Target Acquisition Sight
1785	ITC	InferoTemporal Cortex (neurophysiology)
1786	ITCZ	Intertropical Convergence Zone
1787	ITEC	Information Technology Exposition & Conference
1788	ITEMS	Interactive Tactical Environment Management System
1789	ITER	International Thermonuclear Experimental Reactor
1790	ITF	International Tennis Federation
1791	ITK	In The Know
1792	ITN	Independent Television News (British)
1793	ITT	International Telephone and Telegraph (U.S.)
1794	ITTO	International Tropical Timber Organization
1795	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1796	Iveco	Industrial Vehicles Corporation
1797	IVF	In Vitro Fertilisation
1798	IVI	Interchangeable Virtual Instrument
1799	IVIS	Inter-Vehicle Information System
1800	IVL	Inter-Visibility Line
1801	IVM	In Vitro [Oocyte] Maturation
1802	IVO	In Vicinity Of
1803	IW	Information Warfare
1804	IWARS	Infantry Warrior Simulation
1805	IWC	International Whaling Commission
1806	IWW	Industrial Workers of the World
1807	IX	Nine (in Roman numerals)
1808	IXT	IntraText digital library; IntraText lexical hypertext
1809	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1810	IZ	Iraq (FIPS 10-4 country code)
1811	J	Joule
1812	J1	Joint [Manpower &] Personnel Directorate
1813	J2	Joint Intelligence Directorate
1814	J3	Joint Operations Directorate
1815	J4	Joint Logistics Directorate
1816	J5	Joint Strategic Plans & Policy Directorate
1817	J7	Joint Operational Plans & Interoperability Directorate
1818	JA	Japan (FIPS 10-4 country code)
1819	JAFT	Just A Field Test
1820	JAL	Japan Airlines
1821	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1822	JAM	Jamaica (ISO 3166 trigram)
1823	JAMA	Journal of the American Medical Association
1824	JANET	Joint Academic Network
1825	JATO	Jet-Assisted Take-Off
1826	JB	Jail Bait
1827	JB	Junior Branch
1828	JBFSA	Joint Blue Force Situational Awareness
1829	JCDB	Joint Common Data Base
1830	JCDS	Joint Chiefs of the Defence Staff
1831	JCIDS	Joint Capabilities Integration and Development System
1832	JCL	Job Control Language
1833	JCP	Java Community Process
1834	JCS	Joint Chiefs of Staff
1835	JCW	Juggalo Championship Wrestling
1836	JDBC	Java Data Base Connectivity
1837	JDEM	Joint Dark Energy Mission
1838	JDL	Jewish Defense League
1839	JE	Jersey (FIPS 10-4 territory code)
1840	JEFX	Joint Expeditionary Force eXperiment
1841	JET	Joint European Torus
1842	JEZ	Joint Engagement Zone
1843	JFACC	Joint Force Air Component Commander
1844	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1845	JFC	Joint Force Commander
1846	JFK	John Fitzgerald Kennedy or the airport named after him.
1847	JFLCC	Joint Force Land Component Commander
1848	JFMCC	Joint Force Maritime Component Commander
1849	JFO	Journal of Field Ornithology
1850	JFSOCC	Joint Force Special Operations Component Commander
1851	JFTX	Joint Field Training Exercise
1852	JH	Japan Highway Public Corporation
1853	JH	Jharkhand (Indian state code)
1854	JI	Joint Implementation
1855	JIB	Joint Information Bureau
1856	JIC	Joint Intelligence Centre
1857	JINI	Java Intelligent Network Infrastructure
1858	JITC	Joint Interoperability Test Command
1859	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1860	JJAP	Japanese Journal of Applied Physics
1861	JL	Japan Airlines (IATA airline designator)
1862	JLA	Justice League of America
1863	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1864	JMS	Java Message Service
1865	JN	Jan Mayen Island (FIPS 10-4 territory code)
1866	JNI	Java Native Interface
1867	JNLP	Java Network Launch Protocol
1868	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1869	JOA	Joint Operations Area
1870	JOPES	Joint Operations Planning and Execution System
1871	JOR	Jordan (ISO 3166 trigram)
1872	JOTS	Joint Operations Tactical System
1873	JPL	Jet Propulsion Laboratory
1874	JPN	Japan (ISO 3166 trigram)
1875	JPOW	Joint Project Optic Windmill
1876	JRDF	Joint Rapid Deployment Forces
1877	JRE	Java Runtime Environment
1878	JREF	James Randi Educational Foundation
1879	JROC	Joint Requirements Oversight Council
1880	JROCM	JROC Memorandum
1881	JRRF	Joint Rapid Reaction Force
1882	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1883	JSAP	Japan Society of Applied Physics
1884	JSCSC	Joint Services Command and Staff College
1885	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
1886	JSF	Joint Strike Fighter
1887	JSIMS	Joint Simulation System
1888	JSOA	Joint Special Operations Area
1889	JSOTF	Joint Special Operations Task Force
1890	JSP	JavaServer Page
1891	JSP	Joint Services Publication
1892	JSR	Java Specification Request
1893	JSS	Joint Support Ship Project
1894	JTC	Joint Training Confederation
1895	JTF	Joint Task Force
1896	JTFEX	Joint Task Force Exercise
1897	JTLS	Joint Theater Level Simulation
1898	JTMD	Joint Theatre Missile Defence
1899	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
1900	JU	Juan de Nova Island (FIPS 10-4 territory code)
1901	JUGFET	JUnction Gate Field-Effect Transistor
1902	JUICE	JUpiter ICy Moon Explorer
1903	JUO	Joint Urban Operations
1904	JV	Joint Venture,Junior Varsity
1905	JW	Jehovah's Witnesses
1906	JWARS	Joint Warfare System (simulation)
1907	JWP	Joint Warfare Publication
1908	JY	Japanese Yen
1909	JZ	Joint Zone
1910	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
1911	k	Kilo-
1912	K	picokelvin
1913	K9	Canine Police Unit
1914	Ka	Kamov Design Bureau
1915	kA	Kiloampere
1916	KA	Knowledge Acquisition,Karnataka (Indian state code)
1917	KAF	Kandahar Air Field
1918	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
1919	KARNAC	Knowledge Aided Retrieval in Activity Context
1920	KARR	Knight Automated Roving Robot (Knight Rider character)
1921	KATUSA	Korean Augmentation To United States Army
1922	KAZ	Kazakhstan (ISO 3166 trigram)
1923	KBE	Knight Commander of the Order of the British Empire
1924	KBO	Kuiper Belt Object
1925	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
1926	kC	Kilocoulomb
1927	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
1928	KCL	King's College London
1929	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
1930	KCS	Kansas City Southern Railway (AAR reporting mark)
1931	KD	Kawasaki Disease,Kraft Dinner
1932	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
1933	KEDO	Korean Peninsula Energy Development Organization
1934	KEN	Kenya (ISO 3166 trigram)
1935	KERA	Kentucky Education Reform Act (of 1990)
1936	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
1937	KESR	Kent and East Sussex Railway.
1938	KET	Kentucky Educational Television,Key English Test
1939	kF	Kilofarad
1940	KFC	Kentucky Fried Chicken
1941	KFOR	UN Kosovo Force
1942	KFUPM	King Fahd University of Petroleum & Minerals
1943	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
1944	KGO	Knight of the Guelphic Order of Hanover
1945	KGZ	Kyrgyzstan (ISO 3166 trigram)
1946	KH	Cambodia (ISO 3166 digram)
1947	kH	Kilohenry
1948	KHL	Kontinental Hockey League
1949	KHM	Cambodia (ISO 3166 trigram)
1950	KHz	Kilohertz
1951	Ki	Kibi
1952	KI	Kiribati (ISO 3166 digram)
1953	KIA	Killed In Action
1954	KIDS	Knowledge-based Integrated Design System
1955	KIR	Kiribati (ISO 3166 trigram)
1956	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
1957	KIT	Keep In Touch
1958	KITECH	Korean Institute of Industrial Technology
1959	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
1960	kJ	Kilojoule
1961	kK	Kilokelvin
1962	KKK	Ku Klux Klan
1963	kL	Kilolitre
1964	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
1965	KLOC	Kilo Lines Of Code
1966	KM	Comoros,Knowledge Management
1967	kN	Kilonewton
1968	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
1969	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
1970	KO	Knocked Out
1971	KOR	Republic of Korea (ISO 3166 trigram)
1972	KP	Kim Possible
1973	KPMG	Klynveld,Peat,Marwick,Goerdeler
1974	KPNO	Kitt Peak National Observatory
1975	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
1976	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
1977	Kr	Krypton
1978	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
1979	kS	Kilosiemens
1980	KSC	Kennedy Space Center
1981	KSI	Killed or Seriously Injured
1982	KSU	Kansas State University
1983	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
1984	kT	Kilotesla
1985	KTS	Knight of the Tower and Sword (of Portugal)
1986	KU	Kuwait (FIPS 10-4 country code)
1987	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
1988	kV	Kilovolt
1989	KV	Kosovo
1990	kW	Kilowatt
1991	KW	Kuwait (ISO 3166 digram)
1992	KWB	Kids' WB!
1993	KWT	Kuwait (ISO 3166 trigram)
1994	KX	Cayman Airways (IATA airline designator)
1995	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
1996	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
1997	KZN	KwaZulu-Natal
1998	La	Lanthanum
1999	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2000	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2001	LAB	Logistics Assault Base
2002	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2003	LACMA	Los Angeles County Museum of Art
2004	LAD	Laser Aiming Device
2005	LADW	Local Air Defence Warning
2006	LAESI	Local Authority & Emergency Service Information
2007	LAN	Local Area Network
2008	LANL	Los Alamos National Laboratory
2009	LAO	Laos (ISO 3166 trigram)
2010	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2011	LARC	Livermore Advanced Research Computer (cf. LLNL)
2012	LARP	Live-Action Role-Playing
2013	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2014	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2015	LATA	Local Access Transport Area
2016	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2017	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2018	LAW	Light Antitank Weapon
2019	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2020	LB	Lebanon (ISO 3166 digram)
2021	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2022	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2023	LBN	Lebanon (ISO 3166 trigram)
2024	LBNL	Lawrence Berkeley National Laboratory
2025	LBR	Liberia (ISO 3166 trigram)
2026	LBS	Location-Based Services
2027	LBT	Large Binocular Telescope
2028	LBW	Leg Before Wicket
2029	LBY	Libya (ISO 3166 trigram)
2030	LCA	Saint Lucia (ISO 3166 trigram)
2031	LCC	Land Component Commander
2032	LCCP	Light Contingency Communications Package
2033	LCD	Liquid Crystal Display
2034	LCM	Least/Lowest Common Multiple
2035	LCS	League of Legends Championship Series
2036	LDA	Lateral Drift Apparatus (paratroops)
2037	LDC	Lesser Developing/Developed Country
2038	LDL	Low-Density Lipoprotein
2039	LDV	Local Defence Volunteers (British Home Guard)
2040	LDW	Lane Departure Warning (ADAS)
2041	LE	Lebanon (FIPS 10-4 country code)
2042	LEC	Local Exchange Carrier
2043	LED	Light-Emitting Diode
2044	LEGAD	Legal Advice
2045	Legs	level emotion gad speed
2046	LEMOSS	Long-Endurance MObile Submarine Simulator
2047	LEN	Large Extension Node
2048	LEP	Large Electron-Positron collider
2049	LER	Loss-Exchange Ratio
2050	LEU	Low-Enriched Uranium
2051	LF	Low Frequency
2052	LFO	Low Frequency Oscillation / Oscillator
2053	LFTR	Liquid fluoride thorium reactor
2054	LG	Latvia (FIPS 10-4 country code)
2055	LGM	Little Green Men
2056	LGS	Landsat Ground Station
2057	LHC	Large Hadron Collider
2058	LHS	Left Hand Side
2059	Li	Lithium
2060	LIBOR	London Interbank Offered Rate
2061	LIBS	Laser Induced Breakdown Spectroscopy
2062	LIE	Liechtenstein (ISO 3166 trigram)
2063	LIGO	Laser Interferometer Gravitational-Wave Observatory
2064	LINEAR	Lincoln Near-Earth Asteroid Research
2065	LISA	Laser Interferometer Space Antenna
2066	LIVE	Liquid Inertial Vibration Eliminator
2067	LJJ	Lord Justices of Appeal
2068	LK	Sri Lanka (ISO 3166 digram)
2069	LKA	Sri Lanka (ISO 3166 trigram)
2070	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2071	LLAD	Low Level Air Defence
2072	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2073	LLC	Limited Liability Company
2074	LLLTV	Low-Light Level Television
2075	LLNL	Lawrence Livermore National Laboratory
2076	LLP	Limited Liability Partnership
2077	LLTR	Low-Level Transit Route
2078	LMAO	Laughing My Ass Off (Internet shorthand)
2079	LMB	Lick My Balls
2080	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2081	LMN	Lifetime Movie Network
2082	LMS	Like My Status (Internet shorthand)
2083	LMV	() Light Motor Vehicle
2084	LNER	London and North Eastern Railway
2085	LNG	Liquefied Natural Gas
2086	LNO	Liaison Officer
2087	LO	Slovakia (FIPS 10-4 country code)
2088	LOA	Limit Of Advance
2089	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2090	LoD	Lines of Development (UK)
2091	LOFAR	Low Frequency Analysis and Recording
2092	LOGPAC	Logistics Package
2093	LOL	Laughing Out Loud (Internet shorthand)
2094	LOMEZ	Low Altitude Missile Engagement Zone
2095	LONEOS	Lowell Observatory Near-Earth-Object Search
2096	LORTID	LOng Range Target IDentification
2097	LOS	Line Of Sight
2098	LOSAT	Line-Of-Sight Anti-Tank (missile)
2099	LOTA	Licentiate of the Orthodontic Technicians Association
2100	LOTIS	Livermore Optical Transient Imaging System
2101	LOTS	Logistics Over-The-Shore
2102	LPC	Linear Predictive Coding
2103	LPG	Liquefied Petroleum Gas (cf. LNG)
2104	LPI	Low Probability of Intercept
2105	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2106	Lr	Lawrencium
2107	LR	Liberia (ISO 3166 digram)
2108	LRC	Logistics iness Center
2109	LRGW	Long-Range Guided Weapon
2110	LRICBM	Limited Range ICBM
2111	LRIP	Low Rate Initial Production
2112	LRP	Logistics Release Point
2113	LRPE	Long-Range Planning Element
2114	LRS	Long Range Surveillance
2115	LRU	Line-Replaceable Unit
2116	LSI	Large-Scale Integration
2117	LSIF	Labour Sponsored Investment Fund
2118	LSND	Liquid Scintillator Neutrino Detector
2119	LSO	Lesotho (ISO 3166 trigram)
2120	LSST	Large Synoptic Survey Telescope
2121	Lt	Lieutenant
2122	LtC	Lieutenant-Colonel (U.S.)
2123	LTC	Long-Term Costing
2124	Ltd	Limited
2125	LTDP	Long-Term Defence Plan
2126	LTI	Linear Time-Invariant
2127	LTM	Acronym for Laughing To Myself
2128	LTP	Long-Term Potentiation
2129	LTU	Lithuania (ISO 3166 trigram)
2130	LU	Acronym Love You
2131	LU	Loonatics Unleashed
2132	Lu	Lutetium
2133	LUCA	Last Universal Common Ancestor
2134	LUG	Linux User Group
2135	LULU	Locally Unwanted Land Use (urbanism)
2136	LUX	Luxembourg (ISO 3166 trigram)
2137	LVA	Latvia (ISO 3166 trigram)
2138	LVEF	Left Ventricular Ejection Fraction
2139	Lw	Lawrencium (obsolete 1963)
2140	LWR	Laser warning receiver
2141	LWRC	Land Warfare Resources Corporation
2142	LWS	Land Warrior System
2143	LX	Electrics (theatrical term)
2144	LYAO	Laugh Your Ass Off
2145	LYLAS	Love You Like A Sister
2146	Ma	Megaannum
2147	mA	Milliampere
2148	MAA	Mathematical Association of America
2149	MAAC	Metro Atlantic Athletic Conference
2150	MACE	Multi-Agent Computing Environment
2151	MACHO	MAssive Compact Halo Object
2152	MAF	Maintenance Action Form
2153	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2154	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2155	MAGTF	Marine Air-Ground Task Force
2156	MALD	Miniature Air-Launched Decoy
2157	MANPADS	MAN-Portable Air Defence System
2158	MANPRINT	MANpower and PeRsonnel INTegration
2159	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2160	MAOI	Monoamine oxidase inhibitor
2161	MAPS	Monitoring Avian Productivity and Survivorship
2162	MAR	Morocco (ISO 3166 trigram)
2163	MarBEF	Marine Biodiversity and Ecosystem Functioning
2164	MARCENT	United States Marine Forces Central Command
2165	MARFORCC	Marine Force Component Commander
2166	MASAS	Monte Agliale Supernovae and Asteroid Survey
2167	Maser	Microwave Amplification by Stimulated Emission of Radiation
2168	MASH	Mobile Army Surgical Hospital
2169	MASINT	Measurement And Signature Intelligence
2170	MAVS	Mobile Artillery Vehicle System
2171	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2172	MBCC	Migratory Bird Conservation Commission (U.S.)
2173	MBCS	Multi-Byte Character Set
2174	MBI	Moody Bible Institute
2175	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2176	MBM	Meat and Bone Meal
2177	MBT	Main Battle Tank
2178	MBTI	Myers-Briggs Type Indicator
2179	mC	Millicoulomb
2180	MCDL	Model Composition Definition Language
2181	MCFT	Modified Compression Field Theory
2182	MCG	Melbourne Cricket Ground
2183	MCIS	Mellon Collie and the Infinite Sadness
2184	MCM	Mine Counter-Measures
2185	MCMV	Mine Counter-Measure Vessel
2186	MCR	My Chemical Romance
2187	MCSF	Marine Corps Security Forces
2188	MCT	Movement Control Team
2189	MCTIS	Mounted Co-operative Target Identification System
2190	Md	Mendelevium
2191	MDNA	Madonna's 12th studio album title (2012)
2192	MDO	Membership Driven Organisation
2193	MDP	Markov Decision Process
2194	MDT	Mountain Daylight Time (UTC-6 hours)
2195	MDV	Maldives (ISO 3166 trigram)
2196	Me	Messerschmitt
2197	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2198	MECO	Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation)
2199	MEDEVAC	Medical evacuation
2200	MEDS	Mission Essential Data Set
2201	MEG	MagnetoEncephaloGraphy
2202	MELT	Metallic Line/Loop Test (ing)
2203	MEMS	Microelectromechanical System
2204	MER	Mars Exploration Rover
2205	MERL	Mitsubishi Electric Research Laboratories
2206	MES	Manufacturing Execution Systems
2207	METAR	[Meteorological] Aviation Routine weather report
2208	METOC	Meteorological and Oceanographic
2209	MeV	Megaelectronvolt
2210	MEX	Mexico (ISO 3166 trigram)
2211	MEZ	Missile Engagement Zone
2212	mF	Millifarad
2213	MGPAM	My Gym Partner's a Monkey
2214	MGS	Mobile Gun System
2215	mH	Millihenry
2216	MHC	Major Histocompatibility Complex
2217	MHHW	Mean Higher High Water (nautical charts)
2218	MHL	Marshall Islands (ISO 3166 trigram)
2219	MHLW	Mean Higher Low Water (nautical charts)
2220	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2221	MHW	Mean High Water (nautical charts)
2222	MHWN	Mean High Water Neaps (nautical charts)
2223	MHWS	Mean High Water Springs (nautical charts)
2224	MHz	Megahertz
2225	Mi	Mebi
2226	MIA	Missing In Action
2227	MICLIC	Mine Clearing Line Charge
2228	MICOM	Missile Command
2229	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2230	MIDAS	Man-machine Integration Design and Analysis System
2231	MIDI	Musical Instrument Digital Interface
2232	MIDS	Multi-Function Information Distribution System
2233	MIFG	Shallow Fog (METAR Code)
2234	MIKE	Monitoring of Illegal Killing of Elephants
2235	MIL	Man-In-the-Loop
2236	MILC	Mirrorless interchangeable-lens camera
2237	MILF	Mother I'd Like to Fuck
2238	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2239	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2240	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2241	MIRV	Multiple Independent Reentry Vehicle
2242	MISREP	Mission Report
2243	MISSI	Multilevel Information System Security Initiative
2244	MITL	Man-In-The-Loop
2245	MITS	see entry
2246	mJ	Millijoule
2247	MJD	Modified Julian Day
2248	mK	Millikelvin
2249	MKG	Michael Kidd-Gilchrist (American basketball player)
2250	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2251	mL	Millilitre
2252	MLB	Major League Baseball
2253	MLC	Member of the Legislative Council (in India)
2254	MLE	Maximum likelihood estimation
2255	MLHW	Mean Lower High Water (nautical charts)
2256	MLI	Mali (ISO 3166 trigram)
2257	MLL	Major League Lacrosse
2258	MLLW	Mean Lower Low Water (nautical charts)
2259	MLP	My Little Pony
2260	MLRS	Multiple-Launch Rocket System
2261	MLT	Malta (ISO 3166 trigram)
2262	MLW	Mean Low Water (nautical charts)
2263	MLWN	Mean Low Water Neaps (nautical charts)
2264	MLWS	Mean Low Water Springs (nautical charts)
2265	Mm	Megametre
2266	mm	Millimetre
2267	MMEV	Multi-Mission Effects Vehicle
2268	MMI	Magical MonkeyZ Inc.
2269	MMI	Man-Machine Interface
2270	MMI	McLean Meditation Institute
2271	MMIC	McLean Meditation Institute Certified
2272	MMO	Massively Multiplayer Online (computer game)
2273	MMOR	Master of Management in Operations Research
2274	MMORPG	Massively multiplayer online role-playing game
2275	MMPR	Mighty Morphin Power Rangers
2276	MMS	Multimission Modular Spacecraft
2277	Mn	Manganese
2278	mN	Millinewton
2279	MNB	Multinational Brigade
2280	MNE	Montenegro (ISO 3166 trigram)
2281	MNMF	Multi-National Maritime Force
2282	MNP	Northern Mariana Islands (ISO 3166 trigram)
2283	MNS	Mission Needs Statement
2284	Mo	Molybdenum
2285	MOA	Museum of Art (Brigham Young University)
2286	MOCAS	Mechanization Of Contract Administration Services
2287	MoD	Ministry of Defence (United Kingdom) and various other countries
2288	modem	Modulator-Demodulator
2289	Moe	Marvel of entertainment
2290	MOE	Measure Of Effectiveness
2291	MOF	Ministry of Finance (Japan)
2292	MOFA	Ministry of Foreign Affairs (Japan)
2293	MOID	Minimum Orbital Intersection Distance
2294	MOJWA	Movement for Oneness and Jihad in West Africa
2295	MOLO	Mobile Other Licensed Operator (UK)
2296	MOM	Master's Degree in Oriental medicine
2297	MOM	Message Oriented Middleware
2298	MoM	Multiple of the median
2299	MoMA	Museum of Modern Art (NYC)
2300	MOND	Modified Newtonian Dynamics
2301	MOO	Measure Of Outcome
2302	MOPP	Mission-Oriented Protective Posture
2303	MORP	Meteorite Observation and Recovery Project
2304	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2305	MOT	Ministry of Transport (UK)
2306	MOTA	Member of the Orthodontic Technicians Association
2307	MOTESS	Moving Object and Transient Event Search System
2308	MOU	Memorandum Of Understanding
2309	MOW	Maintenance of way (also MW)
2310	MOZ	Mozambique (ISO 3166 trigram)
2311	MPa	Megapascal
2312	mPa	Millipascal
2313	MPAA	Motion Picture Association of America
2314	MPEC	Minor Planet Electronic Circular
2315	MPEG	Motion Pictures (Coding) Experts Group
2316	MPEV	Multi-Purpose Engineering Vehicle
2317	MPF	Maritime Prepositioning Force
2318	MPFC	Medial PreFrontal Cortex
2319	MPG	Miles Per Gallon
2320	MPMC	Medial PreMotor Cortex
2321	MPSI	Member of the Pharmaceutical Society of Ireland
2322	MPSoC	MultiProcessor System-on-Chip
2323	MPSRON	Maritime Propositioning Ship Squadron
2324	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2325	MRAV	Multi-Role Armoured Vehicle
2326	MRBM	Medium Range Ballistic Missile
2327	MRC	Maintenance Requirements Card
2328	MRD	Motorized Rifle Division
2329	MRGW	Medium-Range Guided Weapon
2330	MRI	Magnetic Resonance Imaging
2331	MRL	Multiple Rocket Launcher
2332	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2333	MRS	Magnetic Resonance Spectroscopy
2334	MRSA	Methicillin-resistant Staphylococcus aureus
2335	MRTFB	U.S. Major Range and Test Facility Base
2336	Ms	Megasecond
2337	mS	Millisiemens
2338	MSD	Minimum Safe Distance
2339	MSDB	Multi Source Data Base
2340	MSE	Multiple Subscriber Element
2341	MSG	Message
2342	MSLP	Mean Sea Level Pressure
2343	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2344	MSO	Multiple System Operator
2345	MSPB	Merit Systems Protection Board
2346	MSSA	Methicillin-susceptible Staphylococcus aureus
2347	Mt	Meitnerium
2348	mT	Millitesla
2349	MTBF	Mean time between failures
2350	MtF	Male-to-female transsexual
2351	MTG	Magic: The Gathering
2352	MTQ	Martinique (ISO 3166 trigram)
2353	MTT	Methylthiazol tetrazolium (assay)
2354	MTWS	MAGTF Tactical Warfare System
2355	MUS	Mauritius (ISO 3166 trigram)
2356	mV	Millivolt
2357	MVC	Missouri Valley Conference
2358	MVFC	Missouri Valley Football Conference
2359	MVNO	Mobile virtual network operator
2360	mW	Milliwatt
2361	MWESH	Machismo Wizards Extended SHelter (operating system)
2362	MWI	Malawi (ISO 3166 trigram)
2363	MWOA	Mount Wilson Observatory Association
2364	MWTB	Mounted Warfare Test Bed
2365	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2366	MYOB	Mind Your Own Business
2367	MYS	Malaysia (ISO 3166 trigram)
2368	MYT	Mayotte (ISO 3166 trigram)
2369	n	Nano
2370	N3F	National Fantasy Fan Federation
2371	nA	Nanoampere
2372	Na	Sodium (Latin Natrium)
2373	NAA	N-Acetylaspartate
2374	NAAD	North American Air Defense
2375	NAAQS	National Ambient Air Quality Standards
2376	NAAWS	NATO Anti-Air Warfare System
2377	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2378	NACC	North Atlantic Cooperation Council
2379	NACISA	NATO Communications and Information Systems Agency
2380	NACMA	NATO Air Command and Control System Management Agency
2381	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2382	NAEC	U.S. Naval Air Engineering Center
2383	NAFERA	Native American Free Exercise of Religion Act
2384	NAFLD	NonAlcoholic Fatty Liver Disease
2385	NAFO	Northwest Atlantic Fisheries Organization
2386	NAFTA	North American Free Trade Agreement
2387	NAGPRA	Native American Graves Protection and Repatriation Act
2388	NAICS	North American Industry Classification System
2389	NAIL	Neurotics Anonymous
2390	NAILS	National Airspace Integrated Logistics System
2391	NAIRU	Non Accelerating Inflation Rate of Unemployment
2392	NAK	Negative Acknowledge
2393	NAM	Namibia (ISO 3166 trigram)
2394	NAMBLA	North American Man-Boy Love Association
2395	NAMRL	Naval Aerospace Medical Research Laboratory
2396	NaN	Not A Number (computing)
2397	NAO	UK National Audit Office
2398	NAPS	Navy Acquisition Procedures Supplement
2399	NARA	(U.S.) National Archives and Records Administration
2400	NARAL	National Abortion Rights Action League
2401	NARDAC	Naval Regional Data Automation Center
2402	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2403	NARPV	National Association for Remotely Piloted Vehicles
2404	NASCAR	National Association for Stock Car Auto Racing
2405	NASDAQ	National Association of Securities Dealers Automated Quotations
2406	NASED	National Association of State Election Directors [1][2]
2407	NASH	Non-Alcoholic Steatohepatitis
2408	NASP	National Aerospace Plane
2409	NASS	National Association of Secretaries of State [3]
2410	NatGeo	National Geographic
2411	NaUKMA	National University of Kyiv-Mohyla Academy
2412	NAV	Navigation[al]
2413	NAVCAMS	Naval Communications Area Master Station
2414	NAVCC	National Audio-Visual Conservation Center
2415	NAVCENT	Naval Forces U.S. Central Command
2416	NAVDAC	Naval Data Automation Command
2417	NAVEUR	Naval Forces U.S. European Command
2418	NAVFOR	Naval Force
2419	NAVMACS	Naval Modular Automatic Communication Subsystem
2420	NAVNET	Navy Network
2421	NAVS	Non-Cooperative Airborne Vector Scoring
2422	NAVSAT	Navigation Satellite
2423	NAVSPACECOM	U.S. Navy Space Command
2424	NAVSPASUR	U.S. Naval Space Surveillance System
2425	NAVSTAR	Navigation Satellite Timing And Ranging
2426	NAVTACNET	Navy Tactical Network
2427	NAWC	U.S. Naval Air Warfare Center
2428	Nb	Niobium
2429	NBA	National Basketball Association
2430	NBL	National Basketball League (Australia)
2431	NBT	Nitroblue tetrazolium (assay)
2432	nC	Nanocoulomb
2433	NCA	National Command Authority
2434	NCAR	U.S. National Center for Atmospheric Research
2435	NCB	National Codification Bureau
2436	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2437	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2438	NCDDR	U.S. National Center for the Dissemination of Disability Research
2439	NCI	U.S. National Cancer Institute
2440	NCL	New Caledonia (ISO 3166 trigram)
2441	NCLR	National Council of La Raza
2442	NCMO	No Commitment Make Out
2443	NCO	Non-Commissioned Officer
2444	NCP	Net Contracted Purchases
2445	NCR	National Cash Register Co.
2446	NCTR	Non-Co-operative Target Recognition
2447	NCW	Network Centric Warfare
2448	Nd	Neodymium
2449	NDAA	U.S. National Defense Authorization Act
2450	NDBP	Non-Departmental Public Body (Scotland)
2451	NDP	New Democratic Party (Canada)
2452	NDS	Nintendo DS
2453	Ne	Neon
2454	NECTEC	National Electronics and Computer Technology Center (Thailand)
2455	NEMS	National Energy Modeling System (USDOE-EIA)
2456	NEPA	National Environmental Policy Act
2457	NER	Niger (ISO 3166 trigram)
2458	NERICA	New Rice for Africa
2459	NESP	NSA/CSS Enterprise Standards Program
2460	NET	National Educational Television
2461	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2462	NETL	(US) National Energy Technology Laboratory
2463	NETWARS	Network Warfare Simulation
2464	NEX	Navy EXchange
2465	nF	Nanofarad
2466	NF	Norfolk Island (ISO 3166 digram)
2467	NFER	National Foundation for Educational Research
2468	NFG	No Fucking Good
2469	NFHS	National Federation of State High School Associations
2470	NFI	Not F****** Interested
2471	NFK	Norfolk Island (ISO 3166 trigram)
2472	Nfld	Newfoundland
2473	NFPA	National Fluid Power Association (United States)
2474	NFT	No Further Text
2475	NGATS	New Generation Army Targetry System
2476	NGH	Northern General Hospital
2477	NGO	non-governmental organization
2478	NGS	Naval Gunfire Support
2479	nH	Nanohenry
2480	NHANES	National Health and Nutrition Examination Survey
2481	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2482	NHB	No Holds Barred radio (Link)
2483	NHL	National Hockey League
2484	NHRA	National Hot Rod Association
2485	NHS	National Health Service (UK)
2486	Ni	Nickel
2487	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2488	NIAG	NATO Industrial Advisory Group
2489	NIAID	National Institute of Allergies and Infectious Disease
2490	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2491	NIB	New In Box (Internet auction/trading listings)
2492	NIBP	Non-invasive blood pressure monitor
2493	NicA	Nicotine Anonymous
2494	NICAP	National Investigations Committee on Aerial Phenomena
2495	NICE	UK. National Institute for Health and Clinical Excellence
2496	NICHD	National Institute of Child Health and Human Development [4]
2497	NICP	National Inventory Control Point
2498	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2499	NIDRR	National Institute on Disability Research and Rehabilitation
2500	NIEHS	National Institute of Environmental Health Sciences
2501	NIIN	National Item Identification Number
2502	NIMA	National Imagery and Mapping Agency (became NGA)
2503	NIMBY	Not In My Back Yard (See NOME)
2504	NIMG	Not In My Generation
2505	NIN	Nine Inch Nails (band)
2506	NIPR	National Institute of Polar Research (Japan)
2507	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2508	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2509	NISCAP	NSA Information System Certification and Accreditation Program
2510	NISER	National Institute of Science Education and Research
2511	NIST	National Institute of Standards and Technology
2512	NITFS	National Imagery Transmission Format Standard
2513	NIU	Niue (ISO 3166 trigram)
2514	nJ	Nanojoule
2515	NJ	New Jersey (postal symbol)
2516	NJHS	National Junior Honor Society
2517	NJPW	New Japan Pro Wrestling
2518	nK	Nanokelvin
2519	NKA	No Known Allergies
2520	nL	Nanolitre
2521	NLB	Non-Linear Battlefield
2522	NLD	Netherlands (ISO 3166 trigram)
2523	NLF	National Liberation Front (disambiguation)
2524	NLL	National Lacrosse League
2525	NLW	Non-Lethal Weapon
2526	nm	Nanometre
2527	NM	New Mexico (postal symbol)
2528	NMCI	Navy Marine Corps Intranet
2529	NMCS	Not Mission Capable Supply (SM&R code)
2530	NMD	U.S. National Missile Defense
2531	NMN	No middle name
2532	NMR	Nuclear Magnetic Resonance
2533	NMSG	NATO Modelling and Simulation Group
2534	nN	Nanonewton
2535	NNE	North North-East
2536	NNSA	U.S. National Nuclear Security Administration
2537	NNW	North North-West
2538	No	Nobelium
2539	NOAA	U.S. National Oceanic and Atmospheric Administration
2540	NOAF	Norwegian Air Force
2541	NOAO	National Optical Astronomy Observatory
2542	NOC	UK. National Oceanography Centre
2543	NODEF	NATO Oceanographic Data Exchange Format
2544	NOGI	New Orleans Grande Isle (award for diving)
2545	NOLF	Navy OutLying Field
2546	NOME	Not on Mars Either
2547	NOME	Not on Mars Either (see NIMBY)
2548	NOR	Norway (ISO 3166 trigram)
2549	NORELPREF	No religious preference
2550	NORTHAG	Northern Army Group
2551	NOSA	NATO OSI Security Architecture
2552	NOTAFLOF	No One Turned Away For Lack Of Funds
2553	NOW	National Organization for Women
2554	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2555	NPB	Nippon Professional Baseball
2556	NPCS	Non-Passenger Coaching stock (in Railways)
2557	NPD	Nationaldemokratische Partei Deutschlands (German)
2558	NPDI	New Product Development and Introduction
2559	NPG	Needline/Network Participation Group
2560	NPH	Normal Pressure Hydrocephalus
2561	NPO	nothing by mouth
2562	NPOV	Neutral Point Of View
2563	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2564	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2565	NRA	National Rifle Association
2566	NRAO	National Radio Astronomy Observatory
2567	NRDC	(U.S.) Natural Resources Defense Council
2568	NREL	U.S. National Renewable Energy Laboratory
2569	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2570	NRMP	National Resident Matching Program (U.S. medicine)
2571	NRO	U.S. National Reconnaissance Office
2572	NRT	Near Real Time
2573	NRU	Nauru (ISO 3166 trigram)
2574	ns	Nanosecond
2575	nS	Nanosiemens
2576	NSABB	National Science Advisory Board for Biosecurity
2577	NSAID	Non-Steroidal Anti-Inflammatory Drug
2578	NSB	Norges Statsbaner (Norwegian State Railways)
2579	NSC	National Security Council
2580	NSDL	National Science Digital Library (US)
2581	NSG	National System for Geospatial-Intelligence
2582	NSN	National Stock Number
2583	NSNA	National Student Nurses' Association
2584	NSO	National Standardization Office (ABCA)
2585	NSS	(U.S.) Naval Simulation System
2586	NST	(UK) Nimrod Software Team
2587	NSTAC	National Security Telecommunications Advisory Committee
2588	NSW	New South Wales (postal symbol)
2589	nT	Nanotesla
2590	NTDS	Naval Tactical Data System
2591	NTP	Network Time Protocol
2592	NTR	Network Time Reference
2593	NTRA	National Thoroughbred Racing Association
2594	NTSB	National Transportation Safety Board
2595	NTV	Non-Tactical Vehicle
2596	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2597	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2598	NUTS	Nuclear Utilization Target Selection
2599	NUWC	U.S. Naval Undersea Warfare Center
2600	nV	Nanovolt
2601	NVEOL	Night Vision and Electro-Optics Laboratory
2602	NVG	Night Vision Goggles
2603	NVL	Night Vision Laboratory
2604	nW	Nanowatt
2605	NW	North-West
2606	NW	Nuclear Weapon
2607	NWA	National Wrestling Alliance
2608	NWF	National Wildlife Federation
2609	NWFZ	Nuclear-Weapon-Free Zone
2610	NWHN	U.S. National Women's Health Network
2611	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2612	NWOAHM	New Wave of American Heavy Metal
2613	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2614	NWRA	National Wildlife Rehabilitators Association
2615	NWSL	National Women's Soccer League (U.S.)
2616	NWT	North-West Territories
2617	NXA	21st arcade game in the Pump It Up series
2618	NXD	Native XML
2619	NXE	New Xbox Experience
2620	NXG	New Cross Gate station
2621	NXL	National XBall League
2622	NXN	Nike Cross Nationals
2623	NY	New York (postal symbol)
2624	NYC	New York City
2625	NYHA	New York Heart Association
2626	NYO	National Youth Orchestra of Great Britain
2627	NYSE	New York Stock Exchange
2628	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2629	NZC	New Zealand Cricket
2630	NZL	New Zealand (ISO 3166 trigram)
2631	NzL	Noze looan (online/event listings)
2632	NZOSS	New Zealand Open Source Society
2633	NZRU	New Zealand Rugby Union
2634	OAC	On Approved Credit
2635	OAP	Old Age Pensioner (UK)
2636	OARSI	Osteoarthritis Research Society International
2637	OAS	Organization of American States
2638	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2639	OASIS	Ontario Association of Sewage Industry Services
2640	OASP	Operational Analysis Support Paper/Plan
2641	OAU	Organization for African Unity
2642	OBE	Officer of the Order of the British Empire
2643	OBX	Outer Banks (North Carolina)
2644	OC	Officer Commanding
2645	OCD	Obsessive-Compulsive Disorder
2646	OCFS	Oracle Cluster File System
2647	OCFS2	Oracle Cluster File System Release 2
2648	OCMCC	[2] Orchard County MCC
2649	OCN	Oncology Certified Nurse
2650	OCO	Oort Cloud Object
2651	OCR	Optical Character Recognition
2652	OCS	see entry
2653	ODAS	OCA-DLR Asteroid Survey
2654	ODBC	Open DataBase Connectivity
2655	OEA	(U.S.) Office of Economic Adjustment
2656	OECD	Organisation for Economic Co-operation and Development (international)
2657	OED	Oxford English Dictionary
2658	OEG	Operation Exposure Guidance
2659	OEIS	On-Line Encyclopedia of Integer Sequences
2660	OEM	Original Equipment Manufacturer
2661	OFA	Occipital Face Area
2662	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2663	OGC	Open Geospatial Consortium
2664	OGD	Other Government Department
2665	OGO	Other Government Organization
2666	OH	Ohio (postal symbol)
2667	OHC	OverHead-Cam engine
2668	OHHLA	Original Hip-Hop Lyrics Archive
2669	OHIP	Ontario Health Insurance Plan
2670	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2671	OHP	Observatoire de Haute-Provence
2672	OHSS	Ovarian Hyperstimulation Syndrome
2673	OIC	Officer In Charge
2674	OIF	Operation Iraqi Freedom
2675	OIOC	Oriental & India Office Collections (in the British Library)
2676	OJT	On-the-Job Training
2677	OKC	Oklahoma City
2678	OLED	Organic Light-Emitting Diode
2679	OLS	Operational Linescan System
2680	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2681	OME	Osaka Mercantile Exchange
2682	OMFG	Oh My Fucking God
2683	OMG	Oh My God or Or My Gosh
2684	OMGW	Oh My Gosh it's Windy
2685	OMN	Oman (ISO 3166 trigram)
2686	OMNCS	U.S. Office of the Manager for the National Communications System
2687	OMP	Order of Mapungubwe in Platinum
2688	OMS	Order of Mapungubwe in Silver
2689	OMT	Object Model Template
2690	ON	Ontario (postal symbol)
2691	ONC	Orthopaedic Nurse Certified
2692	ONG	Orthodontic National Group
2693	ONI	(U.S.) Office of Naval Intelligence
2694	ONS	Operational Needs Statement
2695	OOAD	Object Oriented Analysis and Design
2696	OOBE	Out-of-body experience
2697	OOCL	Orient Overseas Container Line
2698	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2699	OOF	Out of Facility
2700	OOMF	One Of My Followers
2701	OOO	Out Of the Office
2702	OOTW	Operations Other Than War
2703	OP	Observation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point,in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items),Overpowered,often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong
2704	OPAC	Online Public Access Catalogue
2705	OPCON	Operational control
2706	OPCW	Organisation for the Prohibition of Chemical Weapons
2707	OPEC	Organization of the Petroleum Exporting Countries
2708	OPFOR	Opposing force
2709	OPINTEL	Operational Intelligence
2710	OPLAN	Operation plan (also OpPlan)
2711	OPORD	Operation order
2712	OPSEC	Operations security,Open Platform for Security
2713	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2714	OPTAR	Operational target
2715	OPV	Offshore Patrol Vessel
2716	OQ	Order Quantity,in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items)
2717	OR	Operating Room (surgery),Operational/Operations Research,Oregon (postal symbol),overreciprocation,when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable
2718	ORAU	Oak Ridge Associated Universities
2719	ORB	Object Request Broker
2720	ORBAT	Order of Battle
2721	ORD	Office of Research and Development,Operational Requirements Document
2722	ORF	Operational iness Float
2723	ORISE	Oak Ridge Institute for Science and Education
2724	ORNL	Oak Ridge National Laboratory
2725	ORR	Oak Ridge Reservation (U.S. DOE),Office of Rail Regulation (UK government),Office of Refugee Resettlement,(CIA) Office of Research and Reports,Operational iness Rate,Operational iness Review
2726	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2727	OS	Operating System
2728	Os	Osmium
2729	OSA	Order of St. Augustine
2730	OSCE	Organisation for Security and Cooperation in Europe
2731	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2732	OSDL	Open Source Development Labs
2733	OSE	Own Separate Entrance
2734	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2735	OSETI	Optical SETI also Optical SETI
2736	OSHA	Occupational Safety and Health Administration
2737	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2738	OSIA	(U.S.) On-Site Inspection Agency
2739	OSIRIS	Optical,Spectroscopic,and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias)
2740	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2741	OSM	One Saturday Morning
2742	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2743	OSPA	Operations Security Professional's Association site of OSPA
2744	OSPA	Oregon School Psychologists Association [3]
2745	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2746	OSU	Ohio State University,Oklahoma State University
2747	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2748	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2749	OTC	Over-The-Counter (drugs)
2750	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2751	OTEA	(U.S. Army) Operational Test Evaluation Agency
2752	OTI	Office of Transition Initiatives (United States Agency for International Development)
2753	OTOH	On The Other Hand
2754	OTS	Off the scale,sexually untouchable except for a lot of money
2755	OTSBH	Over The Shoulder Boulder Holder
2756	OTW	On The Way
2757	OTYBL	Over To You Blue Leader
2758	OTYRL	Over To You Red Leader
2759	OU	University of Oklahoma
2760	OW	Old Wykehamist
2761	OWN	Oprah Winfrey Network
2762	OX	IATA code for Orient Thai Airlines
2763	OXC	Optical cross-connect
2764	OXM	Official Xbox Magazine
2765	OXT	Oxytocin
2766	OZ	(?) Australia
2767	p	pico
2768	P2P	Peer-to-peer (networking)
2769	pA	picoampere
2770	PAA	Position Area for Artillery
2771	PABX	Private Automated Branch eXchange (company phone system)
2772	PACOM	(U.S.) Pacific Command
2773	PADI	Professional Association of Diving Instructors
2774	PAEK	PolyArylEtherKetone
2775	PAFC	Plymouth Argyle Football Club
2776	PAH	Polycyclic aromatic hydrocarbon
2777	PAHO	Pan American Health Organization
2778	PAK	Pakistan (ISO 3166 trigram)
2779	PAM	Precision Attack Missile
2780	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2781	PARC	Palo Alto Research Center
2782	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2783	PARP	(NATO Partnership for Peace) Planning And Review Process
2784	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2785	PAS	See entry
2786	PASR	Personnel Accounting and Strength Reporting
2787	PATH	Port Authority Trans-Hudson
2788	PAYD	Pay As You Drive
2789	PAYE	Pay As You Earn
2790	Pb	Lead (Latin Plumbum)
2791	PB	PolyButylene
2792	PBB	PolyBrominated Biphenyl
2793	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2794	PBD	PolyButaDiene
2795	PBDE	PolyBrominated Diphenyl Ether
2796	PBI	PolyBenzImidazole
2797	PBN	PolyButylene Naphthalate
2798	PBOH	Please Become Old History
2799	PBT	PolyButylene Terephthalate
2800	PBX	Private Branch eXchange (company phone system)
2801	pC	picocoulomb
2802	PCAS	Planet-Crossing Asteroid Survey
2803	PCB	see entry
2804	PCCB	Porsche Ceramic Composite Brake
2805	PCCIP	President's Commission on Critical Infrastructure Protection
2806	PCE	PerChlorEthylene
2807	PCIe	Peripheral Component Interconnect Express (computer bus)
2808	PCL	Passive Coherent Location
2809	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2810	PCN	Pitcairn Islands (ISO 3166 trigram)
2811	PCPI	Physician Consortium for Performance Improvement (AMA)
2812	PCR	Polymerase chain reaction
2813	PCSSD	Pulaski County Special School District
2814	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2815	Pd	Palladium
2816	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2817	PDL	Pure Dumb Luck (Texan punk band)
2818	PDN	Pull-Down Network
2819	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2820	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2821	PE	Professional Engineer
2822	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2823	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2824	PEEK	PolyEtherEtherKetone
2825	PEET	Partnerships for Enhancing Expertise in Taxonomy
2826	PEK	PolyEtherKetone
2827	PEPFAR	President's Emergency Plan For AIDS Relief
2828	PER	Peru (ISO 3166 trigram)
2829	perl	usually lower case Practical Extraction and Report Language
2830	PES	PolyEtherSulfone
2831	PEST	UK Public Engagement with Science and Technology
2832	PETE	PolyEthyleneTErephthalate
2833	PETP	PolyEthyleneTerePhthalate
2834	pF	picofarad
2835	PFD	Permanent Fund Dividend = personal flotation device
2836	PFE	Permanent Forest Estate
2837	PfP	Partnership for Peace
2838	Pg	petagram
2839	pg	picogram
2840	PGCE	Postgraduate Certificate in Education
2841	PGD	Pre-implantation Genetic Diagnosis
2842	PGENI	Pharmaco-Genetics for Every Nation Initiative
2843	PGH	Pre-implantation Genetic Haplotyping
2844	PGM	Precision-Guided Munition
2845	PGP	Pretty Good Privacy
2846	PHL	Philippines (ISO 3166 trigram)
2847	PHQ	Patient Health Questionnaire
2848	Pi	Pebi
2849	PIB	PolyIsoButylene
2850	PIC	Person In Charge
2851	PICNIC	Problem In Chair Not In Computer
2852	PICS	Private Investment Capital Subscription
2853	PIF	Partners in Flight
2854	PIG	Pipeline Inspection Gauge
2855	PIN	Personal Identification Number
2856	PINF	People In Need Foundation (Czech charitable organisation)
2857	PIPA	Program on International Policy Attitudes
2858	PIR	Priority Intelligence Requirement
2859	PIRA	Provisional Irish Republican Army
2860	PIREPS	Pilot Reports
2861	PITA	Pain In The Ass
2862	PJ	petajoule
2863	pJ	picojoule
2864	PJHQ	Permanent Joint Headquarters
2865	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2866	PKI	Public Key Infrastructure (cryptography)
2867	PKU	Phenylketonuria
2868	pL	picolitre
2869	PLAID	Precision Location and Identification
2870	PLB	Personal Locator Beacon
2871	PLC	Public Limited Company (British)
2872	PLCC	Plastic Leaded Chip Carrier (electronics)
2873	PLD	Probable Line of Deployment
2874	PLEBS	People Lacking Everyday Basic Skills
2875	PLF	Parachute Landing Fall
2876	PLIF	Planar Laser-Induced Fluorescence
2877	PLL	Phase-Locked Loop (electronics)
2878	PLM	Polarized Light Microscope/Microscopy
2879	PLMBA	Phospholipid Bilayer Microarray
2880	Pln	Platoon
2881	PLO	Palestine Liberation Organization
2882	PLOKTA	Press Lots Of Keys To Abort
2883	PLP	Platonic Life Partner
2884	PLUTO	Pipe Line Under The Ocean
2885	PLW	Palau (ISO 3166 trigram)
2886	pm	picometre
2887	PMC	Primary Motor Cortex
2888	PMI	Positive Material Identification
2889	PMID	PubMed Identifier
2890	PMMA	PolyMethylMethAcrylate
2891	PMS	Premenstrual Syndrome
2892	PMSL	Piss Myself Laughing (Internet shorthand)
2893	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
2894	pN	piconewton
2895	PNAC	Project for the New American Century
2896	PNVS	Pilot Night Vision Sensor
2897	Po	Polonium
2898	PO	Post Office
2899	PO	Purchase Order
2900	POCD	Post-Operative Cognitive Dysfunction
2901	pod	Plain Old Documentation
2902	POFF	Plain Old Flat File
2903	POGO	Project On Government Oversight
2904	POI	Program Of Instruction
2905	POK	Plane Of Knowledge
2906	POLAD	Political Advice
2907	POMDP	Partially observable Markov decision process
2908	PooS	Poo Sniffer (Internet shorthand)
2909	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
2910	POSH	Port Outbound Starboard Home (alleged)
2911	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
2912	POT	Plane Of Tranquility
2913	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
2914	POTUS	President of the United States
2915	POV	Point of view
2916	POW	Prisoner of war
2917	PPASC	(U.S.) Plans and Program Analysis Support Center
2918	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
2919	PPLI	Precise Participant Location & Identification
2920	PPM	Project Planning and Management
2921	PPO	PolyPhenylene Oxide
2922	PPQN	Pulses Per Quarter Note (ditto)
2923	PPQT	Pre-Production Qualification Test
2924	PPV	Pay-per-view
2925	Pr	Pastor, Priest
2926	PR	Public Relations
2927	Prb	Presbyter
2928	PRBO	Point Reyes Bird Observatory
2929	PRC	People's Republic of China
2930	PRD	CERDEC Product Realization Directorate
2931	PRFG	Partial Fog (METAR Code)
2932	PRI	Puerto Rico (ISO 3166 trigram)
2933	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
2934	PRM	Personnel iness Management
2935	PRY	Paraguay (ISO 3166 trigram)
2936	Ps	petasecond
2937	pS	picosiemens
2938	PSG	Pacific Seabird Group
2939	PSI	Portable Source Initiative
2940	PSI	Pounds per square inch
2941	PSS	Personnel System Support
2942	PST	Pacific Standard Time (UTC-8 hours)
2943	PSU	Pennsylvania State University
2944	PsyOp	Psychological Operations
2945	pT	picotesla
2946	Pt	Platinum
2947	PTA	Parent-Teacher Association
2948	PTAL	Public Transport Accessibility Level
2949	PTES	People's Trust for Endangered Species
2950	PTFE	PolyTetraFluoroEthylene
2951	PTI	Pardon the Interruption
2952	PTSD	Post-Traumatic Stress Disorder
2953	Pu	Plutonium
2954	Pub	Publication
2955	PUG	PET Users Group
2956	PUN	Pull-Up Network
2957	PUP	Pull-Up Point
2958	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
2959	PV	petavolt
2960	pV	picovolt
2961	PvE	Player versus Environment
2962	PvP	Player versus Player
2963	PVR	Personal Video Recorder
2964	PvZ	Plants vs. Zombies
2965	PW	Palau (postal symbol; ISO 3166 digram)
2966	pW	picowatt
2967	PWA	Pirates With Attitude
2968	PWBA	Pension and Welfare Benefits Administration
2969	PWC	PieceWise Constant (describing a mathematical function)
2970	PwC	PricewaterhouseCoopers (international accounting firm)
2971	PWL	PieceWise Linear (describing a mathematical function)
2972	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
2973	PWR	Pressurized Water Reactor
2974	PX	Post eXchange
2975	PYF	French Polynesia (ISO 3166 trigram)
2976	PYMWYMI	Put Your Money Where Your Mouth Is
2977	Q1	First Quarter
2978	Q2	Second Quarter
2979	Q3	Third Quarter
2980	Q4	Fourth Quarter
2981	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
2982	Qantas	Queensland And Northern Territory Aerial Services
2983	QAT	Qatar (ISO 3166 trigram)
2984	QB	Quarterback (football)
2985	QCD	Quantum ChromoDynamics
2986	QDR	Quadrennial Defense Review
2987	QEH	Queen Elizabeth's Hospital
2988	QK	Air Canada Jazz (IATA airline designator)
2989	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
2990	QPS	Quark Publishing System
2991	QSCAT	Quick Scatterometer satellite
2992	QSL	Québec Sign Language
2993	QSO	Quasi-Stellar Object
2994	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
2995	Quasar	Quasi-stellar radio source
2996	QUB	Queen's University Belfast
2997	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
2998	QZ	Awair (IATA airline designator)
2999	R2I	Resistance to Interrogation
3000	RA	Radio Australia
3001	Ra	Radium
3002	RAAF	Royal Australian Air Force
3003	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3004	RACK	Risk Aware Consensual Kink (SM phrase)
3005	Racon	RAdar beaCON
3006	RADA	Royal Academy of Dramatic Art
3007	Radar	Radio Detection And Ranging
3008	RadB	Rad51/Dmc1 homologous protein
3009	RADb	Routing Assets Data Base
3010	RADC	Region Air Defence Commander
3011	RAE	UK Royal Aircraft Establishment (-1991)
3012	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3013	RAM	Royal Air Maroc
3014	Ramark	RAdar MARKer
3015	RAOC	Rear Area Operation Centre
3016	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3017	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3018	RATELO	Radiotelephone Operator
3019	Rb	Rubidium
3020	RB	Running Back (football)
3021	RBI	Runs Batted In
3022	RC	see entry
3023	RCAF	Royal Canadian Air Force
3024	RCC	Rescue Co-ordination Centre
3025	RCCO	Royal Canadian College of Organists
3026	RCHA	Royal Canadian Horse Artillery (regiment)
3027	RCMP	Royal Canadian Mounted Police
3028	RD	Radio Disney
3029	RDD	Radiological Dispersion Device
3030	RDM	Remotely Delivered/Deliverable Mine
3031	RDT	Remote Digital Terminal
3032	RDV	Remote Detection Vehicle
3033	Re	Rhenium
3034	RE	Royal Engineers
3035	REACT	Remote Electronically Activated Control Technology
3036	REAM	Retired Educators Association of Minnesota
3037	RECCE	Reconnaissance
3038	REEF	Reef Environmental Education Foundation
3039	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3040	REME	Royal Electrical and Mechanical Engineers
3041	RERC	Rehabilitation Engineering Research Center
3042	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3043	REU	Réunion (ISO 3166 trigram)
3044	Rf	Rutherfordium
3045	RFD	Request for Documentation
3046	RFE	Request for Evaluation
3047	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3048	RFF	Right of First Refusal (legal term)
3049	RFID	Radio Frequency IDentification
3050	RFL	Rugby Football League
3051	RFP	Request for Proposal
3052	RFQ	Request for Quotation
3053	RFT	Request for Tender
3054	RFU	Rugby Football Union
3055	RG	Republican Guard
3056	Rg	Roentgenium
3057	RGB	Red Green Blue (colour model)
3058	RGBI	Red Green Blue Intensity (ditto)
3059	Rh	Rhodium
3060	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3061	RHIC	Relativistic Heavy Ion Collider
3062	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3063	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3064	RHU	Replacement Holding Unit
3065	RI	Rhode Island (postal symbol)
3066	RIAA	Recording Industry Association of America
3067	RIBA	Royal Institute of British Architects
3068	RIFA	Red imported fire ant
3069	RILA	Retail Industry Leaders Association
3070	RIMVS	Retinal Imaging Machine Vision System
3071	RINO	Republican In Name Only[1]
3072	RISC	Reduced Instruction Set Computer
3073	RJD	Reduced Julian Day
3074	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3075	RKO	Radio-Keith-Orpheum Pictures
3076	RLP	Recognised [Operating/Operational] Land Picture
3077	RLS	Restless Leg Syndrome
3078	RLY	Rally Point
3079	RM	see separate disambiguation page
3080	RMC	Robert Menzies College
3081	RMDA	Records Management and Declassification Agency
3082	RMP	Recognised [Operating/Operational] Maritime Picture
3083	RN	Radio Netherlands
3084	Rn	Radon
3085	RNA	RiboNucleic Acid
3086	RNAD	Royal Naval Armaments Depot (UK)
3087	RNPS	Radio Network Planning System
3088	RNZ	Radio New Zealand
3089	RNZI	Radio New Zealand International
3090	ROA	Rate Of Ascent
3091	ROE	Rules Of Engagement
3092	ROFLOL	Rolling On the Floor Laughing Out Loud
3093	ROH	Ring of Honor
3094	ROK	Republic of Korea
3095	ROP	Render Output Pipeline
3096	ROPE	Research Opportunity and Performance Evidence
3097	ROS	Reactive Oxygen Species
3098	ROU	Romania (ISO 3166 trigram)
3099	ROV	Remotely Operated Vehicle
3100	ROZ	Restricted Operations Zone
3101	RPA	Regional Plan Association
3102	RPD	Recognition-Primed Decision-making
3103	RPF	Rwandan Patriotic Front
3104	RPL	Reverse Polish Lisp
3105	rpm	revolutions per minute
3106	RPN	reverse Polish notation
3107	rps	revolutions per second
3108	RPV	Remotely Piloted Vehicle
3109	RQ	Puerto Rico (FIPS 10-4 territory code)
3110	RRB	Railroad Retirement Board
3111	RRN	Recurrence Rate Number
3112	RRP	Recurrent Respiratory Papillomatosis
3113	RRS	Racing Rules of Sailing
3114	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3115	RS	Russia (FIPS 10-4 country code)
3116	RSI	Repetitive Strain Injury
3117	RSJ	Rolled Steel Joist (construction)
3118	RSN	Real Soon Now (coined by author Jerry Pournelle)
3119	RSPB	(UK) Royal Society for the Protection of Birds
3120	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3121	RSR	Required Supply Rate
3122	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3123	RSRI	Red Sands Research Institute
3124	RSS	Really Simple Syndication
3125	RTA	Road traffic accident (British)
3126	RTBF	Radio-Télévision belge de la Communauté française
3127	RTF	Rich Text Format
3128	RTFM	the Fucking/Fine Manual
3129	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3130	RTI	Run-Time Infrastructure (Simulation)
3131	RTL	see entry
3132	RTP	Real-time Transport Protocol
3133	RTS	see entry
3134	RTT	Round Trip Timing
3135	RU	Russia (ISO 3166 digram)
3136	Ru	Ruthenium
3137	RUC	Royal Ulster Constabulary
3138	RUS	Russia (ISO 3166 trigram)
3139	RUSI	Royal United Services Institute for Defence Studies
3140	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3141	RWA	Rwanda (ISO 3166 trigram)
3142	RWH	Rain Water Harvesting
3143	RWR	Radar Warning Receiver
3144	RWS	Remote Weapon Station
3145	RX	Receive
3146	SBNO	Standing but not operating (in reference to amusement parks)
3147	SCOTUS	Supreme Court of the United States
3148	SCROTUS	So-called Ruler of the United States
3149	SDHC	Secure Digital High Capacity
3150	SDXC	Secure Digital eXtended Capacity
3151	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3152	SGOTUS	Second Gentleman of the United States
3153	SHO	Showtime (see also sho.com)
3154	SIRI	Service Interface for Real Time Information
3155	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3156	SLOTUS	Second Lady of the United States (the vice president's wife)
3157	SoCon	Southern Conference (U.S. college sports)
3158	STB	Surface Transportation Board[2]
3159	SWAC	Southwestern Athletic Conference
3160	SWAN	System for Wearable Audio Navigation
3161	SWAT	Special Weapons And Tactics
3162	SWF	Single White Female
3163	Ta	Tantalum
3164	TAACOM	U.S. Theater Army Area Command
3165	TAADCOORD	Theatre Army Air Defence Co-ordinator
3166	TAAR	Trace Amine-Associated Receptor
3167	TAC	U.S. Tactical Air Command (1946-1992)
3168	TACAN	Tactical Air Navigation
3169	TACCO	Tactical Coordinator
3170	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3171	TACDAR	Tactical Detection And Reporting
3172	TACSOP	Tactical SOP (Standing Operating Procedure)
3173	TADIL	Tactical Digital Information Link
3174	TAI	Target[ed] Area of Interest
3175	TAJ	Tom and Jerry
3176	TAJT	Tom and Jerry Tales
3177	TALES	Technical Advice and Lexicon for Enabling Simulation
3178	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3179	TANP	Terrain-Aware Network Planner
3180	TANSTAAFL	There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress)
3181	TAPPS	Texas Association of Private and Parochial Schools
3182	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3183	TAS	Tasmania (postal symbol)
3184	TASER	Thomas A. Swift's Electric Rifle
3185	TASM	Tactical Air-to-Surface Missile
3186	TAT	Tourism Authority of Thailand
3187	TATP	TriAcetone TriPeroxide
3188	TATT	Tired All The Time (medical diagnosis in-joke)
3189	Tb	Terbium
3190	TB	Tuberculosis
3191	TBA	to be announced
3192	TBBPA	TetraBromoBisPhenol-A
3193	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3194	TBF	to be fair
3195	TBH	To Be Honest
3196	TBL	Turkish Basketball League
3197	TBS	Turner Broadcasting System
3198	TBT	Tributyltin
3199	Tc	Technetium
3200	TCAA	Top Counter-Assault Agents
3201	TCAS	Traffic Collision Avoidance System
3202	TCCCS	Tactical Command,Control and Communication System
3203	TCD	Chad (ISO 3166 trigram)
3204	TCHD	Truck Cargo Heavy Duty
3205	TCL	Tool Command Language
3206	TCM	Turner Classic Movies
3207	TCU	Texas Christian University
3208	TCW	Tasty Coma Wife
3209	TCWMS	Tele-Center Workforce Management System
3210	TDA	The Disney Afternoon
3211	TDL	Tactical Data Link
3212	TDM	Time-Division Multiplexing
3213	TDMA	Time Division Multiple Access
3214	TDP	Technology Demonstration Programme
3215	TDRS	Tracking Data and Relay Satellite
3216	Te	Tellurium
3217	TEAL	Tasman Empire Airways Limited
3218	Team	Together everyone achieves more
3219	TEAMS	The East African Marine System (fiber optic cable)
3220	TED	Technology Entertainment Design prize
3221	TENCAP	Tactical Exploitation of National Capabilities
3222	TERS	Tactical Event Reporting System
3223	TES	Tactical Event System
3224	TEST	Thesaurus of Engineering and Scientific Terms
3225	TEU	Twenty-foot equivalent unit (cargo capacity)
3226	TeVeS	Tensor Vector Scalar theory
3227	TFMPP	Trifluorophenylmethylpiperazine
3228	TFR	Total Fertility Rate
3229	TFT	Thin-Film Transistor
3230	Tg	Teragram
3231	TG	Togo (ISO 3166 digram)
3232	TGO	Togo (ISO 3166 trigram)
3233	Th	Thorium
3234	THA	Thailand (ISO 3166 trigram)
3235	THAAD	Terminal High Altitude Area Defence
3236	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3237	THEL	Tactical High Energy Laser ACTD
3238	THG	Tetrahydrogestrinone
3239	TIA	Total Information Awareness initiative
3240	TIA	Transient Ischemic Attack
3241	TIALD	Thermal Imaging and Airborne Laser Designation
3242	TIBS	Tactical Information Broadcast System
3243	TIC	Troops In Contact
3244	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3245	TINC	There Is No Cabal
3246	TIP	Thermal Identification Panel
3247	tits	Toes in the Sand
3248	TJD	Truncated Julian Day
3249	TJK	Tajikistan (ISO 3166 trigram)
3250	TKL	Tokelau (ISO 3166 trigram)
3251	TKM	Turkmenistan (ISO 3166 trigram)
3252	Tl	Thallium
3253	TLA	Three-Letter Abbreviation/Acronym
3254	TLAM	Tomahawk Land Attack Missile
3255	TLATOJL	The Life and Times of Juniper Lee
3256	TLPM	T1 Line Performance Monitor
3257	Tm	Terametre
3258	TMAP	Texas Medication Algorithm Project
3259	TMC	The Movie Channel
3260	TMD	Theatre Missile Defence
3261	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3262	TMI	Too Much Information
3263	TMJ	TemporoMandibular Joint (syndrome)
3264	TMNT	Teenage Mutant Ninja Turtles
3265	TMPG	Transparent Multi-Platform Gateway
3266	TMR	Twin Main Rotors (helicopter type)
3267	TMS	Transcranial Magnetic Stimulation
3268	TMT	Thirty Meter Telescope
3269	TMTOWTDI	There's Than One Way To Do It (from Perl)
3270	TNA	Total Nonstop Action Wrestling
3271	TNO	Trans-Neptunian Object
3272	TOBS	Time of OBServation
3273	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3274	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3275	TOGS	Thermal Observation Gunnery Sight
3276	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3277	TON	Tonga (ISO 3166 trigram)
3278	TOS	Tape Operating System,Terms of service,The Original Series,used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System
3279	TOT	Time On Target
3280	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3281	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3282	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3283	TPI	The point is
3284	TPO	Thrombopoietin
3285	TPS	The Pennington School
3286	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3287	TQ	Top Qualifier (similar to Pole Position in car racing)
3288	TRA	Technology iness Assessment
3289	TRAC	(U.S. Army) TRADOC Analysis Center
3290	TRACON	Terminal Radar Approach Control
3291	TRADOC	(U.S. Army) Training and Doctrine Command
3292	TRANSCOM	U.S. Transportation Command
3293	TRAP	Tactical Receive equipment and related Applications
3294	TRASANA	TRADOC Systems Analysis Agency
3295	TRD	Towed Radar Decoy
3296	TRIGAT	Third Generation Antitank (missile)
3297	TRL	Technology readiness level
3298	Trp	Troop
3299	TRU	Transuranic
3300	TRUEX	Training in Urban Environment Exercise
3301	TRW	Thompson Ramo Wooldridge Inc.
3302	Ts	Terasecond
3303	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3304	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3305	TSEC	Transmission Security Encryption Code
3306	TSL	Transportation Security Laboratory
3307	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3308	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3309	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3310	TSR	Terminate and Stay Resident
3311	TSSIA	The Subject Says It All
3312	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3313	TTCT	Torrance Tests of Creative Thinking
3314	TTFN	Ta Ta For Now
3315	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3316	TTO	Trinidad and Tobago (ISO 3166 trigram)
3317	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3318	TTTEAF	Thomas the Tank Engine and Friends
3319	TTY	TeleTYpewriter (Printer)
3320	TTYL	To You Later (Internet slang)
3321	TTZ	Tetrazolium
3322	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3323	TUC	Trades Union Congress
3324	TUG	TeX Users Group
3325	TUI	Text-based user interface (cf. CLI),among other uses
3326	TUN	Tunisia (ISO 3166 trigram)
3327	TUNS	Technical University of Nova Scotia
3328	TUR	Turkey (ISO 3166 trigram)
3329	TUSK	Tank Urban Survival Kit
3330	TUV	Tuvalu (ISO 3166 trigram)
3331	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3332	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3333	TVA	Tennessee Valley Authority
3334	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3335	TVR	TreVor (Wilkinson) Racing
3336	TVS	Tornado vortex signature
3337	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3338	TWAIN	Technology Without An Interesting Name
3339	TWE	Trans World Entertainment
3340	TWI	The Welding Institute
3341	TWIP	Take What Insurance Pays,When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference
3342	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3343	TWP	Technical Working Paper
3344	TWS	Thermal Weapon Sight,Track While Scan
3345	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3346	TXV	Thermostatic Expansion Valve
3347	TYT	Take Your Time,Internet chat abbreviation
3348	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3349	TZA	Tanzania (ISO 3166 trigram)
3350	TZC	Tetrazolium chloride
3351	U	Uranium
3352	UA	Ukraine (ISO 3166 digram) Unit of Action
3353	UAAP	University Athletic Association of the Philippines
3354	UAB	University of Alabama at Birmingham
3355	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3356	UBC	United Baptist Church,University of British Columbia
3357	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3358	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3359	UCBSA	United Cricket Board of South Africa
3360	UCF	University of Central Florida
3361	UCLA	University of California at Los Angeles
3362	UCLES	University of Cambridge Local Examinations Syndicate
3363	UCR	University of California at Riverside
3364	UCR	University of Costa Rica
3365	UCS	Union of Concerned Scientists
3366	UCSB	University of California at Santa Barbara
3367	UCSD	University of California at San Diego
3368	UDAS	Uppsala-DLR Asteroid Survey
3369	UDDI	Universal Description,Discovery and Integration
3370	UDTS	Uppsala-DLR Trojan Survey
3371	UE	Unit of Employment
3372	UEFA	Union of European Football Associations
3373	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3374	UFC	Ultimate Fighting Championship
3375	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3376	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3377	UGA	Uganda (ISO 3166 trigram)
3378	UGV	Unmanned Ground Vehicle
3379	UHF	Ultra High Frequency
3380	UHMW	Ultra-High Molecular Weight
3381	UHRB	Ultra-High Resolution Building (simulation)
3382	UIC	University of Illinois at Chicago
3383	UID	User ID
3384	UIUC	University of Illinois at Urbana-Champaign
3385	UJTL	Universal Joint Task List
3386	UKIP	United Kingdom Independence Party
3387	UKR	Ukraine (ISO 3166 trigram)
3388	UL	Underwriters Laboratories
3389	ULF	Ultra Low Frequency
3390	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3391	UMCP	Unit Maintenance Collection Point
3392	UMES	University of Maryland Eastern Shore
3393	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3394	UMIST	University of Manchester Institute of Science and Technology
3395	UMTS	Universal Mobile Telecommunications System
3396	UN	United Nations
3397	UNABOM	University and airline bomber (FBI case name)
3398	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3399	UNAMSIL	United Nations Mission in Sierra Leone
3400	UNCF	United Negro College Fund
3401	UNCLOS	United Nations Convention on the Law of the Sea
3402	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3403	UNCTAD	United Nations Conference on Trade and Development
3404	UNDCP	United Nations Drug Control Programme
3405	UNDE	(i/a) Union of National Defence Employees (Canada)
3406	UNDP	United Nations Development Programme
3407	UNEP	United Nations Environment Programme
3408	UNFCCC	United Nations Framework Convention on Climate Change
3409	UNFICYP	United Nations Peacekeeping Force in Cyprus
3410	UNGEGN	United Nations Group of Experts on Geographical Names
3411	UNHCR	United Nations High Commission (er) for Refugees
3412	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3413	UNICRI	United Nations Interregional Crime and Justice Research Institute
3414	UNIDO	United Nations Industrial Development Organization
3415	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3416	UNMIK	United Nations Interim Administration Mission in Kosovo
3417	UNOSOM	United Nations Operations in Somalia
3418	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3419	UNRISD	United Nations Research Institute for Social Development
3420	UNSM	Union of Nova Scotian Municipalities
3421	UNTAC	United Nations Transitional Authority in Cambodia
3422	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3423	UNU	United Nations University
3424	UPdM	Università Popolare della Multimedialità
3425	UPI	United Press International
3426	UPN	United Paramount Network
3427	UPU	Universal Postal Union
3428	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3429	URD	User Requirements Document
3430	URY	Uruguay (ISO 3166 trigram)
3431	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3432	USAF	United States Air Force
3433	USAFSPC	U.S. Air Force Space Command
3434	USAID	United States Agency for International Development
3435	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3436	USAREUR	United States Army Europe
3437	USB	Universal Serial Bus
3438	USCG	United States Coast Guard
3439	USDA	United States Department of Agriculture
3440	USDI	United States Department of the Interior
3441	USDOE	United States Department of Energy
3442	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3443	USEC	United States Enrichment Corporation
3444	USFL	United States Football League
3445	USFWS	United States Fish and Wildlife Service
3446	USGS	United States Geological Survey
3447	USIA	United States Information Agency
3448	USJFCOM	United States Joint Forces Command
3449	USMC	United States Marine Corps
3450	USMNT	United States men's national (soccer) team
3451	USN	United States Navy
3452	USNB	United States Naval Base
3453	USNG	United States National Grid
3454	USNH	United States Naval Hospital
3455	USNI	United States Naval Institute
3456	USNO	U.S. Naval Observatory
3457	USNOFS	United States Naval Observatory Flagstaff Station
3458	USNP	United States Newspaper Program
3459	USNR	United States Navy Reserve
3460	USNS	United States Naval Ship
3461	USNZ	University Sport New Zealand
3462	USPS	United States Postal Service
3463	USPTO	United States Patent and Trademark Office
3464	USS	United States ship (sometimes meaningless; see Star Trek)
3465	USSPACECOM	United States Space Command
3466	USSR	Union of Soviet Socialist Republics
3467	UST	Underground Storage Tank
3468	USTRANSCOM	United States Transportation Command
3469	USWNT	United States women's national (soccer) team
3470	UT	Universal Time
3471	UTEP	University of Texas at El Paso (pronounced you-tep)
3472	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3473	UUA	Unitarian Universalist Association
3474	UUID	Universally Unique Identifier (see also GUID)
3475	UUV	Unmanned Underwater Vehicle
3476	UW	University of Washington
3477	UWO	University of Western Ontario
3478	UWT	Under Water Telephone
3479	UWTG	Under Water Tug
3480	UWW	United World Wrestling
3481	UXO	Unexploded Ordnance
3482	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3483	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3484	UZB	Uzbekistan (ISO 3166 trigram)
3485	VACIS	Vehicle And Container Inspection System
3486	VACIS	Victorian Ambulance Clinical Information System
3487	VANOS	Variable Nockenwelle System
3488	VAO	Vienna Art Orchestra
3489	VBA	Visual Basic for Applications
3490	vCJD	Variant Creutzfeldt-Jakob Disease
3491	VCNO	(U.S.) Vice Chief of Naval Operations
3492	VCofS	Vice Chief of Staff
3493	VCR	Video cassette recorder
3494	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3495	VDFS	VisualSVN Distributed File System (VDFS)
3496	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3497	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3498	VEN	Venezuela (ISO 3166 trigram)
3499	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3500	VfD	s for deletion (used in Wikipedia)
3501	VFM	Value For Money
3502	VFMO	Very Fast Moving Object (astronomy)
3503	VFT	Virtual Function Table
3504	VFW	Veterans of Foreign Wars
3505	VG	British Virgin Islands (ISO 3166 digram)
3506	VGB	British Virgin Islands (ISO 3166 trigram)
3507	VH1	Video Hits One
3508	VHF	Very High Frequency
3509	VIA	Versatile Interface Adapter
3510	VIDS	Visual Information Display System
3511	VII	7 (in Roman numerals)
3512	VIII	8 (in Roman numerals)
3513	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3514	VIP	Very Important Person
3515	VISCII	VIetnamese Standard Code for Information Interchange
3516	VIT	Vellore Institute of Technology
3517	VIVO	Video In Video Out
3518	VJ	Video Jockey
3519	VLAD	Vertical Line Array DIFAR
3520	VLBA	Very Long Baseline Array
3521	VLF	Very Low Frequency
3522	VLIW	Very Long Instruction Word
3523	VLPFC	VentroLateral PreFrontal Cortex
3524	VLPMC	VentroLateral PreMotor Cortex
3525	VLSI	Very-large-scale integration
3526	VM	Vietnam (FIPS 10-4 country code)
3527	VMF	Marine Fighting Squadron of the United States Marine Corps
3528	VMF	Variable Message Format
3529	VMN	VentroMedial Nucleus (neurophysiology)
3530	VN	Vietnam (ISO 3166 digram)
3531	VNIR	Visible and Near InfraRed
3532	VNM	Vietnam (ISO 3166 trigram)
3533	VNS	see entry
3534	VOA	Voice of America
3535	VOIP	Voice Over Internet Protocol
3536	VOLT	Visual OpenType Layout Tool
3537	VON	Victorian Order of Nurses
3538	VOR	Voice of Russia
3539	VOX	Voice Operated oscillator
3540	VPOTUS	Vice President of the United States
3541	VPN	Virtual Private Network
3542	VR	Virtual Reality
3543	VRSG	Virtual Reality Scene Generator
3544	VSHORAD	Very Short Range Air Defence
3545	VSO	Voluntary Services Overseas
3546	VSR	Very Special Relativity
3547	VTC	Video Tele-Conference
3548	VTEC	Variable valve Timing and Electronic lift Control
3549	VTOL	Vertical Take-Off & Landing
3550	VUB	Vrije Universiteit Brussel (Belgian university)
3551	VUT	Vanuatu (ISO 3166 trigram)
3552	VVAF	Vietnam Veterans of America Foundation
3553	VW	Volkswagen
3554	VZ	Verizon Communications (NYSE code)
3555	W3C	World Wide Web Consortium
3556	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3557	WAAF	Women's Auxiliary Air Force (World War II UK)
3558	WACC	Weighted Average Cost of Capital (accounting)
3559	WACS	What-A-Cartoon! Show
3560	WAD	Weapons Alert Designator
3561	WAGGGS	World Association of Girl Guides and Girl Scouts
3562	WAL	see entry
3563	WAN	Wide area network
3564	WAP	Wireless Application Protocol
3565	WAPIMA	What a pain in my ass
3566	WAR	With All Respect
3567	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3568	WAYP	White And Yellow Pages
3569	Wb	Weber
3570	WBC	World Boxing Council
3571	WBE	Work Breakdown Element
3572	WBO	World Boxing Organization
3573	WCBO	World Chess Boxing Organisation
3574	WCBP	World Center for Birds of Prey
3575	WCL	World Confederation of Labour
3576	WCW	World Championship Wrestling
3577	WDIN	Wildlife Disease Information Node
3578	WDWR	Walt Disney World Resort
3579	WEBS	Weapon Effectiveness Battle Simulation
3580	WEC	World Extreme Cagefighting
3581	WEEE	Waste Electrical and Electronic Equipment
3582	WEF	World Economic Forum
3583	WEM	West Edmonton Mall
3584	WEU	Western European Union
3585	WEZ	Weapon Engagement Zone
3586	WF	Wallis and Futuna Islands (ISO 3166 digram)
3587	WFC	Women's Forage Corps (World War II UK)
3588	WFD	Weapon of Focused Destruction
3589	WFF	Wallops Flight Facility
3590	WFI	Water for Injection
3591	WFH	Working from home
3592	WFP	World Food Program
3593	WFZ	Weapons Free Zone
3594	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3595	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3596	WHI	Women's Health Initiative
3597	WHIP	Walks plus hits per inning pitched
3598	WHO	World Health Organisation
3599	WHS	(U.S.) Washington Headquarters Services
3600	WIIFM	What's in it for me?
3601	WIP	Work In Progress
3602	WIPO	World Intellectual Property Organization
3603	WIPP	[Nuclear] Waste Isolation Pilot Plant
3604	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3605	WKYP	Will Keep You Posted
3606	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3607	WLB	Women's Land Brigade (World War II Canada)
3608	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3609	WLOG	Without Loss Of Generality (see WOLOG)
3610	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3611	WMANUS	West Midlands Area National Union of Students
3612	WMD	World Movement for Democracy
3613	WMI	Wildlife Management Institute
3614	WMO	World Meteorological Organization
3615	WNA	World Nuclear Association
3616	WNF	Will Not Fix
3617	WNIT	Women's National Invitation Tournament
3618	WNW	West North-West
3619	WO	Warrant Officer
3620	WOF	Width of Fabric
3621	WOFT	Waste Of Fucking Time
3622	WOFTAM	Waste Of Fucking Time And Money
3623	WOI	Wheels Of Italy
3624	WOM	Write Only Memory
3625	WOS	Wilson Ornithological Society
3626	WOT	Waste Of Time
3627	WP	White Phosphorus (ammunition)
3628	WPB	War Production Board during World War II
3629	WPE	World Pork Expo
3630	WPK	Wider Peacekeeping
3631	WR	Wide Receiver (football)
3632	WRAC	Women's Royal Army Corps (World War II UK)
3633	WRAIR	Walter Reed Army Institute of Research
3634	WRBWWRM	We Best What We Most
3635	WRC	World Rally Championship
3636	WRC	World Religions Conference
3637	WRNG	Warning
3638	WRS	Worldwide Reference System
3639	WRT	NHS Workforce Review Team
3640	WRT	The Linksys routers whose model name start with 'WRT'
3641	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3642	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3643	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3644	WRT	Wireless Ronin Technologies (digital signage)
3645	WRT	World Rally Team
3646	WRT	Writer Response Theory
3647	WSC	Weapon System Catalogue
3648	WSDL	Web Services Description Language
3649	WSJ	(The) Wall Street Journal
3650	WSROC	Western Sydney Regional Organisation of Councils
3651	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3652	WSTC	Women Signallers Territorial Corps (World War II UK)
3653	WSW	West South-West
3654	WTC	World Trade Center
3655	WTF	What the fuck?; also What a Terrible Failure (android)
3656	WTFH	What The Fucking Hell
3657	WTH	What the Hell
3658	WTO	World Trade Organization
3659	WUBU2	What you been up to
3660	WV	West Virginia (postal symbol)
3661	WVA	World Veterinary Association
3662	WVIAC	West Virginia Intercollegiate Athletic Conference
3663	WVR	Women's Volunteer Reserve (World War II UK)
3664	WVSC	Women's Volunteer Service Corps (World War II Canada)
3665	WVU	West Virginia University
3666	WW	see entry
3667	WWE	World Wrestling Entertainment
3668	WWI	World War I
3669	WWII	World War II
3670	WWIII	World War III
3671	WWJD	What would Jesus do?
3672	WWS	Wheaton Warrenville South High School
3673	WWWF	World Wide Wrestling Federation
3674	WXO	Weather [Executive] Officer
3675	WY	Wyoming (postal symbol)
3676	WZ	Swaziland (FIPS 10-4 country code)
3677	XBML	eXtended Business Modelling Language
3678	XC	Ninety (in Roman numerals)
3679	XCBL	XML Common Business Library
3680	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3681	Xe	Xenon
3682	XFA	XML Forms Architecture
3683	XFC	Xtreme Fighting Championships
3684	XFD	Fighter aircraft made by Douglas
3685	Xfe	X File Explorer
3686	XFF	X-Forwarded-For
3687	XFG	Exfoliation glaucoma
3688	XFR	Automobile made by Jaguar
3689	XFT	X FreeType interface library
3690	XG	Automobile made by Hyundai
3691	XGA	Extended Graphics Array
3692	XGP	Extreme Game Player
3693	XHTML	eXtensible Hypertext Markup Language
3694	XI	Eleven (in Roman numerals)
3695	XII	Twelve (in Roman numerals)
3696	XIII	Thirteen (in Roman numerals)
3697	XIV	Fourteen (in Roman numerals)
3698	XIX	Nineteen (in Roman numerals)
3699	XJS	Automobile made by Jaguar
3700	XKB	X keyboard extension
3701	XKE	Automobile made by Jaguar
3702	XKR	Automobile made by Jaguar
3703	XML	eXtensible Markup Language
3704	XMSF	eXtensible Modelling and Simulation Framework
3705	XNA	X-No-Archive,Xeno Nucleic Acid
3706	XNC	X Northern Captain
3707	XNU	X is Not Unix
3708	XP	eXperience Point (role-playing games)
3709	XQJ	XQuery API for Java™
3710	XRAY	X-Ray
3711	XRML	eXtensible Rights Markup Language
3712	XS	Xiaolin Showdown
3713	XSL	eXtensible Style Language
3714	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3715	XUL	XML User Interface Language
3716	XV	Fifteen (in Roman numerals)
3717	XVI	Sixteen (in Roman numerals)
3718	XVII	Seventeen (in Roman numerals)
3719	XVIII	Eighteen (in Roman numerals)
3720	XWF	Xcitement Wrestling Federation
3721	XX	Twenty (in Roman numerals)
3722	Xyl	Xylobium
3723	XZN	Triple square screw driver
3724	y	Yocto-
3725	Y2K	Year Two Thousand
3726	yA	Yoctoampere
3727	Ya	Yottayear
3728	YaBPr	Yet another Brother Pat rant
3729	YABSLAG	Yet another boy singing like a girl
3730	YAC	Youth-Adult Committee
3731	YAFLA	Yet Another Five Letter Abbreviation
3732	YAP	Young Aspiring Professional
3733	YB	Youcef Benzouada (Southern Algerian name)
3734	Yb	Ytterbium
3735	yC	Yoctocoulomb
3736	YC	Yottacoulomb
3737	YDS	Yosemite Decimal System (climbing)
3738	YE	Yemen (ISO 3166 digram)
3739	YEM	Yemen (ISO 3166 trigram)
3740	yF	Yoctofarad
3741	YF	Yottafarad
3742	yg	Yoctogram
3743	Yg	Yottagram
3744	YGCO	Yamaneko Group of Comet Observers
3745	Ygo	Yu-Gi-Oh!
3746	yH	Yoctohenry
3747	YH	Yottahenry
3748	YHBT	You Have Been Trolled
3749	YHII	You Have It Inside
3750	YHS	Ya Hoor sur!
3751	Yi	Yobi
3752	Yippie	Youth International Party + suffix
3753	yJ	Yoctojoule
3754	YJ	Yottajoule
3755	yK	Yoctokelvin
3756	YK	Yottakelvin
3757	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3758	yL	Yoctolitre
3759	YL	Yottalitre
3760	ym	Yoctometre
3761	Ym	Yottametre
3762	YMMD	You Make My Day
3763	yN	Yoctonewton
3764	YN	Yottanewton
3765	YOLO	You Only Live Once
3766	YPA	Yards per Pass Attempt (football statistic)
3767	YPIO	Your Problem Is Obvious
3768	YPO	Young Presidents' Organization
3769	ys	Yoctosecond
3770	yS	Yoctosiemens
3771	Ys	Yottasecond
3772	YS	Yottasiemens
3773	YSI	Young Scots for Independence
3774	yT	Yoctotesla
3775	YTD	Year-To-Date
3776	YTM	Yield to Maturity
3777	YTS	Youth Training Scheme
3778	YTT	Yoshi Topsy-Turvy
3779	Yuppie	Young Urban Professional + suffix
3780	yV	Yoctovolt
3781	YV	Yottavolt
3782	yW	Yoctowatt
3783	YW	Yottawatt
3784	YYH	YuYu Hakusho
3785	z	Zepto
3786	Z	Zetta
3787	zA	Zeptoampere
3788	ZAF	South Africa (ISO 3166 trigram)
3789	ZAMS	Zero age main sequence
3790	ZAS	Zylinder Abschaltung System
3791	ZBT	Zero-Balance Transfer (accounting)
3792	zC	Zeptocoulomb
3793	ZC	Zettacoulomb
3794	ZCM	(n) ZENworks Configuration Management
3795	ZCMK	Zone Control Master Key
3796	ZCU	Zimbabwe Cricket Union
3797	\a	Atto-