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	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83	ACCD	American Coalition of Citizens with Disabilities
84	ACCS	Air Communications and Control Squadron
85	ACDA	Arms Control & Disarmament Agency
86	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
88	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
90	ACHT	Average Call Hold Time
91	ACINT	Acoustic Intelligence
92	ACK	Acknowledge (telecommunications; cf. NAK)
93	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94	ACLJ	American Center for Law and Justice
95	ACLOS	Automatic CLOS (missile control system)
96	ACLS	American Council of Learned Societies
97	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98	ACM	many,including Association for Computing Machinery; see entry
99	ACMC	(U.S.) Assistant Commandant of the Marine Corps
100	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101	ACNA	Anglican Church in North America
102	ACO	Airspace Control Order
103	ACOBA	Advisory Committee on Business Appointments
104	ACOG	American College of Obstetricians and Gynecologists
105	ACOM	(U.S.) Atlantic Command
106	ACORN	Association of Community Organizations for Reform Now
107	ACP	African,Caribbean and Pacific Group of States,Air Control Point
108	ACR	Advanced Concepts and Requirements
109	ACRI	African Crisis Initiative
110	ACRT	Advanced Concepts Research Tool simulator
111	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112	ACSC	Army Command and Staff College (various nations)
113	ACST	American Cooperative School of Tunis
114	ACST	Australian Central Standard Time
115	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
116	ACTD	Advanced Concept Technology Demonstration
117	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)
118	ACTU	Australian Council of Trade Unions
119	ACU	American Conservative Union
120	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
121	AD	Air Defence,Andorra (ISO 3166 digram),Anno Domini (Latin,'In the year of our Lord')
122	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124	ADAGE	Air Defense Air to Ground Engagement (simulation)
125	ADAP	AIDS Drug Assistance Program
126	ADAS	Asiago-DLR Asteroid Survey
127	ADAT	Alesis Digital Audio Tape (recording format)
128	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129	ADB	Asian Development Bank
130	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132	ADDIE	Analyze Design Develop Implement and Evaluate
133	ADDNS	Advanced Deployable Day/Night Simulation
134	ADGB	Air Defence of Great Britain
135	ADHD	Attention-Deficit Hyperactivity Disorder
136	ADHS	Attention-Deficit Hyperactivity Syndrome
137	ADI	Acceptable/Allowable Daily Intake
138	ADIZ	Air Defence Identification Zone
139	ADL	Anti-Defamation League
140	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141	ADOA	Air Defence Operations Area
142	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
144	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
145	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
146	ADT	Atlantic Daylight Time (UTC−3 hours)
147	ADTB	Army Doctrine and Training Bulletin
148	ADW	Air Defence Warning
149	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
150	AEDT	Australian Eastern Daylight Time
151	AEF	American Expeditionary Force
152	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
153	AESR	Aeronautical Equipment Service Record
154	AEST	Australian Eastern Standard Time
155	aet	After extra time (Football)
156	AEW	Airborne Early Warning,Airborne Electronic Warfare
157	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
158	aF	Attofarad
159	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160	AFAIC	As Far As I'm Concerned
161	AFAICT	As Far As I Can Tell
162	AFAIK	As Far As I Know
163	AFAIR	As Far As I Remember/Recall
164	AFATDS	Advanced Field Artillery Tactical Data System
165	AFCEA	Armed Forces Communications and Electronics Association
166	AFDB	African Development Bank
167	AFES	Automatic Fire Extinguishing System
168	AFG	Afghanistan (ISO 3166 trigram)
169	AFIST	Abrams Full Crew Interactive Skills Trainer
170	AFJ	April Fool's Joke
171	AFK	Away From Keyboard (Internet chat abbreviation)
172	AFLAC	American Family Life Assurance Company of Columbus
173	AFO	Association of Field Ornithologists
174	AFOSR	U.S. Air Force Office of Scientific Research
175	AFQT	Armed Forces Qualification Test
176	AFRC	Air Force Reserve Command
177	AFRL	Air Force Research Laboratory
178	AFROTC	Air Force Reserve Officer Training Corps
179	AFRTS	Armed Forces Radio and Television Service
180	AFSCN	U.S. Air Force Satellite Control Network
181	AFSPC	Air Force Space Command
182	AFT	American Farmland Trust
183	AFV	armoured fighting vehicle
184	ag	Attogram
185	Ag	Silver (Latin argentum)
186	AGARD	Advisory Group for Aerospace Research and Development
187	AGARDograph	Advanced Guidance for Alliance Research and Development publication
188	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
189	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
190	AGC	Adjutant General's Corps (British Army)
191	AGDC	Australian Game Developers' Conference
192	AGI	Auxiliary Group Intelligence
193	AGL	Above Ground Level
194	AGM	Annual General Meeting
195	AGN	Active Galactic Nucleus
196	AGO	Angola (ISO 3166 trigram)
197	AGP	Accelerated Graphics Port
198	AGRICOLA	Agriculture Online Access
199	AGS	Alaska Ground Station (LandSat)
200	AGTS	Advanced Gunnery Training System
201	AGU	American Geophysical Union
202	AGW	Autonomous Guided Weapon
203	Ah	Ampere-hour
204	AH	Attack Helicopter
205	aH	Attohenry
206	AHA	American Heart Association
207	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
208	AHEC	Australian Health Ethics Committee
209	AHPCRC	Army High Performance Computing Research Center
210	AHQ	Air Headquarters
211	AHRQ	Agency for Healthcare Research and Quality
212	AHS	American Housing Survey
213	AIAA	American Institute of Aeronautics and Astronautics
214	AICD	Australian Institute of Company Directors
215	AICMFP	And I Claim My Five Pounds
216	AID	U.S. Agency for International Development
217	AIDS	Acquired Immune Deficiency Syndrome
218	AIM	Australian Institute of Management
219	AIMP	Aurora Incremental Modernization Project
220	AIPAC	American Israel Public Affairs Committee
221	AIR	Aircraft Inventory Record
222	AIRFA	American Indian Religious Freedom Act
223	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
224	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
225	aJ	Attojoule
226	AJ	Azerbaijan (FIPS 10-4 country code)
227	Ajax	Asynchronous JavaScript And XML
228	AJD	Astronomical Julian day
229	AJP	Allied Joint Publication
230	AJPW	All Japan Pro Wrestling
231	AK	Alaska (postal symbol)
232	aK	Attokelvin
233	AKA	Above knee amputation (orthopaedic usage)
234	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
235	AKST	Alaska Standard Time (UTC−9 hours)
236	Al	Aluminium
237	aL	Attolitre
238	ALA	Åland Islands (ISO 3166 trigram)
239	ALAP	As Long/Late As Possible
240	ALARM	Air-Launched Anti-Radar Missile
241	ALB	Albania (ISO 3166 trigram)
242	ALD	Accounting Line Designator (nuclear weapon targeting)
243	ALGOL	ALGOrithmic Language
244	ALPA	Air Line Pilots Association
245	ALSHS	Abraham Low Self-Help Systems
246	ALSP	Aggregate Level Simulation Protocol
247	ALTE	Association of Language Testers in Europe
248	Am	Americium
249	AM1	Airman 1st class
250	AMCB	U.S. Army/Marine Corps Board
251	AML	Acute Myeloid Leukaemia
252	AMLCD	Active Matrix Liquid Crystal Display
253	AMO	Atlantic Multidecadal Oscillation
254	AMOLED	Active-matrix organic light-emitting diode
255	AMRAAM	Advanced Medium-Range Air-to-Air Missile
256	AMSAA	U.S. Army Materiel Systems Analysis Activity
257	AMSO	U.S. Army Model and Simulation Office
258	AMSU	Advanced Microwave Sounding Unit
259	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
260	aN	Attonewton
261	ANC	African National Congress
262	AND	Andorra (ISO 3166 trigram)
263	ANFO	Ammonium nitrate/fuel oil (explosive)
264	ANGLiCo	Air/Naval Gunfire Liaison Company
265	ANL	Argonne National Laboratory
266	ANM	Acoustic Noise Monitor
267	ANOVA	ANalysis Of VAriance
268	ANS	Applied and Natural Sciences
269	ANSI	American National Standards Institute
270	ANTM	America's Next Top Model
271	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
272	ANZ	Australia and New Zealand Banking Group
273	ANZAC	Australian and New Zealand Army Corps
274	AOD	Adrenalin O.D. (punk rock band)
275	AOI	Angle Of Incidence Arab Organization for Industrialization
276	AOL	America OnLine
277	AOR	Area of Responsibility
278	AOSTH	Adventures of Sonic the Hedgehog
279	AOTS	Attack of the Show!
280	AOU	American Ornithologists' Union
281	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
282	APB	All Points Bulletin (police jargon)
283	APEC	Asia Pacific Economic Cooperation
284	APEDS	AMSAA Performance Estimates Data System
285	APEX	Applied Physics Express
286	APHA	American Public Health Association
287	APHIS	Animal and Plant Health Inspection Service
288	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
289	APOD	Aerial Port (Airport) Of Debarkation
290	APOE	Aerial Port (Airport) Of Embarkation
291	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
292	APP	Allied Procedural Publication
293	APR	Annual Percentage Rate
294	AQIM	Al-Qaeda in the Islamic Maghreb
295	Ar	Argon
296	ARAG	Advanced Research and Assessment Group
297	ARB	Administrative Review Board
298	ARBA	Army Review Boards Agency
299	ARCA	Automobile Racing Club of America
300	ARCENT	United States Army Central Command
301	ARDA	Advanced Research and Development Activity (became DTO 2006)
302	ARF	ASEAN Regional Forum
303	ARG	Argentina (ISO 3166 trigram)
304	ARH	Armed Reconnaissance Helicopter
305	ARNet	Acquisition Reform Network
306	ARP	Applied Research Programme
307	ARPA	Advanced Research Projects Agency
308	ARRC	ACE Rapid Reaction Corps
309	ARRF	Allied Rapid Reaction Force
310	ARRL	American Radio Relay League
311	ARSC	Arctic Region Supercomputing Center
312	ARSPACE	U.S. Army Space Command
313	ARTCC	Air Route Traffic Control Center
314	AS	ActionScript
315	As	Arsenic
316	aS	Attosiemens
317	ASAP	As Soon As Possible
318	ASBO	Anti-Social Behaviour Order
319	ASCII	American Standard Code for Information Interchange
320	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
321	ASEAN	Association of Southeast Asian Nations
322	ASFAR	Americans for a Society Free of Age Restrictions
323	ASG	Area Support Group
324	ASN	Associate of Science in Nursing
325	ASPI	Australian Strategic Policy Institute
326	ASRAAM	Advanced Short-Range Air-to-Air Missile
327	ASSC	Association for the Scientific Study of Consciousness
328	AST	Atlantic Standard Time (UTC−4 hours)
329	ASTIA	Armed Services Technical Information Agency
330	ASTM	American Society for Testing and Materials
331	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
332	ASUW	AntiSUrface Warfare
333	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
334	ASW	AntiSubmarine Warfare
335	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
336	ASX	Advanced Stream Redirector,Australian Securities Exchange
337	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
338	At	Astatine
339	aT	Attotesla
340	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
341	ATAC	Air Transportable Acoustic Communications
342	ATACMS	Army TACtical Missile System
343	ATAPI	Advanced Technology Attachment Packet Interface
344	ATAS	Air-To-Air Stinger (missile)
345	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
346	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
347	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
348	ATCCIS	Army Tactical Command and Control Information System
349	ATESS	Aerospace and Telecommunications Engineering Support Squadron
350	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
351	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
352	ATGM	Anti-Tank Guided Missile
353	ATGW	Anti-Tank Guided Weapon
354	ATK	Attack
355	ATL	Atlanta,Georgia,the largest city and capital of Georgia
356	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
357	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
358	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
359	ATO	Air Tasking Order,Australian Taxation Office
360	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
361	ATSD	(U.S.) Assistant Secretary of Defense
362	ATSDR	Agency for Toxic Substances and Disease Registry
363	ATV	All-Terrain Vehicle
364	ATWA	Air,Trees,Water,Animals
365	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
366	Au	Gold (Latin Aurum)
367	AUS	Australia (ISO 3166 trigram)
368	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
369	Auslan	Australian Sign Language
370	AUT	Austria (ISO 3166 trigram)
371	AUTL	Army Universal Task List
372	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
373	Av	Aperture value (photographic mode)
374	aV	Attovolt
375	AVA	American Viticultural Area
376	AVB	Audio Video Bridging
377	AVDLR	Aviation Depot Level Repair
378	AVGP	Armoured Vehicle, General Purpose
379	AVIM	Aviation Intermediate Maintenance
380	AVLB	Armoured Vehicle Launched Body
381	AVM	Air Vice-Marshal, Arteriovenous malformation
382	AVO	Apprehended Violence Order
383	AVP	Arubaanse Volkspartij
384	AVP	Association of Volleyball Professionals
385	AVRE	Armoured Vehicle Royal Engineers
386	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
387	AVUM	Aviation Unit Maintenance
388	AVVO	Acute Vaginal Venereal Outbreak
389	AW	Aruba (ISO 3166 digram)
390	aW	Attowatt
391	AWA	American Wrestling Association
392	AWC	Air Warfare Centre
393	AWD	All Wheel Drive
394	AWE	Advanced Warfighting Experiment
395	AWP	Awaiting Parts (SM&R code)
396	AWSIM	Air Warfare SIMulation
397	AWST	Australian Western Standard Time
398	AWW	Above Water Warfare
399	AX	Åland Islands (ISO 3166 digram)
400	AXP	Ambulance eXchange Point
401	AY	Antarctica (FIPS 10-4 territory code)
402	AYBABTU	All Your Base Are Belong To Us
403	AYU	As Yet Unknown
404	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
405	AZE	Azerbaijan (ISO 3166 trigram)
406	AZUR	Actions en zone urbaine (French for: Urban Operations)
407	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]
408	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
409	BBB	Better Business Bureau,Blood-brain barrier
410	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
411	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
412	BBN	Bolt,Beranek and Newman
413	BBQ	Barbecue
414	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)
415	BBYO	B'nai B'rith Youth Organization
416	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
417	BCA	Bachelor of Computer Application,Black Coaches & Administrators
418	BCC	Blind Carbon Copy
419	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
420	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
421	BEL	Belgium (ISO 3166 trigram)
422	BEN	Benin (ISO 3166 trigram)
423	BEO	Banquet Event Order
424	BERC	Business Environmental Resource Center
425	BER	Bit Error Rate
426	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
427	BHR	Bahrain (ISO 3166 trigram)
428	BNF	Backus-Naur Form (computing), British National Formulary
429	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
430	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
431	BNS	Bank of Nova Scotia
432	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
433	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
434	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
435	BoAML	Bank of America Merrill Lynch
436	BOC	British Orthodontic Society, British Oxygen Company
437	BÖC	Blue Öyster Cult
438	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
439	BOFH	Bastard Operator From Hell
440	BOGA	Bend Over and Grab Ankles
441	BOGOF	Buy One,Get One Free
442	BOGs	Bunch of Guys
443	BOI	Balance Of Investment,Basis Of Issue
444	BOL	Bolivia (ISO 3166 trigram)
445	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
446	BOPD	Barrel of Oil Per Day
447	BOS	Battlefield Operating System
448	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
449	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
450	BPV	Battlefield Planning Visualization,Bovine papillomavirus
451	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)
452	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
453	BRA	Brazil (ISO 3166 trigram)
454	BRAG	Bicycle Ride Across Georgia
455	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
456	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
457	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
458	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
459	BSoD	Blue Screen of Death (distinct from BSD)
460	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
461	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
462	BSW	British Standard Whitworth (screw thread)
463	BSX	Bendigo Stock Exchange
464	BTO	Built To Order
465	BTP	British Transport Police
466	BTU	British Thermal Unit
467	BTW	By The Way
468	BUAV	British Union for the Abolition of Vivisection
469	BUNO	Bureau Number (aircraft serial number)
470	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
471	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
472	BVD	Bradley,Voorhees & Day (underwear manufacturer)
473	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
474	BW	Bring Wedges (ISO digram)
475	BW	Botswana (ISO 3166 digram)
476	BWA	Botswana (ISO 3166 trigram)
477	BWARS	Bees,Wasps & Ants Recording Society
478	BWC	Biological and Toxin Weapons Convention
479	BWR	Boiling-Water Reactor
480	BX	Base eXchange
481	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
482	BYOC	Bring Your Own Computer (play on BYOB)
483	BYOF	Bring Your Own Flask
484	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
485	BYU	Brigham Young University
486	BZ	Belize (ISO 3166 digram)
487	BZP	Benzylpiperazine
488	C	Carbon, Coulomb, One Hundred (in Roman numerals)
489	c	Centi
490	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
491	c2c	the British rail company formerly known as LTS Rail
492	Ca	Calcium
493	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
494	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
495	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
496	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
497	CACM	Central American Common Market
498	CACM	Communications of the ACM
499	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
500	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
501	CADPAT	CAnadian Disruptive PATtern
502	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
503	CAEn	Close Action Engagement (constructive simulation)
504	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
505	CAFAD	Combined Arms For Air Defence
506	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
507	CAFE	Corporate Average Fuel Economy standard
508	CAI	Computer Assisted Instruction
509	CAIR	Council on American-Islamic Relations
510	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
511	CALL	Center for Army Lessons Learned
512	CALM	Communications,Air-interface,Long and Medium range
513	CalPERS	California Public Employees' Retirement System
514	Caltrans	California Department of Transpotation
515	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
516	CAMRA	CAMpaign for Real Ale
517	CAN	Canada (ISO 3166 trigram)
518	CANDU	CANada Deuterium Uranium (nuclear reactor design)
519	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
520	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
521	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)
522	CARMONETTE	Computerized Monte Carlo Simulation
523	CARP	Computed Air Release Point
524	CART	Championship Auto Racing Teams (now defunct)
525	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
526	CASA	Civil Aviation Safety Authority
527	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
528	CASS	Command Activated Sonobuoy System
529	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
530	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
531	CAT	Community Acceptance Testing
532	CATK	Counterattack
533	CATS	Computer Active Technology Suspension
534	CATT	Combined Arms Tactical Trainer
535	CAV	Cavalry
536	CAW	Canadian Auto Workers (trade union)
537	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
538	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
539	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
540	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
541	CBLA	Comparative bullet lead analysis
542	CBM	Canadian Baptist Ministries
543	CBM	Commodore Business Machines
544	CBML	Coalition Battle Management Language
545	CBN	CardsApp Brand Number
546	CBOL	Consortium for the Barcode of Life
547	CBOT	Chicago Board of Trade
548	CBR	Case-Based Reasoning
549	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
550	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
551	CBS	Columbia Broadcasting System,Corps Battle Simulation
552	CBUS	Columbus,Ohio
553	CC	carbon copy
554	CCA	Counter Command Activity
555	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
556	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
557	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
558	CCF	Cartoon Cartoon Fridays
559	CCG	Canadian Coast Guard,Collectible Card Game
560	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
561	CCGH	Canadian Coast Guard Hovercraft
562	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
563	CCH	Computer-Controlled Hostile
564	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)
565	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
566	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
567	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
568	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)
569	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
570	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
571	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
572	CCOP	Coalition Common Operating/Operational Picture
573	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
574	CCPA	Consumer Credit Protection Act
575	CCR	Creedence Clearwater Revival
576	CCRAp	Canadian Conservative Reform Alliance party
577	CCRP	Command and Control Research Program
578	CCRTS	Command and Control Research and Technology Symposium
579	CCSCS	Consultative Committee for Space Data Systems
580	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
581	CCSK	Cyclic Code Shift Keying
582	CCT	Current Commitments Team
583	Cd	Cadmium
584	cd	Candela
585	CD	Compact Disc
586	CD1	Cluster of Differentiation 1 (a small gene family)
587	CDA	UK Centre for Defence Analysis
588	CDD	Capabilities Development Document
589	CDE	Chemical Defence Equipment
590	CDipAF	Certified Diploma in Accounting and Finance
591	CDL	Commercial driver's license
592	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
593	CDMA	Code Division Multiple Access
594	CDMSII	Cryogenic Dark Matter Search II
595	Cdr	Commander
596	CDT	Central Daylight Time (UTC−5 hours)
597	Cdt	Commandant
598	Ce	Cerium
599	CE	Christian/Common Era
600	CEA	Campaign Effectiveness Analysis
601	CECOM	U.S. Army Communications and Electronics Command
602	CEI	Competitive Enterprise Institute
603	CENTCOM	United States Central Command
604	CENTO	Central Treaty Organization (Baghdad Pact)
605	CEO	Chief Executive Officer
606	CEP	Circular Error Probable
607	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
608	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
609	CERT	Computer Emergency Response Team
610	CESS	Centre for Earth Science Studies (India)
611	CEST	Central European Summer Time
612	CET	Central European Time
613	CEWC	Council for Education in World Citizenship
614	Cf	Californium
615	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
616	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
617	CFAR	Christine's,Federal Acquisition Regulation
618	CFC	ChloroFluoroCarbon,Canadian Fish Company
619	CFES	Continuous Flow Electrophoresis System
620	CFFZ	Call For Fire Zone
621	CFG	Context-free grammar,Control flow graph
622	CFHT	Canada-France-Hawaii Telescope
623	CFI	Center for Inquiry (CSICOP)
624	CFL	Canadian Football League,Co-ordinated Fire Line
625	CFLCC	Coalition Forces Land Component Command
626	CFM	Certified Facilities Manager
627	CFO	Chief Financial Officer
628	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
629	CFRP	Carbon fibre reinforced plastic
630	CFS	Chronic Fatigue Syndrome
631	CFSP	Common Foreign and Security Policy
632	CFU	Colony Forming Unit in Microbiology
633	CFV	Cavalry Fighting Vehicle
634	CFZ	Critical Friendly Zone
635	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
636	CGH	Comparative Genomic Hybridisation
637	CGIG	Cross-Government Implementation Group
638	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
639	CGS	Chief of the General Staff
640	CGT	Capital Gains Tax
641	ch	ch(L) is used to denote the Chern character of a line bundle
642	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
643	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
644	CHAOS	Cambridge Heart Anti-Oxidant Study
645	CHAPS	Clearing House Automated Payment System
646	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
647	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
648	CHI	Columbia Helicopters,Inc
649	CHiP	California Highway Patrol
650	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
651	CHL	Chile (ISO 3166 trigram)
652	CHLA	Core Historical Literature of Agriculture
653	CHN	China (ISO 3166 trigram)
654	CHOGM	Commonwealth Heads of Government Meeting
655	CHPSO	California Hospital Patient Safety Organization
656	CHRS	Canadian Heart Rhythm Society
657	CHT	Certified Hand Therapist
658	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
659	Ci	Curie
660	CIA	Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
661	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
662	CIB	Complete In Box (Internet auction/trading listings)
663	CIBC	Canadian Imperial Bank of Commerce
664	CID	Certified Interior Designer
665	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
666	CINC	Commander in Chief
667	CINEOS	Campo Imperatore Near-Earth Object Survey
668	CIPE	(European) Centre for International Political Economy
669	CIR	(Commander's) Critical Information Requirements
670	CIR	Corotating Interaction Region
671	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
672	CISA	(U.S.) C4I Integration Support Activity
673	CISB	Complete In Sealed Box (Internet auction/trading listings)
674	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
675	CISSP	Certified Information Systems Security Professional
676	CIV	Côte d'Ivoire (ISO 3166 trigram)
677	CIVPOP	Civilian Population
678	CIWS	Close-In Weapon System
679	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
680	CJC	Canadian Jewish Congress,Cold Junction Compensation
681	CJCS	Chairman of the Joint Chiefs of Staff
682	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
683	CJO	Chief of Joint Operations
684	CJTF	Combined Joint Task Force
685	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
686	CKA	commonly known as, Canada Kicks Ass
687	CKND	Codename: Kids Next Door
688	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
689	Cl	Chlorine
690	CLA	Clutterers Anonymous
691	CLEC	Competitive Local Exchange Carrier
692	CLEMARS	California Law Enforcement Mutual Aid Radio System
693	CLIC	Compact LInear Collider
694	CLO	Cornell Lab of Ornithology
695	CLOS	Command to Line-Of-Sight (missile control system)
696	CLPFC	CentroLateral PreFrontal Cortex
697	CLRP	College Loan Repayment Program
698	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
699	Cm	Curium
700	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
701	CMHC	Canada Mortgage and Housing Corporation
702	CMIIAW	Correct me if I am wrong
703	CMIS	Common management information service
704	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
705	CMM	Capability Maturity Model
706	CMMC	Corps Materiel Management Centre
707	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
708	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
709	CMP	Common [Operating/Operational] Maritime Picture
710	CMPD	Charlotte Mecklenburg Police Department
711	CMPD	Chronic Myeloproliferative Disease
712	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
713	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
714	CMT	Country Music Television
715	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
716	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)
717	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
718	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
719	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
720	CNBC	Consumer News and Business Channel
721	CND	Campaign for Nuclear Disarmament,Computer Network Defence
722	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
723	CNF	Cost and Freight
724	CNI	Clinical Nursing Intern
725	CNI	Communications,Navigation and Identification
726	CNN	Cable News Network,Cellular Nonlinear Network
727	CNV	Copy-Number Variable (genetics)
728	Co	Cobalt
729	COB	Close Of Business [day]
730	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
731	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
732	CoDA	Co-Dependents Anonymous
733	COGENT	Cognitive Objects within a Graphical EnviroNmenT
734	COIL	Chemical Oxygen Iodine Laser
735	COK	Cook Islands (ISO 3166 trigram)
736	COL	Colombia (ISO 3166 trigram)
737	COLA	Cost Of Living Adjustment
738	CONAD	U.S. Continental Air Defense Command
739	CONUS	Continental United States
740	COO	Chief Operating Officer
741	COPE	U.K. Committee On Publication Ethics
742	COPUS	U.K. Committee on the Public Understanding of Science
743	CORD	Common Operational Requirements Document
744	CORE	Consortium for Oceanographic Research and Education
745	COS	Cooper Ornithological Society
746	COSER	COoperative SERvice
747	CoT	Car of Tomorrow (former NASCAR race car design)
748	COTS	Commercial Off The Shelf
749	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
750	CPA	Certified Public Accountant
751	CPCU	Certified Property Casualty Underwriter
752	CPD	Capabilities Production Document
753	CPE	Certificate of Proficiency in English
754	CPE	Certified Professional Ergonomist
755	CPF	Calibration Parameter File,Canadian Patrol Frigate
756	CPG	Clinical Practice Guideline
757	CPIM	Certification on Production and Inventory Management
758	CPIR	Computationally-Private Information Retrieval
759	CPON	Certified Pediatric Oncology Nurse
760	CPPCC	Chinese People's Political Consultative Conference
761	CPR	Canadian Pacific Railway
762	CPR	Cardiopulmonary resuscitation
763	CPSM	Continuous Phase Shift Modulation
764	CPSU	Communist Party of the Soviet Union
765	CPT	Contingency Planning Team
766	CPU	Contract Postal Unit
767	CPV	Cape Verde (ISO 3166 trigram)
768	CPX	Command Post eXercise
769	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
770	Cr	Chromium
771	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
772	CRAM	Combined Radiometric Correction Model
773	CRD	Capstone Requirements Document
774	CREB	Cyclic AMP-response Element Binding (protein)
775	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
776	CREN	Christian Real Estate Network Real Estate Association
777	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
778	CRIPL	Consolidated Remain-In-Place List
779	CRM	Cardiac Rhythm Management,Customer Relationship Management
780	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
781	CRP	Committee for the Re-Election of the President,Control and Reporting Post
782	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
783	CRTC	Canadian Radio-television and Telecommunications Commission
784	Cs	Caesium
785	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
786	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
787	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
788	CSG	Corps Support Group
789	CSI	see entry
790	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
791	CSIP	Commercial Stable Image Platform (AMD)
792	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
793	CSL	U.K. Central Science Laboratory
794	CSPI	Center for Science in the Public Interest
795	CSR	Control Supply Rate
796	CSR	Corporate Social Responsibility
797	CSRC	Conflict Studies Research Centre
798	CSRF	Cross-Site Request Forgery
799	CST	Central Standard Time (UTC−6 hours)
800	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)
801	CTBT	Comprehensive [Nuclear] Test Ban Treaty
802	CTDB	Compact Terrain Data Base (file format)
803	CTGF	connective tissue growth factor
804	CTI	Co-operative Target Identification
805	CTIL	Critical Tracked Items List
806	CTIS	Central Tire Inflation System
807	CTMS	Clinical Trial Management System
808	CTSS	Compatible Time-Sharing System
809	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
810	CTVT	Canine Transmissible Venereal Tumour
811	Cu	Copper (Latin Cuprum)
812	CUB	Cuba (ISO 3166 trigram)
813	CUCV	Commercial Utility Cargo Vehicle
814	CUPS	Common Unix Printing System
815	CUPW	Canadian Union of Postal Workers
816	CUREA	Consortium for Undergraduate Research and Education in Astronomy
817	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
818	CUW	Curaçao (ISO 3166 trigram)
819	CV	curriculum vitae (résumé)
820	CVLL	Crypto Variable Logic Label
821	CVSD	Continuous Variable Slope Delta (modulation)
822	CVT	Continuously Variable Transmission
823	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
824	CWC	Chemical Weapons Convention
825	CWRU	Case Western Reserve University
826	CWS	Canadian Wildlife Service
827	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
828	CXR	Christmas Island (ISO 3166 trigram)
829	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
830	CYM	Cayman Islands (ISO 3166 trigram)
831	CZE	Czech Republic (ISO 3166 trigram)
832	CZF	(Christian Zombie Fan)
833	CZMA	(US) Coastal Zone Management Act
834	d	Deci
835	D	Deuterium
836	DAFIF	Digital Aeronautical Flight Information File
837	DAK	Disney's Animal Kingdom
838	DAO	Division Ammunition Officer
839	DARE	Drug Abuse Resistance Education
840	DARO	(U.S.) Defense Airborne Reconnaissance Office
841	DARPA	U.S. Defense Advanced Research Projects Agency
842	DAS	Defensive Aids Suite
843	DASD	(U.S.) Deputy Assistant Secretary of Defense
844	DASL	Datapoint's Advanced Systems Language
845	DAU	(U.S.) Defense Acquisition University
846	DAWN	(U.S.) Drug Abuse Warning Network
847	dB	Decibel
848	DB	Deutsche Bahn
849	Db	Dubnium
850	DBA	De Bellis Antiquitatis (miniature wargaming rules)
851	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
852	DBDO	Desert BDO
853	DBE	Dame Commander of the Order of the British Empire
854	DBF	Detection By Fire (weapon launch signature)
855	DBR	De Bellis Renationis (miniature wargaming rules)
856	DBRA	Davis-Bacon Related Acts
857	DBS	Direct Broadcast Services (television)
858	DCAA	(U.S.) Defense Contract Audit Agency
859	DCAS	Devon and Cornwall Archery Society
860	DCC	Dallas Christian College
861	DCD	[Organ] Donation after Cardiac Death
862	DCE	Data Communication Equipment
863	DCFC	Death Cab for Cutie
864	DCL	Disney Cruise Line
865	DCN	Deacon
866	DCOM	Disney Channel Original Movie
867	DCSOPS	Deputy Chief of Staff for Operations and plans
868	DCW	Digital Chart of the World
869	DCYSC	Discovery Channel Young Scientist Challenge
870	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
871	DDA	Deputy District Attorney
872	DDN	U.S. Defense Data Network
873	DDS	Doctor of Dental Surgery
874	DEA	Drug Enforcement Administration
875	DEA	Drug Enforcement Agency
876	DeCA	(U.S.) Defense Commissary Agency
877	DEFCON	Defence readiness condition
878	DELT	Dual Ended Line Test (ing)
879	DEPSECDEF	(U.S.) Deputy Secretary of Defense
880	DERA	British Defence Evaluation and Research Agency (1995-2001)
881	DES	Deep Ecliptic Survey
882	DEU	Germany (ISO 3166 trigram)
883	DFAS	(U.S.) Defense Finance and Accounting Service
884	DFCB	Data Format Control Book
885	DfID	UK Department for International Development
886	DFM	Discrete Field Model see Superluminal motion
887	DFM	Dynamic Flowgraph Methodology
888	DFSP	Dermatofibrosarcoma protuberans
889	DfT	UK Department for Transport
890	DGPS	Differential GPS
891	DGZ	Desired Ground Zero
892	DHA	DocosaHexaenoic Acid
893	DHHS	(U.S.) Department of Health and Human Services
894	DHRA	(U.S.) DoD Human Resources Activity
895	DHS	U.S. Department of Homeland Security
896	DHSS	UK Department of Health and Social Security
897	DHTFYSS	U.S. Don't Have Time For You Silly S****
898	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
899	DIA	U.S. Defense Intelligence Agency
900	DIAC	Department of Immigration and Citizenship (Australia) [1]
901	DiC	Design Island Centre (computing usually used in a teaching situation)
902	DICASS	DIrectional Command Activated Sonobuoy System
903	DIFAR	DIrectional Frequency Analysis and Recording
904	DIME	Dense Inert Metal Explosive
905	DIP	Dual In-line Package (electronics)
906	DIPS	Defense independent pitching statistics
907	DIR	Defence Industrial Research
908	DISCOM	Division Support Command
909	DISE	Deployable Intelligence Support Element
910	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
911	DITY	Do-It-Yourself
912	DIVAD	Division Air Defence
913	DIY	Do It Yourself
914	DJI	Djibouti (ISO 3166 trigram)
915	DK	Denmark (ISO 3166 digram)
916	DL	Dexter's Laboratory
917	DLIC	Detachment Left-In-Contact
918	DLIR	Depot-Level Inspection and Repair
919	DLPMC	DorsoLateral PreMotor Cortex
920	DLRP	Data Link Reference Point
921	DLS	Deep Lens Survey
922	DLSA	(U.S.) Defense Legal Services Agency
923	DLSc	Diploma in Library Science
924	DLTBGYD	Don't let the bastards grind you down
925	DMC	(U.S.) Defense Management Council
926	DMCA	Digital Millennium Copyright Act
927	DMM	Digital Multimeter
928	DMOC	Distributed Mission Operations Centre
929	DMPA	(U.S.) Defense Medical Programs Activity
930	DMPFC	DorsoMedial PreFrontal Cortex
931	DMPK	Drug Metabolism and Pharmacokinetics
932	DMRB	Design Manual for Roads and Bridges
933	DMS	U.S. Defense Message System
934	DMSP	U.S. Defense Meteorological Satellite Program
935	DMT	Dimethyltryptamine
936	DMV	Department of Motor Vehicles
937	DMZ	DeMilitarized Zone
938	DN	Deacon
939	DNAW	Day Night All Weather
940	DNDi	Drugs for Neglected Diseases initiative
941	DNDO	U.S. Domestic Nuclear Detection Office
942	DNK	Denmark (ISO 3166 trigram)
943	DNM	Defence Nuclear Material
944	DNR	Do Not Resuscitate
945	DNS	Domain Name System
946	DOB	Date Of Birth
947	DOD	U.S. Department of Defense
948	DODAF	U.S. Department of Defense Architectural Framework
949	DoDD	U.S. Department of Defense Directive
950	DoDEA	(U.S.) Department of Defense Education Activity
951	DOE	U.S. Department of Energy
952	DOHC	Dual-OverHead-Cam engine
953	DOI	U.S. Department of the Interior
954	DORA	Defence of the Realm Act
955	DOS	Density of State
956	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
957	DotD	Deal of the Day (marketing gimmick)
958	DOW	Died of Wounds
959	DP	Division de production (Algerian petroleum company)
960	DPA	UK Defence Procurement Agency
961	DPCO	Double-Pole Change Over
962	DPDT	Double-Pole Double-Throw
963	DPI	Dots Per Inch
964	DPICM	Dual-Purpose Improved Conventional Munition
965	DPKO	UN Department for Peacekeeping Operations
966	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
967	DPPDB	Digital Point Positioning Database
968	DPRK	Democratic People's Republic of Korea
969	DPST	Double-Pole Single-Throw
970	DRC	Democratic Republic of the Congo
971	DRDC	Defence Research & Development Canada
972	DREA	Defence Research Establishment Atlantic (obsolete 2002)
973	DRES	Defence Research Establishment Suffield (obsolete 2002)
974	DRET	Defence Research Establishment Toronto (obsolete 2002)
975	DREV	Defence Research Establishment Valcartier (obsolete 2002)
976	DRIC	(U.S.) Defense Research Information Center
977	DRMS	(U.S.) Defense Revitalization and Marketing Service
978	DRPR	Drawing Practices
979	DRT	Document Related Technologies
980	Ds	Darmstadtium
981	DSAS	Disney Sing Along Songs
982	DSB	(U.S.) Defense Science Board
983	DSCS	U.S. Defense Satellite Communications System
984	DSCSOC	DSCS Operations Center
985	DSE	Dry Sheep Equivalent
986	DSG	Direct-Shift Gearbox
987	DSID	Dismounted Soldier Identification System
988	DSL	Digital Subscriber Line
989	DSLR	Digital single-lens reflex (camera)
990	DSM	Diagnostic and Statistical Manual of Mental Disorders
991	DSN	Deep Space Network
992	DSPL	Design Specialists and Plans Language
993	DSR	Deformed Special Relativity
994	DST	Daylight Saving Time
995	DSTL	British Defence Science and Technology Laboratory
996	DSWA	(U.S.) Defense Special Weapons Agency
997	DTA	Dental Technologists Association
998	DTD	Digital Terrain Data
999	DTG	Date-Time Group
1000	DTH	Direct To Home (television)
1001	DTI	UK Department of Trade and Industry
1002	DTIC	(U.S.) Defense Technical Information Center
1003	DTL	Diode-Transistor Logic (electronics)
1004	DTMF	Dual-tone multi-frequency signaling
1005	DTO	Disruptive Technology Office (was ARDA)
1006	DTR	Determine The Relationship
1007	DTSA	(U.S.) Defense Technology Security Administration
1008	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1009	DUSD	(U.S.) Deputy Under-Secretary of Defense
1010	DVLC	UK Driver and Vehicle Licencing Centre
1011	DVM	Doctor of Veterinary Medicine
1012	DVO	Direct View Optics
1013	DVOM	Digital Volt-Ohm Meter
1014	DVP	various meanings (disambiguation page)
1015	DW	Drum Workshop
1016	DWIM	Do What I Mean
1017	DWM	Doctor Who Magazine
1018	DWTS	Dancing with the Stars
1019	DWW	Down with Webster
1020	DXA	Dual-energy X-ray Absorptiometry
1021	DXM	DeXtroMethorphan
1022	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1023	Dy	Dysprosium
1024	DZA	Algeria (ISO 3166 trigram)
1025	E	East
1026	EABU	Explain Acronyms Before Use
1027	EAC	Echelons Above Corps
1028	EAPC	Euro-Atlantic Partnership Council
1029	EAST	Experimental Advanced Superconducting Tokamak
1030	EBD	Electronic Brake Distribution
1031	EBE	Extraterrestrial Biological Entity
1032	EBSA	Employee Benefits Security Administration
1033	EBW	Electron Beam Welding
1034	EBW	Exploding BridgeWire
1035	ECASS	European Centre for Analysis in the Social Sciences [1]
1036	ECBR	European Coalition for Biomedical Research
1037	ECCM	Electronic Counter-Counter-Measures
1038	ECFS	Electronic Case Filing System
1039	ECG	Electrocardiogram
1040	ECHR	European Convention on Human Rights
1041	ECJ	European Court of Justice
1042	ECL	Emitter Coupled Logic (electronics)
1043	ECommHR	European Commission on Human Rights
1044	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1045	ECT	ElectroConvulsive Therapy
1046	ECtHR	European Court of Human Rights
1047	EDA	European Defence Agency
1048	EDAC	Error Detection And Correction
1049	EDCS	Environmental Data Coding Specification
1050	EDH	Eastman Dental Hospital
1051	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1052	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1053	EEC	European Economic Community (predecessor of the EU)
1054	EEG	ElectroEncephaloGram
1055	EENT	End Evening Nautical Twilight
1056	EEO	Equal Employment Opportunity
1057	EEOC	(U.S.) Equal Employment Opportunity Commission
1058	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1059	EFF	Electronic Frontier Foundation
1060	EFL	English as a Foreign Language
1061	EFM	Enterprise Feedback Management
1062	EFOA	European Fuel Oxygenates Association
1063	EFSA	European Food Safety Authority
1064	EFT	Electronic Fund Transfer
1065	EFV	Expeditionary Fighting Vehicle
1066	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1067	EGCG	EpiGalloCatechin-3-Gallate
1068	EGIS	Erieye Ground Interface Segment
1069	EGRET	Energetic Gamma-Ray Experiment Telescope
1070	EGY	Egypt (ISO 3166 trigram)
1071	EHF	Extremely High Frequency
1072	EHR	Equipment History Record
1073	Ei	Exbi
1074	EI	Ireland (FIPS 10-4 country code; from Éire)
1075	EIA	Environmental Impact Assessment
1076	EIAH	Encyclopedia of Iranian Architectural History
1077	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1078	EIC	East India Company
1079	EICS	East India Company's Service
1080	eID	electronic ID
1081	EIRP	Effective Isotropic Radiated Power
1082	EIS	Environmental Impact Statement
1083	EJ	Exajoule
1084	EKG	Electrocardiogram (from German Elektrokardiogramm)
1085	EKMS	Electronic Key Management System
1086	EL	Exalitre
1087	ELINT	Electronic Intelligence
1088	ELL	English Language Learner
1089	ELM	Edge-Localised Mode (plasma physics)
1090	ELO	Electric Light Orchestra
1091	ELSS	Emergency Life Support Stores
1092	EM	ElectroMagnetism/ElectroMagnetic
1093	Em	Exametre
1094	EMA	European Medicines Agency
1095	EMCON	(Electromagnetic) Emissions Control
1096	EMDG	Euro-Missile Dynamics Group
1097	EMDR	Eye Movement Desensitisation and Reprocessing
1098	EMEA	Europe,Middle East and Africa
1099	EMG	ElectroMyoGraph
1100	EMP	ElectroMagnetic Pulse
1101	EMS	Emergency Medical Services
1102	EMT	Emergency Medical Technician
1103	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1104	ENE	East North-East
1105	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1106	ENTEC	Euro NATO Training Engineer Centre
1107	ENVL	Envelope
1108	ENY	Enemy
1109	EOD	Explosive Ordnance Disposal
1110	EOG	ElectroOculoGraphy
1111	EOM	End of Message
1112	EOSAT	Earth Observation Satellite
1113	EOSDIS	Earth Observation Satellite Data and Information System
1114	EP	European Parliament
1115	EP	Extended play
1116	EPCOT	Experimental Prototype Community Of Tomorrow
1117	EPGS	EOS Polar Ground Sites
1118	EPIRB	Emergency Position Indicating Radio Beacon
1119	EPL	English Premier League
1120	EPOS	Electronic Point Of Sale
1121	EPPA	Employee Polygraph Protection Act
1122	EPR	European Pressurised [Nuclear] Reactor
1123	EQ	Emotional Quotient
1124	Er	Erbium
1125	ERCIM	European Research Consortium for Informatics and Mathematics
1126	ERI	Eritrea (ISO 3166 trigram)
1127	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1128	EROS	Earth Resources Observation System
1129	ERP	Engineer Regulating Point
1130	ERR	Eesti Rahvusringhääling
1131	ERS	Earth Resources Survey
1132	ERTS	Earth Resources Technology Satellite (became Landsat)
1133	ERV	Endogenous RetroVirus
1134	ESD	ElectroStatic Discharge
1135	ESDP	European Security and Defence Policy
1136	ESE	East South-East
1137	ESH	Western Sahara (ISO 3166 trigram)
1138	ESL	English as a Second Language
1139	ESM	Electronic warfare Support Measures
1140	ESO	European Southern Observatory
1141	ESOL	English for Speakers of Other Languages
1142	ESPN	Entertainment and Sports Programming Network
1143	ESU	Emergency Services Unit
1144	ESV	Engineer Support Vehicle
1145	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1146	ETH	Ethiopia (ISO 3166 trigram)
1147	ETI	Extra-Terrestrial Intelligence
1148	ETLA	Extended TLA
1149	ETT	Embedded Training Team
1150	Eu	Europium
1151	EUCOM	(U.S.) European Command
1152	EUUSA	European Union and United States of America
1153	EV	Exavolt
1154	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1155	EWTN	Eternal Word Television Network
1156	Exatesla	Extra Terrestrial
1157	EXREP	Expeditious Repair (SM&R code)
1158	f	Femto
1159	fA	Femtoampere
1160	FA	Food Addicts in Recovery Anonymous
1161	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1162	FAAD	Forward Area Air Defence
1163	FAADEZ	Forward Area Air Defence Engagement Zone
1164	FAAFP	Fellow of the American Academy of Family Physicians
1165	FAAN	Fellow of the American Academy of Neurology
1166	FAAN	Fellow of the American Academy of Nursing
1167	FAAQ	Frequently Asked and Anticipated Questions
1168	FAASV	Field Artillery Ammunition Supply Vehicle
1169	FAB	Feline Advisory Bureau (UK feline charity)
1170	FACA	(US) Federal Advisory Committee Act
1171	FACH	Fuerza Aérea de Chile
1172	FACN	Fellow of the American College of Nutrition
1173	FACP	Fellow of the American College of Physicians
1174	FACTS	Flexible Alternating Current Transmission System
1175	FAM	Foreign Affairs Manual
1176	FAO	Food and Agriculture Organization
1177	FAPA	Fellow of the American Psychological Association
1178	FAPHA	Fellow of the American Public Health Association
1179	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1180	FASCAM	Family of Scatterable Mines[1]
1181	FASD	Fetal Alcohol Spectrum Disorder
1182	FASEB	Federation of American Societies for Experimental Biology
1183	FAT	Field Artillery Tractor
1184	FAVS	Future Armoured Vehicle System
1185	FAW	Football Association of Wales
1186	FBCS	Fellow of the British Computer Society
1187	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1188	FBIS	Foreign Broadcast Information Service
1189	FBM	Board foot
1190	fC	Femtocoulomb
1191	FCC	U.S. Federal Communications Commission
1192	FCE	First Certificate in English
1193	FCF	Financial Free Cash Flow
1194	FCLA	Fraud Claims Law Associate
1195	FCO	UK Foreign and Commonwealth Office
1196	FCW	Florida Championship Wrestling
1197	FD	Falun Dafa
1198	FDA	Food and Drug Administration (U.S.)
1199	FDBK	(I) Feedback
1200	Fe	Iron (Latin Ferrum)
1201	FEAST	Forum for European-Australian Science and Technology Cooperation
1202	FEATS	Festival of European Anglophone Theatrical Societies link title
1203	FEBA	Forward Edge of the Battle Area
1204	FED	Field Emission Display
1205	FEDEP	Federation Development Process (Simulation)
1206	FEF	Frontal Eye Field (neurophysiology)
1207	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1208	FENS	Federation of European Neuroscience Societies
1209	FES	Flywheel Energy Storage
1210	FEST	Frankfurt English Speaking Theatre link title
1211	FET	Field-effect transistor
1212	FEZ	Fighter Engagement Zone
1213	fF	Femtofarad
1214	FF	Final Fantasy
1215	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1216	FFC	Free For Chat
1217	FFE	Fukuoka Futures Exchange
1218	FFF	Fédération française de football (French for: French Football Federation)
1219	FFG	Guided Missile Frigate (hull classification symbol)
1220	FFOV	Forward Field Of View
1221	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1222	FFS	For Fuck's Sake
1223	FFT	Final Fantasy Tactics
1224	FG	Falun Gong
1225	fg	Femtogram
1226	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1227	FGOTUS	First Gentleman of the United States
1228	FGR	Flickr Group Roulette
1229	fH	Femtohenry
1230	FHFIF	Foster's Home for Imaginary Friends
1231	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1232	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1233	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1234	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1235	FIBUA	Fighting In Built-Up Areas
1236	FIC	Fellowship for Intentional Community
1237	FID	Foreign Internal Defence
1238	FIE	Fly-In Echelon
1239	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1240	FIFe	Fédération internationale féline (French for: International Feline Federation)
1241	FIFO	First In, First Out
1242	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1243	FIGJAM	Fuck I'm Good, Just Ask Me
1244	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1245	FIN	Finland (ISO 3166 trigram)
1246	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1247	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1248	FIS	Fédération internationale de ski (French for: International Ski Federation)
1249	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1250	FISH	Fluorescence In-Situ Hybridisation
1251	FiST	Fire Support Team
1252	FITS	Flexible Image Transport System
1253	FIU	Florida International University
1254	fJ	Femtojoule
1255	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1256	FJI	Fiji (ISO 3166 trigram)
1257	FJN	Financial Job Network
1258	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1259	fK	Femtokelvin
1260	FKSM	Fort Knox Supplemental Manual
1261	FKT	Fastest Known Time
1262	fL	Femtolitre
1263	FL	Florida (postal symbol)
1264	fl	floruit (Latin for: living) (genealogy)
1265	FLA	Florida,Front Line Assembly,Future Large Aircraft
1266	FLAB	Four-letter abbreviation
1267	FLAC	Free Legal Advice Centres
1268	FLAC	Free Lossless Audio Codec
1269	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1270	FLB	Forward Logistics Base
1271	FLET	Forward Line of Enemy Troops
1272	FLG	Falun Gong
1273	FLIP	Flight Information Publication
1274	FLIR	Forward Looking InfraRed (sensor)
1275	FLK	Falkland Islands (ISO 3166 trigram)
1276	FLOT	Forward Line of Own Troops
1277	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1278	FLQ	Free Legal Questions
1279	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1280	FLSA	Fair Labor Standards Act
1281	FLTSAT	Fleet Satellite
1282	FLTSATCOM	Fleet Satellite Communication System
1283	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1284	FM	Factory Mutual
1285	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)
1286	fm	Femtometre
1287	Fm	Fermium
1288	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1289	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1290	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1291	FMCG	Fast Moving Consumer Goods
1292	FME	Formal Methods Europe
1293	FMECA	Failure Modes and Effect Criticality Analysis
1294	FMJD	Fédération Mondiale du Jeu de Dames
1295	FMLA	Family Medical Leave Act
1296	FoE	Friends of the Earth
1297	FOGC	Federal Oil and Gas Council
1298	FOH	Front Of House
1299	FOIA	Freedom of Information Act
1300	FOM	Federation Object Model
1301	FONSI	Finding of No Significant Impact
1302	FOO	Forward Observation Officer
1303	FOOP	Friends Of Organ Pipes (Volunteer group)
1304	FoS	Family of Systems
1305	FOSE	Fallout 3 Script Extender
1306	FOSE	Federal Office Systems Expo
1307	FOT	Free on truck
1308	FOTA	Fellow of the Orthodontic Technicians Association
1309	FOTC	Flight of the Conchords
1310	FOUO	For Official Use Only
1311	FP	French Polynesia (FIPS 10-4 territory code)
1312	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1313	FPS	Fire Prevention System
1314	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1315	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1316	Fr	Francium
1317	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1318	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1319	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1320	FRICBM	Full Range ICBM
1321	FRO	Faroe Islands (ISO 3166 trigram)
1322	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1323	FRSA	Fellow of the Royal Society of Art
1324	FRY	Federal Republic of Yugoslavia
1325	fs	Femtosecond
1326	fS	Femtosiemens
1327	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1328	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1329	FSCL	Fire Support Co-ordination Line
1330	FSE	Fire Support Element
1331	FSF	Free Software Foundation
1332	FSH	Follicle Stimulating Hormone
1333	FSI	Fuel Stratified Injection
1334	FSS	Fire Support Station
1335	FSSP	Families of Structurally Similar Proteins
1336	FSTC	Foreign Science Technology Center (now NGIC)
1337	fT	Femtotesla
1338	FTC	Federal Trade Commission
1339	FTE	Full Time Equivalent
1340	FTL	Faster Than Light
1341	FTS	Flight Termination System used during some rocket launches
1342	FTS	Fuck That Shit
1343	FU	Smoke (METAR Code)
1344	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1345	fV	Femtovolt
1346	fW	Femtowatt
1347	FW	Forward
1348	FWC	Football World Cup
1349	FWF	Fixed Word Format
1350	FWI	French West Indies
1351	FWIW	For What It's Worth
1352	FWS	U.S. Fish and Wildlife Service
1353	FWT	Fresh Water Tank
1354	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1355	FYA	For Your Agenda
1356	FYDP	Five-Year Defense Plan (U.S.)
1357	FYI	For Your Information
1358	FYROM	Former Yugoslav Republic of Macedonia
1359	FZDZ	Freezing Drizzle (METAR Code)
1360	FZFG	Freezing Fog (METAR Code)
1361	FZRA	Freezing Rain (METAR Code)
1362	g	Gram
1363	G3	Heckler & Koch G3
1364	GAAR	General Anti-Avoidance Rule (tax evasion)
1365	GAB	Gabon (ISO 3166 trigram)
1366	GABA	Gamma-AminoButyric Acid
1367	GAD	Generalized Anxiety Disorder
1368	GAF	Garfield and Friends
1369	GAO	U.S. Government Accountability Office
1370	GAW	Global Atmospheric Watch
1371	GBBC	Great (Global) Backyard Bird Count
1372	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1373	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1374	GCA	Graduate in Claims Administration
1375	GCD	see entry
1376	GCF	Greatest Common Factor
1377	GCI	Ground-controlled interception
1378	GCN	Gamma-ray burst Coordination Network
1379	GCS	Global Coordinate System
1380	GCSE	General Certificate of Secondary Education (UK)
1381	Gd	Gadolinium
1382	GD	Grenada (ISO 3166 digram)
1383	GDL	Game Definition Language
1384	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1385	GDR	German Democratic Republic (cf. DDR)
1386	GDW	Game Designers Workshop
1387	Ge	Germanium
1388	GEBCO	General Bathymetric Chart of the Oceans
1389	GEC	Great Engineering Challenge
1390	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1391	GEEP	Geophysical Equipment Exploration Platform
1392	GEN	Full General (four stars) in the U.S. Army
1393	GeV	Gigaelectron-volt
1394	GEV	Ground Effect Vehicle
1395	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1396	GFI	Ground Fault Interruptor (aka GFCI)
1397	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1398	GFN	Global Footprint Network
1399	GG	Georgia (FIPS 10-4 country code)
1400	GGK	Good God Karma
1401	GHA	Ghana (ISO 3166 trigram)
1402	GHB	gamma-Hydroxybutyric acid
1403	Gi	Gibi
1404	GIB	Gibraltar (ISO 3166 trigram)
1405	GIG	Global Information Grid
1406	GINO	Godzilla In Name Only
1407	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1408	GJD	Geocentric Julian Day
1409	GLAAD	Gay and Lesbian Alliance Against Defamation
1410	GLAC	General Ledger Accounting Code
1411	GLAST	Gamma-ray Large Area Space Telescope
1412	GLBA	Gramm-Leach-Bliley Act
1413	GLC	Gas-liquid chromatography
1414	GLP	Guadeloupe (ISO 3166 trigram)
1415	GLV	Gained Life Value
1416	Gm	Gigametre
1417	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1418	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
1419	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1420	GMFSC	Ground Mobile Forces Satellite Communications
1421	GMO	Genetically Modified Organism
1422	GMPCS	Global Mobile Personal Communications by Satellite
1423	GNAS	Grand National Archery Society
1424	GNB	Guinea-Bissau (ISO 3166 trigram)
1425	GNP	Gross National Product
1426	GNQ	Equatorial Guinea (ISO 3166 trigram)
1427	GnRH	Gonadotropin-Releasing Hormone
1428	GO	Glorioso Islands (FIPS 10-4 territory code)
1429	GOA	General of the Army (United States only)
1430	GOAT	Greatest Of All Time
1431	GOC	General Officer Commanding
1432	GOES	Geostationary Operational Environmental Satellite
1433	GOP	Grand Old Party
1434	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1435	GOSC	General Officer Steering Committee
1436	GOSH	Great Ormond Street Hospital
1437	GOSP	Gas/Oil Separation Plant
1438	GOTS	Government off-the-shelf
1439	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1440	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1441	GPA	Grade Point Average
1442	GPC	Global Path Cache
1443	GPIB	General-Purpose Instrumentation/Interface Bus
1444	GPO	General Post Office
1445	GPPC	Genetics and Public Policy Center
1446	GPR	Ground-Penetrating Radar
1447	GPS	General Problem Solver,Global Positioning System
1448	GPT	General Purpose Technology, Get paid to surf (an online business model)
1449	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]
1450	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1451	GRAIL	Gravity Recovery and Interior Laboratory
1452	GRAS	Generally recognized as safe (FDA list)
1453	GRB	Gamma-Ray Burst
1454	GRC	Greece (ISO 3166 trigram)
1455	GRD	Grenada (ISO 3166 trigram)
1456	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1457	grep	[search] Globally for Regular Expression,Print [lines]
1458	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1459	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1460	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1461	GRL	Greenland (ISO 3166 trigram)
1462	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1463	Gs	Gigasecond
1464	GSA	U.S. General Services Administration
1465	GSD	Graphical Situation Display
1466	GSGB	(God send glamour boy 9-10/10)
1467	GSK	GlaxoSmithKline [good sexual karma]
1468	GSN	Game Show Network
1469	GSO	General Services Officer (U.S. Department of State)
1470	GSOH	Good Sense Of Humour
1471	GSP	Georges St-Pierre (Canadian MMA fighter)
1472	GSR	Gun Shot Residue
1473	GSS	Generic Security Services
1474	GSW	Gunshot wound
1475	GTD	Getting Things Done
1476	GTG	Got To Go (Internet chat)
1477	GTGN	Getty Thesaurus of Geographic Names
1478	GTK	Good To Know (Internet chat)
1479	GTM	Guatemala (ISO 3166 trigram)
1480	GU	Guam (postal symbol; ISO 3166 digram)
1481	GUF	French Guiana (ISO 3166 trigram)
1482	GUILT	Gangliated Utrophin Immuno Latency Toxin
1483	GULCR	Grupo de Usuarios de Linux de Costa Rica
1484	GUT	Grand Unification Theory
1485	GWARS	Ground Warfare System (simulation)
1486	GWAS	Grand Western Archery Society
1487	GWOT	Global War on Terrorism
1488	GXE	Gene-enivronment interaction
1489	GXM	Matrox Graphics eXpansion Module
1490	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1491	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1492	h	Hecto
1493	HAARP	High Frequency Active Auroral Research Program
1494	HAART	Highly Active Anti-Retroviral Therapy
1495	HAI	Human Awareness Institute
1496	HAL	Hardware Abstraction Layer
1497	HALO	High Altitude Low Opening (parachute jump)
1498	HAM	Amateur radio operator
1499	HANS	Head And Neck Support (device used in many race cars)
1500	HARM	High-speed Anti-Radiation Missile
1501	HAW	Heavy Antitank Weapon
1502	HAWK	Homing All the Way Killer (air defence system)
1503	HAZ	Heat-Affected Zone
1504	HAZMAT	Hazardous Materials
1505	HBCD	HexaBromoCycloDodecane
1506	HBO	Home Box Office
1507	HBR	Harvard Business Review
1508	HBT	Heterojunction Bipolar Transistor
1509	HBV	Hepatitis B Virus
1510	HCCI	Homogeneous Charge Compression Ignition
1511	HCF	Highest Common Factor
1512	HCSC	Higher Command and Staff Course
1513	HDL	High-Density Lipoprotein
1514	HDM	Human Decision-Making
1515	HDRA	Henry Doubleday Research Association
1516	He	Helium
1517	HE	High Explosive
1518	HEAT	High Explosive Anti-Tank (ammunition)
1519	HEBA	Hellenic Basketball Clubs Association
1520	HEER	High-Explosive Extended Range (ammunition)
1521	HEIC	Honourable East India Company
1522	HEMP	High-Altitude Electromagnetic Pulse
1523	HEOSS	High Earth Orbit Space Surveillance
1524	HEP	High-Explosive Plastic (ammunition)
1525	HEPA	High-Efficiency Particulate Air (filter)
1526	HESV	Heavy Engineering Support Vehicle
1527	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1528	HEU	Highly Enriched Uranium
1529	Hf	Hafnium
1530	HF	High Frequency
1531	HFE	Human Fertilisation and Embryology (UK Act)
1532	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1533	HFEA	Human Fertilisation and Embryology Authority (UK)
1534	Hg	Mercury (Latin Hydrargyrum)
1535	HGC	UK Human Genetics Commission
1536	HGF	Human Growth Factor
1537	HGTV	Home & Garden Television
1538	HI	Hawaii (postal symbol)
1539	HIH	His (or Her) Imperial Highness
1540	HIM	His (or Her) Imperial Majesty
1541	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1542	HIMEZ	High Altitude Missile Engagement Zone
1543	HIMYM	How I Met Your Mother
1544	HIPAA	U.S. Health Insurance Portability and Accountability Act
1545	Hipparcos	HIgh Precision Parallax COllecting Satellite
1546	Hird	Hurd of interfaces representing depth (cf. HURD)
1547	HiRISE	High Resolution Imaging Science Experiment
1548	HIT	Health Information Technology
1549	HIV	Human Immunodeficiency Virus
1550	HIWT	Hobart Institute of Welding Technology
1551	HJD	Heliocentric Julian Day
1552	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1553	HKG	Hong Kong (ISO 3166 trigram)
1554	HKS	HyperKinetic Syndrome
1555	hL	Hectolitre
1556	HL	Holding Line
1557	HLL	High-Level Language
1558	HLN	Headline News
1559	HLOS	High Level Output Specification
1560	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1561	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1562	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1563	HMF	HydroxyMethyl Furfural
1564	HMO	Health maintenance organization
1565	HMP	Her Majesty's Prison
1566	HMRC	Her/His Majesty's Revenue and Customs
1567	HMSO	Her Majesty's Stationery Office
1568	HMV	His Master's Voice
1569	HN	Honduras (ISO 3166 digram)
1570	HND	Honduras (ISO 3166 trigram)
1571	Ho	Holmium
1572	HO	Honduras (FIPS 10-4 country code)
1573	HOLLAND	Hope Our Love Lasts And Never Dies
1574	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1575	HOT	Highly Optimised Tolerance
1576	HOTAS	Hands on throttle-and-stick
1577	HOV	High Occupancy Vehicle
1578	hp	horse power
1579	HPA	UK Health Protection Agency
1580	HPCL	Hindustan Petroleum Corporation Limited
1581	HPLC	High Performance Liquid Chromatography
1582	HPT	High[er] Payoff Target
1583	HPV	Human Papilloma Virus
1584	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1585	HRD	Human Resource Development
1586	HRF	High iness Forces
1587	HRH	His (or Her) Royal Highness
1588	HRM	His (or Her) Royal Majesty
1589	HRM	Human Resource Management
1590	HRT	Hormone Replacement Therapy
1591	Hs	Hassium
1592	HSBC	The Hong Kong and Shanghai Banking Corporation
1593	HSC	Higher School Certificate
1594	HSM	High School Musical
1595	HSMAD	Human Science/Modeling and Analysis Data
1596	HSN	Home Shopping Network
1597	HSPH	Harvard School of Public Health
1598	HSSI	High-Speed Serial Interface
1599	HST	see entry
1600	HTA	HyperText Application
1601	HTFU	Harden The Fuck Up
1602	HTH	Hope That Helps
1603	HTI	Haiti (ISO 3166 trigram)
1604	HTML	HyperText Markup Language
1605	HTR	Heated Towel Rail
1606	HTS	High-Temperature Superconducting wire
1607	HTTP	HyperText Transfer Protocol
1608	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1609	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1610	HUN	Hungary (ISO 3166 trigram)
1611	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1612	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1613	HVAP	High Velocity Armour Piercing (ammunition)
1614	HVHF	High velocity human factors
1615	HVM	High Velocity Missile
1616	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1617	HWM	Hardware morphing (computer graphics rendering)
1618	HXB	The glycoprotein Tenascian C
1619	HZ	Haze (METAR Code)
1620	Hz	Hertz
1621	IA	Iowa (postal symbol)
1622	IAAL	I Am A Lawyer
1623	IAB	International Association for Biologicals
1624	IAD	Ion Assisted Deposition
1625	IADS	Integrated Air Defence System
1626	IAEA	International Atomic Energy Agency
1627	IAF	{i} Industrial Areas Foundation
1628	IAFG	Information Assurance Focus Group
1629	IANA	Internet Assigned Numbers Authority
1630	IANAL	I Am Not A Lawyer
1631	IAS	Image Assessment System
1632	IASIP	It's Always Sunny in Philadelphia
1633	IATA	International Air Transport Association
1634	IATF	International Automotive Task Force
1635	IATSE	International Alliance of Theatrical Stage Employees
1636	IAUC	International Astronomical Union Circular
1637	IAW	In Accordance With
1638	IB	International Baccalaureate
1639	IBA	Important Bird Area
1640	IBD	Inflammatory Bowel Disease
1641	IBDM	Information Based Decision Making
1642	IBM	International Business Machines
1643	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1644	IBS	Irritable Bowel Syndrome
1645	ICANN	Internet Corporation for Assigned Names and Numbers
1646	ICAO	International Civil Aviation Organization
1647	ICBM	Intercontinental Ballistic Missile
1648	ICBN	International Code of Botanical Nomenclature
1649	ICE	In case of emergency
1650	ICES	International Council for the Exploration of the Sea
1651	ICF	Intelligent Community Forum
1652	ICMP	Internet Control Message Protocol
1653	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1654	ICO	Intermediate Circular Orbit
1655	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1656	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1657	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1658	ICRL	Individual Component Repair List
1659	ICRS	International Celestial Reference System
1660	ICSI	Intracytoplasmic Sperm Injection
1661	ICT	Information and communication technologies
1662	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1663	ICV	Infantry Carrier Vehicle
1664	ICYMI	In Case You Missed It
1665	IDC	International Data Corporation
1666	IDDI	I don't do initialisms (see irony)
1667	IDGAF	I don't give a fuck
1668	IDK	I don't know
1669	IDL	Interface Definition Language
1670	IDN	Indonesia (ISO 3166 trigram)
1671	IEA	International Energy Agency
1672	IEC	International Electrotechnical Commission
1673	IED	Improvised Explosive Device
1674	IELTS	International English Language Testing System
1675	IER	Information Exchange Requirement
1676	IET	Initial Entry Training
1677	IET	Institution of Engineering and Technology
1678	IETF	Internet Engineering Task Force
1679	IEW	Intelligence and Electronic Warfare
1680	IFAB	International Football Association Board
1681	IFAH	International Federation for Animal Health
1682	IFAP	International Federation of Agricultural Producers
1683	IFO	Identified Flying Object (see also UFO)
1684	IFOV	Instantaneous Field of View
1685	IFPI	International Federation of Phonographic Industries
1686	IFRB	International Frequency Registration Board
1687	IFV	Infantry Fighting Vehicle
1688	IG	Inspector General
1689	IGNOU	Indira Gandhi National Open University
1690	IGS	International Ground Station
1691	IHH	Idiopathic Hypogonadotropic Hypogonadism
1692	IHO	International Hydrographic Organization
1693	IHR	Institute for Historical Review
1694	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1695	II	Two (in Roman numerals)
1696	IICA	Inter-American Institute for Cooperation on Agriculture
1697	IIE	Innovative Interstellar Explorer
1698	III	Three (in Roman numerals)
1699	IIRC	If I Recall/Remember Correctly
1700	IISS	International Institute for Strategic Studies
1701	IJN	Imperial Japanese Navy (World War II)
1702	IJWP	Interim Joint Warfare Publication
1703	ILDS	Improved Landmine Detection System
1704	ILO	International Labour Organization
1705	ILRI	International Livestock Research Institute
1706	ILY	I Love You [pronounced ILL-LEE]
1707	IMBD	International Migratory Bird Day
1708	IMDb	Internet Movie Database
1709	IME	In My Experience
1710	IMHO	In My Humble/Honest Opinion
1711	IML	International Mister Leather
1712	IMNSHO	In My Not So Humble Opinion
1713	IMPAC	International Merchant Purchase Authorization Card
1714	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1715	IMPATT	IMPact Avalanche Transit Time diode
1716	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1717	IMRL	Individual Material iness List
1718	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1719	IMsL	International Ms. Leather
1720	IMT	Integrated Management Tool
1721	IMU	International Mathematical Union
1722	In	Indium
1723	INA	Immigration and Nationality Act
1724	INAS	International Near-Earth Asteroid Survey
1725	INCITS	InterNational Committee for Information Technology Standards
1726	IND	India (ISO 3166 trigram)
1727	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1728	inet	the Internet
1729	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1730	INFOSEC	Information Security
1731	INLA	Irish National Liberation Army
1732	INMARSAT	International Maritime Satellite organization
1733	INRIA	Institut national de recherche en informatique et en automatique
1734	INS	Immigration and Naturalization Service
1735	InSAR	Interferometric synthetic aperture radar
1736	INST	Information Standards and Technology
1737	INTERFET	International Force for East Timor
1738	INTSUM	Intelligence Summary
1739	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1740	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1741	IPB	Intelligence Preparation of the Battlefield
1742	IPL	Inferior Parietal Lobule
1743	IPO	Initial Public Offering
1744	IPT	Integrated Product/Project Team
1745	IPTS	Institute for Prospective Technological Studies
1746	IPTV	Internet Protocol TeleVision
1747	IPW	Interrogation of Prisoners of War
1748	Ir	Iridium
1749	IRAD	Internal Research and Development
1750	IRAN	(I) Inspect and Repair As Necessary
1751	IRAS	Infrared Astronomical Satellite
1752	IRB	International Rugby Board
1753	IRBM	Intermediate Range Ballistic Missile
1754	IREA	Intermountain Rural Electric Association
1755	IRINN	Islamic Republic of Iran News Network
1756	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1757	IRN	Iran (ISO 3166 trigram)
1758	IRO	International Refugee Organisation
1759	IRQ	Iraq (ISO 3166 trigram)
1760	IRS	U.S. Internal Revenue Service
1761	IRST	Infra-red Search and Track
1762	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1763	ISAR	Inverse SAR (Synthetic Aperture Radar)
1764	ISB	Intermediate Staging Base
1765	ISBN	International Standard Book Number (ISO 2108)
1766	ISCCP	International Satellite Cloud Climatology Project
1767	ISCII	Indian Standard Code for Information Interchange
1768	ISDN	Integrated Services Digital Network
1769	ISEF	Intel International Science and Engineering Fair
1770	ISEN	Internet Search Environment Number
1771	ISF	Internal Security Force
1772	ISIL	Islamic State of Iraq and the Levant
1773	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1774	ISL	Iceland (ISO 3166 trigram)
1775	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1776	ISMB	International Society of Matrix Biologists
1777	ISMC	Intelligent Sounding Meaningless Conversation
1778	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1779	ISPE	International Society for Pharmacoepidemiology
1780	ISRO	Indian Space Research Organisation
1781	ISSCR	International Society for Stem Cell Research
1782	ISSN	International standard serial number (ISO 3297)
1783	ISTC	Institute of Scientific and Technical Communications (UK)
1784	ISTS	Intel Science Talent Search
1785	ITA	Italy (ISO 3166 trigram)
1786	ITAG	Inertial Terrain-Aided Guidance
1787	ITALY	I'll Truly Always Love You
1788	ITAS	Improved Target Acquisition Sight
1789	ITC	InferoTemporal Cortex (neurophysiology)
1790	ITCZ	Intertropical Convergence Zone
1791	ITEC	Information Technology Exposition & Conference
1792	ITEMS	Interactive Tactical Environment Management System
1793	ITER	International Thermonuclear Experimental Reactor
1794	ITF	International Tennis Federation
1795	ITK	In The Know
1796	ITN	Independent Television News (British)
1797	ITT	International Telephone and Telegraph (U.S.)
1798	ITTO	International Tropical Timber Organization
1799	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1800	Iveco	Industrial Vehicles Corporation
1801	IVF	In Vitro Fertilisation
1802	IVI	Interchangeable Virtual Instrument
1803	IVIS	Inter-Vehicle Information System
1804	IVL	Inter-Visibility Line
1805	IVM	In Vitro [Oocyte] Maturation
1806	IVO	In Vicinity Of
1807	IW	Information Warfare
1808	IWARS	Infantry Warrior Simulation
1809	IWC	International Whaling Commission
1810	IWW	Industrial Workers of the World
1811	IX	Nine (in Roman numerals)
1812	IXT	IntraText digital library; IntraText lexical hypertext
1813	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1814	IZ	Iraq (FIPS 10-4 country code)
1815	J	Joule
1816	J1	Joint [Manpower &] Personnel Directorate
1817	J2	Joint Intelligence Directorate
1818	J3	Joint Operations Directorate
1819	J4	Joint Logistics Directorate
1820	J5	Joint Strategic Plans & Policy Directorate
1821	J7	Joint Operational Plans & Interoperability Directorate
1822	JA	Japan (FIPS 10-4 country code)
1823	JAFT	Just A Field Test
1824	JAL	Japan Airlines
1825	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1826	JAM	Jamaica (ISO 3166 trigram)
1827	JAMA	Journal of the American Medical Association
1828	JANET	Joint Academic Network
1829	JATO	Jet-Assisted Take-Off
1830	JB	Jail Bait
1831	JB	Junior Branch
1832	JBFSA	Joint Blue Force Situational Awareness
1833	JCDB	Joint Common Data Base
1834	JCDS	Joint Chiefs of the Defence Staff
1835	JCIDS	Joint Capabilities Integration and Development System
1836	JCL	Job Control Language
1837	JCP	Java Community Process
1838	JCS	Joint Chiefs of Staff
1839	JCW	Juggalo Championship Wrestling
1840	JDBC	Java Data Base Connectivity
1841	JDEM	Joint Dark Energy Mission
1842	JDL	Jewish Defense League
1843	JE	Jersey (FIPS 10-4 territory code)
1844	JEFX	Joint Expeditionary Force eXperiment
1845	JET	Joint European Torus
1846	JEZ	Joint Engagement Zone
1847	JFACC	Joint Force Air Component Commander
1848	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1849	JFC	Joint Force Commander
1850	JFK	John Fitzgerald Kennedy or the airport named after him.
1851	JFLCC	Joint Force Land Component Commander
1852	JFMCC	Joint Force Maritime Component Commander
1853	JFO	Journal of Field Ornithology
1854	JFSOCC	Joint Force Special Operations Component Commander
1855	JFTX	Joint Field Training Exercise
1856	JH	Japan Highway Public Corporation
1857	JH	Jharkhand (Indian state code)
1858	JI	Joint Implementation
1859	JIB	Joint Information Bureau
1860	JIC	Joint Intelligence Centre
1861	JINI	Java Intelligent Network Infrastructure
1862	JITC	Joint Interoperability Test Command
1863	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1864	JJAP	Japanese Journal of Applied Physics
1865	JL	Japan Airlines (IATA airline designator)
1866	JLA	Justice League of America
1867	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1868	JMS	Java Message Service
1869	JN	Jan Mayen Island (FIPS 10-4 territory code)
1870	JNI	Java Native Interface
1871	JNLP	Java Network Launch Protocol
1872	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1873	JOA	Joint Operations Area
1874	JOPES	Joint Operations Planning and Execution System
1875	JOR	Jordan (ISO 3166 trigram)
1876	JOTS	Joint Operations Tactical System
1877	JPL	Jet Propulsion Laboratory
1878	JPN	Japan (ISO 3166 trigram)
1879	JPOW	Joint Project Optic Windmill
1880	JRDF	Joint Rapid Deployment Forces
1881	JRE	Java Runtime Environment
1882	JREF	James Randi Educational Foundation
1883	JROC	Joint Requirements Oversight Council
1884	JROCM	JROC Memorandum
1885	JRRF	Joint Rapid Reaction Force
1886	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1887	JSAP	Japan Society of Applied Physics
1888	JSCSC	Joint Services Command and Staff College
1889	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
1890	JSF	Joint Strike Fighter
1891	JSIMS	Joint Simulation System
1892	JSOA	Joint Special Operations Area
1893	JSOTF	Joint Special Operations Task Force
1894	JSP	JavaServer Page
1895	JSP	Joint Services Publication
1896	JSR	Java Specification Request
1897	JSS	Joint Support Ship Project
1898	JTC	Joint Training Confederation
1899	JTF	Joint Task Force
1900	JTFEX	Joint Task Force Exercise
1901	JTLS	Joint Theater Level Simulation
1902	JTMD	Joint Theatre Missile Defence
1903	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
1904	JU	Juan de Nova Island (FIPS 10-4 territory code)
1905	JUGFET	JUnction Gate Field-Effect Transistor
1906	JUICE	JUpiter ICy Moon Explorer
1907	JUO	Joint Urban Operations
1908	JV	Joint Venture,Junior Varsity
1909	JW	Jehovah's Witnesses
1910	JWARS	Joint Warfare System (simulation)
1911	JWP	Joint Warfare Publication
1912	JY	Japanese Yen
1913	JZ	Joint Zone
1914	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
1915	k	Kilo-
1916	K	picokelvin
1917	K9	Canine Police Unit
1918	Ka	Kamov Design Bureau
1919	kA	Kiloampere
1920	KA	Knowledge Acquisition,Karnataka (Indian state code)
1921	KAF	Kandahar Air Field
1922	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
1923	KARNAC	Knowledge Aided Retrieval in Activity Context
1924	KARR	Knight Automated Roving Robot (Knight Rider character)
1925	KATUSA	Korean Augmentation To United States Army
1926	KAZ	Kazakhstan (ISO 3166 trigram)
1927	KBE	Knight Commander of the Order of the British Empire
1928	KBO	Kuiper Belt Object
1929	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
1930	kC	Kilocoulomb
1931	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
1932	KCL	King's College London
1933	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
1934	KCS	Kansas City Southern Railway (AAR reporting mark)
1935	KD	Kawasaki Disease,Kraft Dinner
1936	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
1937	KEDO	Korean Peninsula Energy Development Organization
1938	KEN	Kenya (ISO 3166 trigram)
1939	KERA	Kentucky Education Reform Act (of 1990)
1940	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
1941	KESR	Kent and East Sussex Railway.
1942	KET	Kentucky Educational Television,Key English Test
1943	kF	Kilofarad
1944	KFC	Kentucky Fried Chicken
1945	KFOR	UN Kosovo Force
1946	KFUPM	King Fahd University of Petroleum & Minerals
1947	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
1948	KGO	Knight of the Guelphic Order of Hanover
1949	KGZ	Kyrgyzstan (ISO 3166 trigram)
1950	KH	Cambodia (ISO 3166 digram)
1951	kH	Kilohenry
1952	KHL	Kontinental Hockey League
1953	KHM	Cambodia (ISO 3166 trigram)
1954	KHz	Kilohertz
1955	Ki	Kibi
1956	KI	Kiribati (ISO 3166 digram)
1957	KIA	Killed In Action
1958	KIDS	Knowledge-based Integrated Design System
1959	KIR	Kiribati (ISO 3166 trigram)
1960	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
1961	KIT	Keep In Touch
1962	KITECH	Korean Institute of Industrial Technology
1963	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
1964	kJ	Kilojoule
1965	kK	Kilokelvin
1966	KKK	Ku Klux Klan
1967	kL	Kilolitre
1968	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
1969	KLOC	Kilo Lines Of Code
1970	KM	Comoros,Knowledge Management
1971	kN	Kilonewton
1972	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
1973	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
1974	KO	Knocked Out
1975	KOR	Republic of Korea (ISO 3166 trigram)
1976	KP	Kim Possible
1977	KPMG	Klynveld,Peat,Marwick,Goerdeler
1978	KPNO	Kitt Peak National Observatory
1979	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
1980	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
1981	Kr	Krypton
1982	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
1983	kS	Kilosiemens
1984	KSC	Kennedy Space Center
1985	KSI	Killed or Seriously Injured
1986	KSU	Kansas State University
1987	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
1988	kT	Kilotesla
1989	KTS	Knight of the Tower and Sword (of Portugal)
1990	KU	Kuwait (FIPS 10-4 country code)
1991	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
1992	kV	Kilovolt
1993	KV	Kosovo
1994	kW	Kilowatt
1995	KW	Kuwait (ISO 3166 digram)
1996	KWB	Kids' WB!
1997	KWT	Kuwait (ISO 3166 trigram)
1998	KX	Cayman Airways (IATA airline designator)
1999	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2000	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2001	KZN	KwaZulu-Natal
2002	La	Lanthanum
2003	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2004	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2005	LAB	Logistics Assault Base
2006	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2007	LACMA	Los Angeles County Museum of Art
2008	LAD	Laser Aiming Device
2009	LADW	Local Air Defence Warning
2010	LAESI	Local Authority & Emergency Service Information
2011	LAN	Local Area Network
2012	LANL	Los Alamos National Laboratory
2013	LAO	Laos (ISO 3166 trigram)
2014	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2015	LARC	Livermore Advanced Research Computer (cf. LLNL)
2016	LARP	Live-Action Role-Playing
2017	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2018	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2019	LATA	Local Access Transport Area
2020	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2021	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2022	LAW	Light Antitank Weapon
2023	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2024	LB	Lebanon (ISO 3166 digram)
2025	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2026	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2027	LBN	Lebanon (ISO 3166 trigram)
2028	LBNL	Lawrence Berkeley National Laboratory
2029	LBR	Liberia (ISO 3166 trigram)
2030	LBS	Location-Based Services
2031	LBT	Large Binocular Telescope
2032	LBW	Leg Before Wicket
2033	LBY	Libya (ISO 3166 trigram)
2034	LCA	Saint Lucia (ISO 3166 trigram)
2035	LCC	Land Component Commander
2036	LCCP	Light Contingency Communications Package
2037	LCD	Liquid Crystal Display
2038	LCM	Least/Lowest Common Multiple
2039	LCS	League of Legends Championship Series
2040	LDA	Lateral Drift Apparatus (paratroops)
2041	LDC	Lesser Developing/Developed Country
2042	LDL	Low-Density Lipoprotein
2043	LDV	Local Defence Volunteers (British Home Guard)
2044	LDW	Lane Departure Warning (ADAS)
2045	LE	Lebanon (FIPS 10-4 country code)
2046	LEC	Local Exchange Carrier
2047	LED	Light-Emitting Diode
2048	LEGAD	Legal Advice
2049	Legs	level emotion gad speed
2050	LEMOSS	Long-Endurance MObile Submarine Simulator
2051	LEN	Large Extension Node
2052	LEP	Large Electron-Positron collider
2053	LER	Loss-Exchange Ratio
2054	LEU	Low-Enriched Uranium
2055	LF	Low Frequency
2056	LFO	Low Frequency Oscillation / Oscillator
2057	LFTR	Liquid fluoride thorium reactor
2058	LG	Latvia (FIPS 10-4 country code)
2059	LGM	Little Green Men
2060	LGS	Landsat Ground Station
2061	LHC	Large Hadron Collider
2062	LHS	Left Hand Side
2063	Li	Lithium
2064	LIBOR	London Interbank Offered Rate
2065	LIBS	Laser Induced Breakdown Spectroscopy
2066	LIE	Liechtenstein (ISO 3166 trigram)
2067	LIGO	Laser Interferometer Gravitational-Wave Observatory
2068	LINEAR	Lincoln Near-Earth Asteroid Research
2069	LISA	Laser Interferometer Space Antenna
2070	LIVE	Liquid Inertial Vibration Eliminator
2071	LJJ	Lord Justices of Appeal
2072	LK	Sri Lanka (ISO 3166 digram)
2073	LKA	Sri Lanka (ISO 3166 trigram)
2074	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2075	LLAD	Low Level Air Defence
2076	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2077	LLC	Limited Liability Company
2078	LLLTV	Low-Light Level Television
2079	LLNL	Lawrence Livermore National Laboratory
2080	LLP	Limited Liability Partnership
2081	LLTR	Low-Level Transit Route
2082	LMAO	Laughing My Ass Off (Internet shorthand)
2083	LMB	Lick My Balls
2084	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2085	LMN	Lifetime Movie Network
2086	LMS	Like My Status (Internet shorthand)
2087	LMV	() Light Motor Vehicle
2088	LNER	London and North Eastern Railway
2089	LNG	Liquefied Natural Gas
2090	LNO	Liaison Officer
2091	LO	Slovakia (FIPS 10-4 country code)
2092	LOA	Limit Of Advance
2093	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2094	LoD	Lines of Development (UK)
2095	LOFAR	Low Frequency Analysis and Recording
2096	LOGPAC	Logistics Package
2097	LOL	Laughing Out Loud (Internet shorthand)
2098	LOMEZ	Low Altitude Missile Engagement Zone
2099	LONEOS	Lowell Observatory Near-Earth-Object Search
2100	LORTID	LOng Range Target IDentification
2101	LOS	Line Of Sight
2102	LOSAT	Line-Of-Sight Anti-Tank (missile)
2103	LOTA	Licentiate of the Orthodontic Technicians Association
2104	LOTIS	Livermore Optical Transient Imaging System
2105	LOTS	Logistics Over-The-Shore
2106	LPC	Linear Predictive Coding
2107	LPG	Liquefied Petroleum Gas (cf. LNG)
2108	LPI	Low Probability of Intercept
2109	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2110	Lr	Lawrencium
2111	LR	Liberia (ISO 3166 digram)
2112	LRC	Logistics iness Center
2113	LRGW	Long-Range Guided Weapon
2114	LRICBM	Limited Range ICBM
2115	LRIP	Low Rate Initial Production
2116	LRP	Logistics Release Point
2117	LRPE	Long-Range Planning Element
2118	LRS	Long Range Surveillance
2119	LRU	Line-Replaceable Unit
2120	LSI	Large-Scale Integration
2121	LSIF	Labour Sponsored Investment Fund
2122	LSND	Liquid Scintillator Neutrino Detector
2123	LSO	Lesotho (ISO 3166 trigram)
2124	LSST	Large Synoptic Survey Telescope
2125	Lt	Lieutenant
2126	LtC	Lieutenant-Colonel (U.S.)
2127	LTC	Long-Term Costing
2128	Ltd	Limited
2129	LTDP	Long-Term Defence Plan
2130	LTI	Linear Time-Invariant
2131	LTM	Acronym for Laughing To Myself
2132	LTP	Long-Term Potentiation
2133	LTU	Lithuania (ISO 3166 trigram)
2134	LU	Acronym Love You
2135	LU	Loonatics Unleashed
2136	Lu	Lutetium
2137	LUCA	Last Universal Common Ancestor
2138	LUG	Linux User Group
2139	LULU	Locally Unwanted Land Use (urbanism)
2140	LUX	Luxembourg (ISO 3166 trigram)
2141	LVA	Latvia (ISO 3166 trigram)
2142	LVEF	Left Ventricular Ejection Fraction
2143	Lw	Lawrencium (obsolete 1963)
2144	LWR	Laser warning receiver
2145	LWRC	Land Warfare Resources Corporation
2146	LWS	Land Warrior System
2147	LX	Electrics (theatrical term)
2148	LYAO	Laugh Your Ass Off
2149	LYLAS	Love You Like A Sister
2150	Ma	Megaannum
2151	mA	Milliampere
2152	MAA	Mathematical Association of America
2153	MAAC	Metro Atlantic Athletic Conference
2154	MACE	Multi-Agent Computing Environment
2155	MACHO	MAssive Compact Halo Object
2156	MAF	Maintenance Action Form
2157	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2158	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2159	MAGTF	Marine Air-Ground Task Force
2160	MALD	Miniature Air-Launched Decoy
2161	MANPADS	MAN-Portable Air Defence System
2162	MANPRINT	MANpower and PeRsonnel INTegration
2163	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2164	MAOI	Monoamine oxidase inhibitor
2165	MAPS	Monitoring Avian Productivity and Survivorship
2166	MAR	Morocco (ISO 3166 trigram)
2167	MarBEF	Marine Biodiversity and Ecosystem Functioning
2168	MARCENT	United States Marine Forces Central Command
2169	MARFORCC	Marine Force Component Commander
2170	MASAS	Monte Agliale Supernovae and Asteroid Survey
2171	Maser	Microwave Amplification by Stimulated Emission of Radiation
2172	MASH	Mobile Army Surgical Hospital
2173	MASINT	Measurement And Signature Intelligence
2174	MAVS	Mobile Artillery Vehicle System
2175	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2176	MBCC	Migratory Bird Conservation Commission (U.S.)
2177	MBCS	Multi-Byte Character Set
2178	MBI	Moody Bible Institute
2179	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2180	MBM	Meat and Bone Meal
2181	MBT	Main Battle Tank
2182	MBTI	Myers-Briggs Type Indicator
2183	mC	Millicoulomb
2184	MCDL	Model Composition Definition Language
2185	MCFT	Modified Compression Field Theory
2186	MCG	Melbourne Cricket Ground
2187	MCIS	Mellon Collie and the Infinite Sadness
2188	MCM	Mine Counter-Measures
2189	MCMV	Mine Counter-Measure Vessel
2190	MCR	My Chemical Romance
2191	MCSF	Marine Corps Security Forces
2192	MCT	Movement Control Team
2193	MCTIS	Mounted Co-operative Target Identification System
2194	Md	Mendelevium
2195	MDNA	Madonna's 12th studio album title (2012)
2196	MDO	Membership Driven Organisation
2197	MDP	Markov Decision Process
2198	MDT	Mountain Daylight Time (UTC-6 hours)
2199	MDV	Maldives (ISO 3166 trigram)
2200	Me	Messerschmitt
2201	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2202	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)
2203	MEDEVAC	Medical evacuation
2204	MEDS	Mission Essential Data Set
2205	MEG	MagnetoEncephaloGraphy
2206	MELT	Metallic Line/Loop Test (ing)
2207	MEMS	Microelectromechanical System
2208	MER	Mars Exploration Rover
2209	MERL	Mitsubishi Electric Research Laboratories
2210	MES	Manufacturing Execution Systems
2211	METAR	[Meteorological] Aviation Routine weather report
2212	METOC	Meteorological and Oceanographic
2213	MeV	Megaelectronvolt
2214	MEX	Mexico (ISO 3166 trigram)
2215	MEZ	Missile Engagement Zone
2216	mF	Millifarad
2217	MGPAM	My Gym Partner's a Monkey
2218	MGS	Mobile Gun System
2219	mH	Millihenry
2220	MHC	Major Histocompatibility Complex
2221	MHHW	Mean Higher High Water (nautical charts)
2222	MHL	Marshall Islands (ISO 3166 trigram)
2223	MHLW	Mean Higher Low Water (nautical charts)
2224	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2225	MHW	Mean High Water (nautical charts)
2226	MHWN	Mean High Water Neaps (nautical charts)
2227	MHWS	Mean High Water Springs (nautical charts)
2228	MHz	Megahertz
2229	Mi	Mebi
2230	MIA	Missing In Action
2231	MICLIC	Mine Clearing Line Charge
2232	MICOM	Missile Command
2233	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2234	MIDAS	Man-machine Integration Design and Analysis System
2235	MIDI	Musical Instrument Digital Interface
2236	MIDS	Multi-Function Information Distribution System
2237	MIFG	Shallow Fog (METAR Code)
2238	MIKE	Monitoring of Illegal Killing of Elephants
2239	MIL	Man-In-the-Loop
2240	MILC	Mirrorless interchangeable-lens camera
2241	MILF	Mother I'd Like to Fuck
2242	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2243	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2244	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2245	MIRV	Multiple Independent Reentry Vehicle
2246	MISREP	Mission Report
2247	MISSI	Multilevel Information System Security Initiative
2248	MITL	Man-In-The-Loop
2249	MITS	see entry
2250	mJ	Millijoule
2251	MJD	Modified Julian Day
2252	mK	Millikelvin
2253	MKG	Michael Kidd-Gilchrist (American basketball player)
2254	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2255	mL	Millilitre
2256	MLB	Major League Baseball
2257	MLC	Member of the Legislative Council (in India)
2258	MLE	Maximum likelihood estimation
2259	MLHW	Mean Lower High Water (nautical charts)
2260	MLI	Mali (ISO 3166 trigram)
2261	MLL	Major League Lacrosse
2262	MLLW	Mean Lower Low Water (nautical charts)
2263	MLP	My Little Pony
2264	MLRS	Multiple-Launch Rocket System
2265	MLT	Malta (ISO 3166 trigram)
2266	MLW	Mean Low Water (nautical charts)
2267	MLWN	Mean Low Water Neaps (nautical charts)
2268	MLWS	Mean Low Water Springs (nautical charts)
2269	Mm	Megametre
2270	mm	Millimetre
2271	MMEV	Multi-Mission Effects Vehicle
2272	MMI	Magical MonkeyZ Inc.
2273	MMI	Man-Machine Interface
2274	MMI	McLean Meditation Institute
2275	MMIC	McLean Meditation Institute Certified
2276	MMO	Massively Multiplayer Online (computer game)
2277	MMOR	Master of Management in Operations Research
2278	MMORPG	Massively multiplayer online role-playing game
2279	MMPR	Mighty Morphin Power Rangers
2280	MMS	Multimission Modular Spacecraft
2281	Mn	Manganese
2282	mN	Millinewton
2283	MNB	Multinational Brigade
2284	MNE	Montenegro (ISO 3166 trigram)
2285	MNMF	Multi-National Maritime Force
2286	MNP	Northern Mariana Islands (ISO 3166 trigram)
2287	MNS	Mission Needs Statement
2288	Mo	Molybdenum
2289	MOA	Museum of Art (Brigham Young University)
2290	MOCAS	Mechanization Of Contract Administration Services
2291	MoD	Ministry of Defence (United Kingdom) and various other countries
2292	modem	Modulator-Demodulator
2293	Moe	Marvel of entertainment
2294	MOE	Measure Of Effectiveness
2295	MOF	Ministry of Finance (Japan)
2296	MOFA	Ministry of Foreign Affairs (Japan)
2297	MOID	Minimum Orbital Intersection Distance
2298	MOJWA	Movement for Oneness and Jihad in West Africa
2299	MOLO	Mobile Other Licensed Operator (UK)
2300	MOM	Master's Degree in Oriental medicine
2301	MOM	Message Oriented Middleware
2302	MoM	Multiple of the median
2303	MoMA	Museum of Modern Art (NYC)
2304	MOND	Modified Newtonian Dynamics
2305	MOO	Measure Of Outcome
2306	MOPP	Mission-Oriented Protective Posture
2307	MORP	Meteorite Observation and Recovery Project
2308	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2309	MOT	Ministry of Transport (UK)
2310	MOTA	Member of the Orthodontic Technicians Association
2311	MOTESS	Moving Object and Transient Event Search System
2312	MOU	Memorandum Of Understanding
2313	MOW	Maintenance of way (also MW)
2314	MOZ	Mozambique (ISO 3166 trigram)
2315	MPa	Megapascal
2316	mPa	Millipascal
2317	MPAA	Motion Picture Association of America
2318	MPEC	Minor Planet Electronic Circular
2319	MPEG	Motion Pictures (Coding) Experts Group
2320	MPEV	Multi-Purpose Engineering Vehicle
2321	MPF	Maritime Prepositioning Force
2322	MPFC	Medial PreFrontal Cortex
2323	MPG	Miles Per Gallon
2324	MPMC	Medial PreMotor Cortex
2325	MPSI	Member of the Pharmaceutical Society of Ireland
2326	MPSoC	MultiProcessor System-on-Chip
2327	MPSRON	Maritime Propositioning Ship Squadron
2328	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2329	MRAV	Multi-Role Armoured Vehicle
2330	MRBM	Medium Range Ballistic Missile
2331	MRC	Maintenance Requirements Card
2332	MRD	Motorized Rifle Division
2333	MRGW	Medium-Range Guided Weapon
2334	MRI	Magnetic Resonance Imaging
2335	MRL	Multiple Rocket Launcher
2336	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2337	MRS	Magnetic Resonance Spectroscopy
2338	MRSA	Methicillin-resistant Staphylococcus aureus
2339	MRTFB	U.S. Major Range and Test Facility Base
2340	Ms	Megasecond
2341	mS	Millisiemens
2342	MSD	Minimum Safe Distance
2343	MSDB	Multi Source Data Base
2344	MSE	Multiple Subscriber Element
2345	MSG	Message
2346	MSLP	Mean Sea Level Pressure
2347	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2348	MSO	Multiple System Operator
2349	MSPB	Merit Systems Protection Board
2350	MSSA	Methicillin-susceptible Staphylococcus aureus
2351	Mt	Meitnerium
2352	mT	Millitesla
2353	MTBF	Mean time between failures
2354	MtF	Male-to-female transsexual
2355	MTG	Magic: The Gathering
2356	MTQ	Martinique (ISO 3166 trigram)
2357	MTT	Methylthiazol tetrazolium (assay)
2358	MTWS	MAGTF Tactical Warfare System
2359	MUS	Mauritius (ISO 3166 trigram)
2360	mV	Millivolt
2361	MVC	Missouri Valley Conference
2362	MVFC	Missouri Valley Football Conference
2363	MVNO	Mobile virtual network operator
2364	mW	Milliwatt
2365	MWESH	Machismo Wizards Extended SHelter (operating system)
2366	MWI	Malawi (ISO 3166 trigram)
2367	MWOA	Mount Wilson Observatory Association
2368	MWTB	Mounted Warfare Test Bed
2369	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2370	MYOB	Mind Your Own Business
2371	MYS	Malaysia (ISO 3166 trigram)
2372	MYT	Mayotte (ISO 3166 trigram)
2373	n	Nano
2374	N3F	National Fantasy Fan Federation
2375	nA	Nanoampere
2376	Na	Sodium (Latin Natrium)
2377	NAA	N-Acetylaspartate
2378	NAAD	North American Air Defense
2379	NAAQS	National Ambient Air Quality Standards
2380	NAAWS	NATO Anti-Air Warfare System
2381	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2382	NACC	North Atlantic Cooperation Council
2383	NACISA	NATO Communications and Information Systems Agency
2384	NACMA	NATO Air Command and Control System Management Agency
2385	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2386	NAEC	U.S. Naval Air Engineering Center
2387	NAFERA	Native American Free Exercise of Religion Act
2388	NAFLD	NonAlcoholic Fatty Liver Disease
2389	NAFO	Northwest Atlantic Fisheries Organization
2390	NAFTA	North American Free Trade Agreement
2391	NAGPRA	Native American Graves Protection and Repatriation Act
2392	NAICS	North American Industry Classification System
2393	NAIL	Neurotics Anonymous
2394	NAILS	National Airspace Integrated Logistics System
2395	NAIRU	Non Accelerating Inflation Rate of Unemployment
2396	NAK	Negative Acknowledge
2397	NAM	Namibia (ISO 3166 trigram)
2398	NAMBLA	North American Man-Boy Love Association
2399	NAMRL	Naval Aerospace Medical Research Laboratory
2400	NaN	Not A Number (computing)
2401	NAO	UK National Audit Office
2402	NAPS	Navy Acquisition Procedures Supplement
2403	NARA	(U.S.) National Archives and Records Administration
2404	NARAL	National Abortion Rights Action League
2405	NARDAC	Naval Regional Data Automation Center
2406	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2407	NARPV	National Association for Remotely Piloted Vehicles
2408	NASCAR	National Association for Stock Car Auto Racing
2409	NASDAQ	National Association of Securities Dealers Automated Quotations
2410	NASED	National Association of State Election Directors [1][2]
2411	NASH	Non-Alcoholic Steatohepatitis
2412	NASP	National Aerospace Plane
2413	NASS	National Association of Secretaries of State [3]
2414	NatGeo	National Geographic
2415	NaUKMA	National University of Kyiv-Mohyla Academy
2416	NAV	Navigation[al]
2417	NAVCAMS	Naval Communications Area Master Station
2418	NAVCC	National Audio-Visual Conservation Center
2419	NAVCENT	Naval Forces U.S. Central Command
2420	NAVDAC	Naval Data Automation Command
2421	NAVEUR	Naval Forces U.S. European Command
2422	NAVFOR	Naval Force
2423	NAVMACS	Naval Modular Automatic Communication Subsystem
2424	NAVNET	Navy Network
2425	NAVS	Non-Cooperative Airborne Vector Scoring
2426	NAVSAT	Navigation Satellite
2427	NAVSPACECOM	U.S. Navy Space Command
2428	NAVSPASUR	U.S. Naval Space Surveillance System
2429	NAVSTAR	Navigation Satellite Timing And Ranging
2430	NAVTACNET	Navy Tactical Network
2431	NAWC	U.S. Naval Air Warfare Center
2432	Nb	Niobium
2433	NBA	National Basketball Association
2434	NBL	National Basketball League (Australia)
2435	NBT	Nitroblue tetrazolium (assay)
2436	nC	Nanocoulomb
2437	NCA	National Command Authority
2438	NCAR	U.S. National Center for Atmospheric Research
2439	NCB	National Codification Bureau
2440	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2441	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2442	NCDDR	U.S. National Center for the Dissemination of Disability Research
2443	NCI	U.S. National Cancer Institute
2444	NCL	New Caledonia (ISO 3166 trigram)
2445	NCLR	National Council of La Raza
2446	NCMO	No Commitment Make Out
2447	NCO	Non-Commissioned Officer
2448	NCP	Net Contracted Purchases
2449	NCR	National Cash Register Co.
2450	NCTR	Non-Co-operative Target Recognition
2451	NCW	Network Centric Warfare
2452	Nd	Neodymium
2453	NDAA	U.S. National Defense Authorization Act
2454	NDBP	Non-Departmental Public Body (Scotland)
2455	NDP	New Democratic Party (Canada)
2456	NDS	Nintendo DS
2457	Ne	Neon
2458	NECTEC	National Electronics and Computer Technology Center (Thailand)
2459	NEMS	National Energy Modeling System (USDOE-EIA)
2460	NEPA	National Environmental Policy Act
2461	NER	Niger (ISO 3166 trigram)
2462	NERICA	New Rice for Africa
2463	NESP	NSA/CSS Enterprise Standards Program
2464	NET	National Educational Television
2465	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2466	NETL	(US) National Energy Technology Laboratory
2467	NETWARS	Network Warfare Simulation
2468	NEX	Navy EXchange
2469	nF	Nanofarad
2470	NF	Norfolk Island (ISO 3166 digram)
2471	NFER	National Foundation for Educational Research
2472	NFG	No Fucking Good
2473	NFHS	National Federation of State High School Associations
2474	NFI	Not F****** Interested
2475	NFK	Norfolk Island (ISO 3166 trigram)
2476	Nfld	Newfoundland
2477	NFPA	National Fluid Power Association (United States)
2478	NFT	No Further Text
2479	NGATS	New Generation Army Targetry System
2480	NGH	Northern General Hospital
2481	NGO	non-governmental organization
2482	NGS	Naval Gunfire Support
2483	nH	Nanohenry
2484	NHANES	National Health and Nutrition Examination Survey
2485	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2486	NHB	No Holds Barred radio (Link)
2487	NHL	National Hockey League
2488	NHRA	National Hot Rod Association
2489	NHS	National Health Service (UK)
2490	Ni	Nickel
2491	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2492	NIAG	NATO Industrial Advisory Group
2493	NIAID	National Institute of Allergies and Infectious Disease
2494	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2495	NIB	New In Box (Internet auction/trading listings)
2496	NIBP	Non-invasive blood pressure monitor
2497	NicA	Nicotine Anonymous
2498	NICAP	National Investigations Committee on Aerial Phenomena
2499	NICE	UK. National Institute for Health and Clinical Excellence
2500	NICHD	National Institute of Child Health and Human Development [4]
2501	NICP	National Inventory Control Point
2502	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2503	NIDRR	National Institute on Disability Research and Rehabilitation
2504	NIEHS	National Institute of Environmental Health Sciences
2505	NIIN	National Item Identification Number
2506	NIMA	National Imagery and Mapping Agency (became NGA)
2507	NIMBY	Not In My Back Yard (See NOME)
2508	NIMG	Not In My Generation
2509	NIN	Nine Inch Nails (band)
2510	NIPR	National Institute of Polar Research (Japan)
2511	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2512	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2513	NISCAP	NSA Information System Certification and Accreditation Program
2514	NISER	National Institute of Science Education and Research
2515	NIST	National Institute of Standards and Technology
2516	NITFS	National Imagery Transmission Format Standard
2517	NIU	Niue (ISO 3166 trigram)
2518	nJ	Nanojoule
2519	NJ	New Jersey (postal symbol)
2520	NJHS	National Junior Honor Society
2521	NJPW	New Japan Pro Wrestling
2522	nK	Nanokelvin
2523	NKA	No Known Allergies
2524	nL	Nanolitre
2525	NLB	Non-Linear Battlefield
2526	NLD	Netherlands (ISO 3166 trigram)
2527	NLF	National Liberation Front (disambiguation)
2528	NLL	National Lacrosse League
2529	NLW	Non-Lethal Weapon
2530	nm	Nanometre
2531	NM	New Mexico (postal symbol)
2532	NMCI	Navy Marine Corps Intranet
2533	NMCS	Not Mission Capable Supply (SM&R code)
2534	NMD	U.S. National Missile Defense
2535	NMN	No middle name
2536	NMR	Nuclear Magnetic Resonance
2537	NMSG	NATO Modelling and Simulation Group
2538	nN	Nanonewton
2539	NNE	North North-East
2540	NNSA	U.S. National Nuclear Security Administration
2541	NNW	North North-West
2542	No	Nobelium
2543	NOAA	U.S. National Oceanic and Atmospheric Administration
2544	NOAF	Norwegian Air Force
2545	NOAO	National Optical Astronomy Observatory
2546	NOC	UK. National Oceanography Centre
2547	NODEF	NATO Oceanographic Data Exchange Format
2548	NOGI	New Orleans Grande Isle (award for diving)
2549	NOLF	Navy OutLying Field
2550	NOME	Not on Mars Either
2551	NOME	Not on Mars Either (see NIMBY)
2552	NOR	Norway (ISO 3166 trigram)
2553	NORELPREF	No religious preference
2554	NORTHAG	Northern Army Group
2555	NOSA	NATO OSI Security Architecture
2556	NOTAFLOF	No One Turned Away For Lack Of Funds
2557	NOW	National Organization for Women
2558	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2559	NPB	Nippon Professional Baseball
2560	NPCS	Non-Passenger Coaching stock (in Railways)
2561	NPD	Nationaldemokratische Partei Deutschlands (German)
2562	NPDI	New Product Development and Introduction
2563	NPG	Needline/Network Participation Group
2564	NPH	Normal Pressure Hydrocephalus
2565	NPO	nothing by mouth
2566	NPOV	Neutral Point Of View
2567	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2568	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2569	NRA	National Rifle Association
2570	NRAO	National Radio Astronomy Observatory
2571	NRDC	(U.S.) Natural Resources Defense Council
2572	NREL	U.S. National Renewable Energy Laboratory
2573	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2574	NRMP	National Resident Matching Program (U.S. medicine)
2575	NRO	U.S. National Reconnaissance Office
2576	NRT	Near Real Time
2577	NRU	Nauru (ISO 3166 trigram)
2578	ns	Nanosecond
2579	nS	Nanosiemens
2580	NSABB	National Science Advisory Board for Biosecurity
2581	NSAID	Non-Steroidal Anti-Inflammatory Drug
2582	NSB	Norges Statsbaner (Norwegian State Railways)
2583	NSC	National Security Council
2584	NSDL	National Science Digital Library (US)
2585	NSG	National System for Geospatial-Intelligence
2586	NSN	National Stock Number
2587	NSNA	National Student Nurses' Association
2588	NSO	National Standardization Office (ABCA)
2589	NSS	(U.S.) Naval Simulation System
2590	NST	(UK) Nimrod Software Team
2591	NSTAC	National Security Telecommunications Advisory Committee
2592	NSW	New South Wales (postal symbol)
2593	nT	Nanotesla
2594	NTDS	Naval Tactical Data System
2595	NTP	Network Time Protocol
2596	NTR	Network Time Reference
2597	NTRA	National Thoroughbred Racing Association
2598	NTSB	National Transportation Safety Board
2599	NTV	Non-Tactical Vehicle
2600	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2601	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2602	NUTS	Nuclear Utilization Target Selection
2603	NUWC	U.S. Naval Undersea Warfare Center
2604	nV	Nanovolt
2605	NVEOL	Night Vision and Electro-Optics Laboratory
2606	NVG	Night Vision Goggles
2607	NVL	Night Vision Laboratory
2608	nW	Nanowatt
2609	NW	North-West
2610	NW	Nuclear Weapon
2611	NWA	National Wrestling Alliance
2612	NWF	National Wildlife Federation
2613	NWFZ	Nuclear-Weapon-Free Zone
2614	NWHN	U.S. National Women's Health Network
2615	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2616	NWOAHM	New Wave of American Heavy Metal
2617	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2618	NWRA	National Wildlife Rehabilitators Association
2619	NWSL	National Women's Soccer League (U.S.)
2620	NWT	North-West Territories
2621	NXA	21st arcade game in the Pump It Up series
2622	NXD	Native XML
2623	NXE	New Xbox Experience
2624	NXG	New Cross Gate station
2625	NXL	National XBall League
2626	NXN	Nike Cross Nationals
2627	NY	New York (postal symbol)
2628	NYC	New York City
2629	NYHA	New York Heart Association
2630	NYO	National Youth Orchestra of Great Britain
2631	NYSE	New York Stock Exchange
2632	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2633	NZC	New Zealand Cricket
2634	NZL	New Zealand (ISO 3166 trigram)
2635	NzL	Noze looan (online/event listings)
2636	NZOSS	New Zealand Open Source Society
2637	NZRU	New Zealand Rugby Union
2638	OAC	On Approved Credit
2639	OAP	Old Age Pensioner (UK)
2640	OARSI	Osteoarthritis Research Society International
2641	OAS	Organization of American States
2642	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2643	OASIS	Ontario Association of Sewage Industry Services
2644	OASP	Operational Analysis Support Paper/Plan
2645	OAU	Organization for African Unity
2646	OBE	Officer of the Order of the British Empire
2647	OBX	Outer Banks (North Carolina)
2648	OC	Officer Commanding
2649	OCD	Obsessive-Compulsive Disorder
2650	OCFS	Oracle Cluster File System
2651	OCFS2	Oracle Cluster File System Release 2
2652	OCMCC	[2] Orchard County MCC
2653	OCN	Oncology Certified Nurse
2654	OCO	Oort Cloud Object
2655	OCR	Optical Character Recognition
2656	OCS	see entry
2657	ODAS	OCA-DLR Asteroid Survey
2658	ODBC	Open DataBase Connectivity
2659	OEA	(U.S.) Office of Economic Adjustment
2660	OECD	Organisation for Economic Co-operation and Development (international)
2661	OED	Oxford English Dictionary
2662	OEG	Operation Exposure Guidance
2663	OEIS	On-Line Encyclopedia of Integer Sequences
2664	OEM	Original Equipment Manufacturer
2665	OFA	Occipital Face Area
2666	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2667	OGC	Open Geospatial Consortium
2668	OGD	Other Government Department
2669	OGO	Other Government Organization
2670	OH	Ohio (postal symbol)
2671	OHC	OverHead-Cam engine
2672	OHHLA	Original Hip-Hop Lyrics Archive
2673	OHIP	Ontario Health Insurance Plan
2674	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2675	OHP	Observatoire de Haute-Provence
2676	OHSS	Ovarian Hyperstimulation Syndrome
2677	OIC	Officer In Charge
2678	OIF	Operation Iraqi Freedom
2679	OIOC	Oriental & India Office Collections (in the British Library)
2680	OJT	On-the-Job Training
2681	OKC	Oklahoma City
2682	OLED	Organic Light-Emitting Diode
2683	OLS	Operational Linescan System
2684	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2685	OME	Osaka Mercantile Exchange
2686	OMFG	Oh My Fucking God
2687	OMG	Oh My God or Or My Gosh
2688	OMGW	Oh My Gosh it's Windy
2689	OMN	Oman (ISO 3166 trigram)
2690	OMNCS	U.S. Office of the Manager for the National Communications System
2691	OMP	Order of Mapungubwe in Platinum
2692	OMS	Order of Mapungubwe in Silver
2693	OMT	Object Model Template
2694	ON	Ontario (postal symbol)
2695	ONC	Orthopaedic Nurse Certified
2696	ONG	Orthodontic National Group
2697	ONI	(U.S.) Office of Naval Intelligence
2698	ONS	Operational Needs Statement
2699	OOAD	Object Oriented Analysis and Design
2700	OOBE	Out-of-body experience
2701	OOCL	Orient Overseas Container Line
2702	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2703	OOF	Out of Facility
2704	OOMF	One Of My Followers
2705	OOO	Out Of the Office
2706	OOTW	Operations Other Than War
2707	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
2708	OPAC	Online Public Access Catalogue
2709	OPCON	Operational control
2710	OPCW	Organisation for the Prohibition of Chemical Weapons
2711	OPEC	Organization of the Petroleum Exporting Countries
2712	OPFOR	Opposing force
2713	OPINTEL	Operational Intelligence
2714	OPLAN	Operation plan (also OpPlan)
2715	OPORD	Operation order
2716	OPSEC	Operations security,Open Platform for Security
2717	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2718	OPTAR	Operational target
2719	OPV	Offshore Patrol Vessel
2720	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)
2721	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
2722	ORAU	Oak Ridge Associated Universities
2723	ORB	Object Request Broker
2724	ORBAT	Order of Battle
2725	ORD	Office of Research and Development,Operational Requirements Document
2726	ORF	Operational iness Float
2727	ORISE	Oak Ridge Institute for Science and Education
2728	ORNL	Oak Ridge National Laboratory
2729	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
2730	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2731	OS	Operating System
2732	Os	Osmium
2733	OSA	Order of St. Augustine
2734	OSCE	Organisation for Security and Cooperation in Europe
2735	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2736	OSDL	Open Source Development Labs
2737	OSE	Own Separate Entrance
2738	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2739	OSETI	Optical SETI also Optical SETI
2740	OSHA	Occupational Safety and Health Administration
2741	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2742	OSIA	(U.S.) On-Site Inspection Agency
2743	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)
2744	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2745	OSM	One Saturday Morning
2746	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2747	OSPA	Operations Security Professional's Association site of OSPA
2748	OSPA	Oregon School Psychologists Association [3]
2749	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2750	OSU	Ohio State University,Oklahoma State University
2751	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2752	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2753	OTC	Over-The-Counter (drugs)
2754	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2755	OTEA	(U.S. Army) Operational Test Evaluation Agency
2756	OTI	Office of Transition Initiatives (United States Agency for International Development)
2757	OTOH	On The Other Hand
2758	OTS	Off the scale,sexually untouchable except for a lot of money
2759	OTSBH	Over The Shoulder Boulder Holder
2760	OTW	On The Way
2761	OTYBL	Over To You Blue Leader
2762	OTYRL	Over To You Red Leader
2763	OU	University of Oklahoma
2764	OW	Old Wykehamist
2765	OWN	Oprah Winfrey Network
2766	OX	IATA code for Orient Thai Airlines
2767	OXC	Optical cross-connect
2768	OXM	Official Xbox Magazine
2769	OXT	Oxytocin
2770	OZ	(?) Australia
2771	p	pico
2772	P2P	Peer-to-peer (networking)
2773	pA	picoampere
2774	PAA	Position Area for Artillery
2775	PABX	Private Automated Branch eXchange (company phone system)
2776	PACOM	(U.S.) Pacific Command
2777	PADI	Professional Association of Diving Instructors
2778	PAEK	PolyArylEtherKetone
2779	PAFC	Plymouth Argyle Football Club
2780	PAH	Polycyclic aromatic hydrocarbon
2781	PAHO	Pan American Health Organization
2782	PAK	Pakistan (ISO 3166 trigram)
2783	PAM	Precision Attack Missile
2784	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2785	PARC	Palo Alto Research Center
2786	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2787	PARP	(NATO Partnership for Peace) Planning And Review Process
2788	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2789	PAS	See entry
2790	PASR	Personnel Accounting and Strength Reporting
2791	PATH	Port Authority Trans-Hudson
2792	PAYD	Pay As You Drive
2793	PAYE	Pay As You Earn
2794	Pb	Lead (Latin Plumbum)
2795	PB	PolyButylene
2796	PBB	PolyBrominated Biphenyl
2797	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2798	PBD	PolyButaDiene
2799	PBDE	PolyBrominated Diphenyl Ether
2800	PBI	PolyBenzImidazole
2801	PBN	PolyButylene Naphthalate
2802	PBOH	Please Become Old History
2803	PBT	PolyButylene Terephthalate
2804	PBX	Private Branch eXchange (company phone system)
2805	pC	picocoulomb
2806	PCAS	Planet-Crossing Asteroid Survey
2807	PCB	see entry
2808	PCCB	Porsche Ceramic Composite Brake
2809	PCCIP	President's Commission on Critical Infrastructure Protection
2810	PCE	PerChlorEthylene
2811	PCIe	Peripheral Component Interconnect Express (computer bus)
2812	PCL	Passive Coherent Location
2813	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2814	PCN	Pitcairn Islands (ISO 3166 trigram)
2815	PCPI	Physician Consortium for Performance Improvement (AMA)
2816	PCR	Polymerase chain reaction
2817	PCSSD	Pulaski County Special School District
2818	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2819	Pd	Palladium
2820	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2821	PDL	Pure Dumb Luck (Texan punk band)
2822	PDN	Pull-Down Network
2823	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2824	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2825	PE	Professional Engineer
2826	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2827	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2828	PEEK	PolyEtherEtherKetone
2829	PEET	Partnerships for Enhancing Expertise in Taxonomy
2830	PEK	PolyEtherKetone
2831	PEPFAR	President's Emergency Plan For AIDS Relief
2832	PER	Peru (ISO 3166 trigram)
2833	perl	usually lower case Practical Extraction and Report Language
2834	PES	PolyEtherSulfone
2835	PEST	UK Public Engagement with Science and Technology
2836	PETE	PolyEthyleneTErephthalate
2837	PETP	PolyEthyleneTerePhthalate
2838	pF	picofarad
2839	PFD	Permanent Fund Dividend = personal flotation device
2840	PFE	Permanent Forest Estate
2841	PfP	Partnership for Peace
2842	Pg	petagram
2843	pg	picogram
2844	PGCE	Postgraduate Certificate in Education
2845	PGD	Pre-implantation Genetic Diagnosis
2846	PGENI	Pharmaco-Genetics for Every Nation Initiative
2847	PGH	Pre-implantation Genetic Haplotyping
2848	PGM	Precision-Guided Munition
2849	PGP	Pretty Good Privacy
2850	PHL	Philippines (ISO 3166 trigram)
2851	PHQ	Patient Health Questionnaire
2852	Pi	Pebi
2853	PIB	PolyIsoButylene
2854	PIC	Person In Charge
2855	PICNIC	Problem In Chair Not In Computer
2856	PICS	Private Investment Capital Subscription
2857	PIF	Partners in Flight
2858	PIG	Pipeline Inspection Gauge
2859	PIN	Personal Identification Number
2860	PINF	People In Need Foundation (Czech charitable organisation)
2861	PIPA	Program on International Policy Attitudes
2862	PIR	Priority Intelligence Requirement
2863	PIRA	Provisional Irish Republican Army
2864	PIREPS	Pilot Reports
2865	PITA	Pain In The Ass
2866	PJ	petajoule
2867	pJ	picojoule
2868	PJHQ	Permanent Joint Headquarters
2869	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2870	PKI	Public Key Infrastructure (cryptography)
2871	PKU	Phenylketonuria
2872	pL	picolitre
2873	PLAID	Precision Location and Identification
2874	PLB	Personal Locator Beacon
2875	PLC	Public Limited Company (British)
2876	PLCC	Plastic Leaded Chip Carrier (electronics)
2877	PLD	Probable Line of Deployment
2878	PLEBS	People Lacking Everyday Basic Skills
2879	PLF	Parachute Landing Fall
2880	PLIF	Planar Laser-Induced Fluorescence
2881	PLL	Phase-Locked Loop (electronics)
2882	PLM	Polarized Light Microscope/Microscopy
2883	PLMBA	Phospholipid Bilayer Microarray
2884	Pln	Platoon
2885	PLO	Palestine Liberation Organization
2886	PLOKTA	Press Lots Of Keys To Abort
2887	PLP	Platonic Life Partner
2888	PLUTO	Pipe Line Under The Ocean
2889	PLW	Palau (ISO 3166 trigram)
2890	pm	picometre
2891	PMC	Primary Motor Cortex
2892	PMI	Positive Material Identification
2893	PMID	PubMed Identifier
2894	PMMA	PolyMethylMethAcrylate
2895	PMS	Premenstrual Syndrome
2896	PMSL	Piss Myself Laughing (Internet shorthand)
2897	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
2898	pN	piconewton
2899	PNAC	Project for the New American Century
2900	PNVS	Pilot Night Vision Sensor
2901	Po	Polonium
2902	PO	Post Office
2903	PO	Purchase Order
2904	POCD	Post-Operative Cognitive Dysfunction
2905	pod	Plain Old Documentation
2906	POFF	Plain Old Flat File
2907	POGO	Project On Government Oversight
2908	POI	Program Of Instruction
2909	POK	Plane Of Knowledge
2910	POLAD	Political Advice
2911	POMDP	Partially observable Markov decision process
2912	PooS	Poo Sniffer (Internet shorthand)
2913	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
2914	POSH	Port Outbound Starboard Home (alleged)
2915	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
2916	POT	Plane Of Tranquility
2917	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
2918	POTUS	President of the United States
2919	POV	Point of view
2920	POW	Prisoner of war
2921	PPASC	(U.S.) Plans and Program Analysis Support Center
2922	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
2923	PPLI	Precise Participant Location & Identification
2924	PPM	Project Planning and Management
2925	PPO	PolyPhenylene Oxide
2926	PPQN	Pulses Per Quarter Note (ditto)
2927	PPQT	Pre-Production Qualification Test
2928	PPV	Pay-per-view
2929	Pr	Pastor, Priest
2930	PR	Public Relations
2931	Prb	Presbyter
2932	PRBO	Point Reyes Bird Observatory
2933	PRC	People's Republic of China
2934	PRD	CERDEC Product Realization Directorate
2935	PRFG	Partial Fog (METAR Code)
2936	PRI	Puerto Rico (ISO 3166 trigram)
2937	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
2938	PRM	Personnel iness Management
2939	PRY	Paraguay (ISO 3166 trigram)
2940	Ps	petasecond
2941	pS	picosiemens
2942	PSG	Pacific Seabird Group
2943	PSI	Portable Source Initiative
2944	PSI	Pounds per square inch
2945	PSS	Personnel System Support
2946	PST	Pacific Standard Time (UTC-8 hours)
2947	PSU	Pennsylvania State University
2948	PsyOp	Psychological Operations
2949	pT	picotesla
2950	Pt	Platinum
2951	PTA	Parent-Teacher Association
2952	PTAL	Public Transport Accessibility Level
2953	PTES	People's Trust for Endangered Species
2954	PTFE	PolyTetraFluoroEthylene
2955	PTI	Pardon the Interruption
2956	PTSD	Post-Traumatic Stress Disorder
2957	Pu	Plutonium
2958	Pub	Publication
2959	PUG	PET Users Group
2960	PUN	Pull-Up Network
2961	PUP	Pull-Up Point
2962	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
2963	PV	petavolt
2964	pV	picovolt
2965	PvE	Player versus Environment
2966	PvP	Player versus Player
2967	PVR	Personal Video Recorder
2968	PvZ	Plants vs. Zombies
2969	PW	Palau (postal symbol; ISO 3166 digram)
2970	pW	picowatt
2971	PWA	Pirates With Attitude
2972	PWBA	Pension and Welfare Benefits Administration
2973	PWC	PieceWise Constant (describing a mathematical function)
2974	PwC	PricewaterhouseCoopers (international accounting firm)
2975	PWL	PieceWise Linear (describing a mathematical function)
2976	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
2977	PWR	Pressurized Water Reactor
2978	PX	Post eXchange
2979	PYF	French Polynesia (ISO 3166 trigram)
2980	PYMWYMI	Put Your Money Where Your Mouth Is
2981	Q1	First Quarter
2982	Q2	Second Quarter
2983	Q3	Third Quarter
2984	Q4	Fourth Quarter
2985	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
2986	Qantas	Queensland And Northern Territory Aerial Services
2987	QAT	Qatar (ISO 3166 trigram)
2988	QB	Quarterback (football)
2989	QCD	Quantum ChromoDynamics
2990	QDR	Quadrennial Defense Review
2991	QEH	Queen Elizabeth's Hospital
2992	QK	Air Canada Jazz (IATA airline designator)
2993	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
2994	QPS	Quark Publishing System
2995	QSCAT	Quick Scatterometer satellite
2996	QSL	Québec Sign Language
2997	QSO	Quasi-Stellar Object
2998	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
2999	Quasar	Quasi-stellar radio source
3000	QUB	Queen's University Belfast
3001	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3002	QZ	Awair (IATA airline designator)
3003	R2I	Resistance to Interrogation
3004	RA	Radio Australia
3005	Ra	Radium
3006	RAAF	Royal Australian Air Force
3007	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3008	RACK	Risk Aware Consensual Kink (SM phrase)
3009	Racon	RAdar beaCON
3010	RADA	Royal Academy of Dramatic Art
3011	Radar	Radio Detection And Ranging
3012	RadB	Rad51/Dmc1 homologous protein
3013	RADb	Routing Assets Data Base
3014	RADC	Region Air Defence Commander
3015	RAE	UK Royal Aircraft Establishment (-1991)
3016	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3017	RAM	Royal Air Maroc
3018	Ramark	RAdar MARKer
3019	RAOC	Rear Area Operation Centre
3020	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3021	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3022	RATELO	Radiotelephone Operator
3023	Rb	Rubidium
3024	RB	Running Back (football)
3025	RBI	Runs Batted In
3026	RC	see entry
3027	RCAF	Royal Canadian Air Force
3028	RCC	Rescue Co-ordination Centre
3029	RCCO	Royal Canadian College of Organists
3030	RCHA	Royal Canadian Horse Artillery (regiment)
3031	RCMP	Royal Canadian Mounted Police
3032	RD	Radio Disney
3033	RDD	Radiological Dispersion Device
3034	RDM	Remotely Delivered/Deliverable Mine
3035	RDT	Remote Digital Terminal
3036	RDV	Remote Detection Vehicle
3037	Re	Rhenium
3038	RE	Royal Engineers
3039	REACT	Remote Electronically Activated Control Technology
3040	REAM	Retired Educators Association of Minnesota
3041	RECCE	Reconnaissance
3042	REEF	Reef Environmental Education Foundation
3043	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3044	REME	Royal Electrical and Mechanical Engineers
3045	RERC	Rehabilitation Engineering Research Center
3046	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3047	REU	Réunion (ISO 3166 trigram)
3048	Rf	Rutherfordium
3049	RFD	Request for Documentation
3050	RFE	Request for Evaluation
3051	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3052	RFF	Right of First Refusal (legal term)
3053	RFID	Radio Frequency IDentification
3054	RFL	Rugby Football League
3055	RFP	Request for Proposal
3056	RFQ	Request for Quotation
3057	RFT	Request for Tender
3058	RFU	Rugby Football Union
3059	RG	Republican Guard
3060	Rg	Roentgenium
3061	RGB	Red Green Blue (colour model)
3062	RGBI	Red Green Blue Intensity (ditto)
3063	Rh	Rhodium
3064	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3065	RHIC	Relativistic Heavy Ion Collider
3066	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3067	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3068	RHU	Replacement Holding Unit
3069	RI	Rhode Island (postal symbol)
3070	RIAA	Recording Industry Association of America
3071	RIBA	Royal Institute of British Architects
3072	RIFA	Red imported fire ant
3073	RILA	Retail Industry Leaders Association
3074	RIMVS	Retinal Imaging Machine Vision System
3075	RINO	Republican In Name Only[1]
3076	RISC	Reduced Instruction Set Computer
3077	RJD	Reduced Julian Day
3078	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3079	RKO	Radio-Keith-Orpheum Pictures
3080	RLP	Recognised [Operating/Operational] Land Picture
3081	RLS	Restless Leg Syndrome
3082	RLY	Rally Point
3083	RM	see separate disambiguation page
3084	RMC	Robert Menzies College
3085	RMDA	Records Management and Declassification Agency
3086	RMP	Recognised [Operating/Operational] Maritime Picture
3087	RN	Radio Netherlands
3088	Rn	Radon
3089	RNA	RiboNucleic Acid
3090	RNAD	Royal Naval Armaments Depot (UK)
3091	RNPS	Radio Network Planning System
3092	RNZ	Radio New Zealand
3093	RNZI	Radio New Zealand International
3094	ROA	Rate Of Ascent
3095	ROE	Rules Of Engagement
3096	ROFLOL	Rolling On the Floor Laughing Out Loud
3097	ROH	Ring of Honor
3098	ROK	Republic of Korea
3099	ROP	Render Output Pipeline
3100	ROPE	Research Opportunity and Performance Evidence
3101	ROS	Reactive Oxygen Species
3102	ROU	Romania (ISO 3166 trigram)
3103	ROV	Remotely Operated Vehicle
3104	ROZ	Restricted Operations Zone
3105	RPA	Regional Plan Association
3106	RPD	Recognition-Primed Decision-making
3107	RPF	Rwandan Patriotic Front
3108	RPL	Reverse Polish Lisp
3109	rpm	revolutions per minute
3110	RPN	reverse Polish notation
3111	rps	revolutions per second
3112	RPV	Remotely Piloted Vehicle
3113	RQ	Puerto Rico (FIPS 10-4 territory code)
3114	RRB	Railroad Retirement Board
3115	RRN	Recurrence Rate Number
3116	RRP	Recurrent Respiratory Papillomatosis
3117	RRS	Racing Rules of Sailing
3118	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3119	RS	Russia (FIPS 10-4 country code)
3120	RSI	Repetitive Strain Injury
3121	RSJ	Rolled Steel Joist (construction)
3122	RSN	Real Soon Now (coined by author Jerry Pournelle)
3123	RSPB	(UK) Royal Society for the Protection of Birds
3124	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3125	RSR	Required Supply Rate
3126	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3127	RSRI	Red Sands Research Institute
3128	RSS	Really Simple Syndication
3129	RTA	Road traffic accident (British)
3130	RTBF	Radio-Télévision belge de la Communauté française
3131	RTF	Rich Text Format
3132	RTFM	the Fucking/Fine Manual
3133	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3134	RTI	Run-Time Infrastructure (Simulation)
3135	RTL	see entry
3136	RTP	Real-time Transport Protocol
3137	RTS	see entry
3138	RTT	Round Trip Timing
3139	RU	Russia (ISO 3166 digram)
3140	Ru	Ruthenium
3141	RUC	Royal Ulster Constabulary
3142	RUS	Russia (ISO 3166 trigram)
3143	RUSI	Royal United Services Institute for Defence Studies
3144	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3145	RWA	Rwanda (ISO 3166 trigram)
3146	RWH	Rain Water Harvesting
3147	RWR	Radar Warning Receiver
3148	RWS	Remote Weapon Station
3149	RX	Receive
3150	SBNO	Standing but not operating (in reference to amusement parks)
3151	SCOTUS	Supreme Court of the United States
3152	SCROTUS	So-called Ruler of the United States
3153	SDHC	Secure Digital High Capacity
3154	SDXC	Secure Digital eXtended Capacity
3155	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3156	SGOTUS	Second Gentleman of the United States
3157	SHO	Showtime (see also sho.com)
3158	SIRI	Service Interface for Real Time Information
3159	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3160	SLOTUS	Second Lady of the United States (the vice president's wife)
3161	SoCon	Southern Conference (U.S. college sports)
3162	STB	Surface Transportation Board[2]
3163	SWAC	Southwestern Athletic Conference
3164	SWAN	System for Wearable Audio Navigation
3165	SWAT	Special Weapons And Tactics
3166	SWF	Single White Female
3167	Ta	Tantalum
3168	TAACOM	U.S. Theater Army Area Command
3169	TAADCOORD	Theatre Army Air Defence Co-ordinator
3170	TAAR	Trace Amine-Associated Receptor
3171	TAC	U.S. Tactical Air Command (1946-1992)
3172	TACAN	Tactical Air Navigation
3173	TACCO	Tactical Coordinator
3174	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3175	TACDAR	Tactical Detection And Reporting
3176	TACSOP	Tactical SOP (Standing Operating Procedure)
3177	TADIL	Tactical Digital Information Link
3178	TAI	Target[ed] Area of Interest
3179	TAJ	Tom and Jerry
3180	TAJT	Tom and Jerry Tales
3181	TALES	Technical Advice and Lexicon for Enabling Simulation
3182	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3183	TANP	Terrain-Aware Network Planner
3184	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)
3185	TAPPS	Texas Association of Private and Parochial Schools
3186	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3187	TAS	Tasmania (postal symbol)
3188	TASER	Thomas A. Swift's Electric Rifle
3189	TASM	Tactical Air-to-Surface Missile
3190	TAT	Tourism Authority of Thailand
3191	TATP	TriAcetone TriPeroxide
3192	TATT	Tired All The Time (medical diagnosis in-joke)
3193	Tb	Terbium
3194	TB	Tuberculosis
3195	TBA	to be announced
3196	TBBPA	TetraBromoBisPhenol-A
3197	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3198	TBF	to be fair
3199	TBH	To Be Honest
3200	TBL	Turkish Basketball League
3201	TBS	Turner Broadcasting System
3202	TBT	Tributyltin
3203	Tc	Technetium
3204	TCAA	Top Counter-Assault Agents
3205	TCAS	Traffic Collision Avoidance System
3206	TCCCS	Tactical Command,Control and Communication System
3207	TCD	Chad (ISO 3166 trigram)
3208	TCHD	Truck Cargo Heavy Duty
3209	TCL	Tool Command Language
3210	TCM	Turner Classic Movies
3211	TCU	Texas Christian University
3212	TCW	Tasty Coma Wife
3213	TCWMS	Tele-Center Workforce Management System
3214	TDA	The Disney Afternoon
3215	TDL	Tactical Data Link
3216	TDM	Time-Division Multiplexing
3217	TDMA	Time Division Multiple Access
3218	TDP	Technology Demonstration Programme
3219	TDRS	Tracking Data and Relay Satellite
3220	Te	Tellurium
3221	TEAL	Tasman Empire Airways Limited
3222	Team	Together everyone achieves more
3223	TEAMS	The East African Marine System (fiber optic cable)
3224	TED	Technology Entertainment Design prize
3225	TENCAP	Tactical Exploitation of National Capabilities
3226	TERS	Tactical Event Reporting System
3227	TES	Tactical Event System
3228	TEST	Thesaurus of Engineering and Scientific Terms
3229	TEU	Twenty-foot equivalent unit (cargo capacity)
3230	TeVeS	Tensor Vector Scalar theory
3231	TFMPP	Trifluorophenylmethylpiperazine
3232	TFR	Total Fertility Rate
3233	TFT	Thin-Film Transistor
3234	Tg	Teragram
3235	TG	Togo (ISO 3166 digram)
3236	TGO	Togo (ISO 3166 trigram)
3237	Th	Thorium
3238	THA	Thailand (ISO 3166 trigram)
3239	THAAD	Terminal High Altitude Area Defence
3240	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3241	THEL	Tactical High Energy Laser ACTD
3242	THG	Tetrahydrogestrinone
3243	TIA	Total Information Awareness initiative
3244	TIA	Transient Ischemic Attack
3245	TIALD	Thermal Imaging and Airborne Laser Designation
3246	TIBS	Tactical Information Broadcast System
3247	TIC	Troops In Contact
3248	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3249	TINC	There Is No Cabal
3250	TIP	Thermal Identification Panel
3251	tits	Toes in the Sand
3252	TJD	Truncated Julian Day
3253	TJK	Tajikistan (ISO 3166 trigram)
3254	TKL	Tokelau (ISO 3166 trigram)
3255	TKM	Turkmenistan (ISO 3166 trigram)
3256	Tl	Thallium
3257	TLA	Three-Letter Abbreviation/Acronym
3258	TLAM	Tomahawk Land Attack Missile
3259	TLATOJL	The Life and Times of Juniper Lee
3260	TLPM	T1 Line Performance Monitor
3261	Tm	Terametre
3262	TMAP	Texas Medication Algorithm Project
3263	TMC	The Movie Channel
3264	TMD	Theatre Missile Defence
3265	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3266	TMI	Too Much Information
3267	TMJ	TemporoMandibular Joint (syndrome)
3268	TMNT	Teenage Mutant Ninja Turtles
3269	TMPG	Transparent Multi-Platform Gateway
3270	TMR	Twin Main Rotors (helicopter type)
3271	TMS	Transcranial Magnetic Stimulation
3272	TMT	Thirty Meter Telescope
3273	TMTOWTDI	There's Than One Way To Do It (from Perl)
3274	TNA	Total Nonstop Action Wrestling
3275	TNO	Trans-Neptunian Object
3276	TOBS	Time of OBServation
3277	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3278	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3279	TOGS	Thermal Observation Gunnery Sight
3280	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3281	TON	Tonga (ISO 3166 trigram)
3282	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
3283	TOT	Time On Target
3284	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3285	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3286	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3287	TPI	The point is
3288	TPO	Thrombopoietin
3289	TPS	The Pennington School
3290	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3291	TQ	Top Qualifier (similar to Pole Position in car racing)
3292	TRA	Technology iness Assessment
3293	TRAC	(U.S. Army) TRADOC Analysis Center
3294	TRACON	Terminal Radar Approach Control
3295	TRADOC	(U.S. Army) Training and Doctrine Command
3296	TRANSCOM	U.S. Transportation Command
3297	TRAP	Tactical Receive equipment and related Applications
3298	TRASANA	TRADOC Systems Analysis Agency
3299	TRD	Towed Radar Decoy
3300	TRIGAT	Third Generation Antitank (missile)
3301	TRL	Technology readiness level
3302	Trp	Troop
3303	TRU	Transuranic
3304	TRUEX	Training in Urban Environment Exercise
3305	TRW	Thompson Ramo Wooldridge Inc.
3306	Ts	Terasecond
3307	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3308	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3309	TSEC	Transmission Security Encryption Code
3310	TSL	Transportation Security Laboratory
3311	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3312	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3313	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3314	TSR	Terminate and Stay Resident
3315	TSSIA	The Subject Says It All
3316	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3317	TTCT	Torrance Tests of Creative Thinking
3318	TTFN	Ta Ta For Now
3319	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3320	TTO	Trinidad and Tobago (ISO 3166 trigram)
3321	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3322	TTTEAF	Thomas the Tank Engine and Friends
3323	TTY	TeleTYpewriter (Printer)
3324	TTYL	To You Later (Internet slang)
3325	TTZ	Tetrazolium
3326	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3327	TUC	Trades Union Congress
3328	TUG	TeX Users Group
3329	TUI	Text-based user interface (cf. CLI),among other uses
3330	TUN	Tunisia (ISO 3166 trigram)
3331	TUNS	Technical University of Nova Scotia
3332	TUR	Turkey (ISO 3166 trigram)
3333	TUSK	Tank Urban Survival Kit
3334	TUV	Tuvalu (ISO 3166 trigram)
3335	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3336	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3337	TVA	Tennessee Valley Authority
3338	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3339	TVR	TreVor (Wilkinson) Racing
3340	TVS	Tornado vortex signature
3341	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3342	TWAIN	Technology Without An Interesting Name
3343	TWE	Trans World Entertainment
3344	TWI	The Welding Institute
3345	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
3346	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3347	TWP	Technical Working Paper
3348	TWS	Thermal Weapon Sight,Track While Scan
3349	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3350	TXV	Thermostatic Expansion Valve
3351	TYT	Take Your Time,Internet chat abbreviation
3352	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3353	TZA	Tanzania (ISO 3166 trigram)
3354	TZC	Tetrazolium chloride
3355	U	Uranium
3356	UA	Ukraine (ISO 3166 digram) Unit of Action
3357	UAAP	University Athletic Association of the Philippines
3358	UAB	University of Alabama at Birmingham
3359	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3360	UBC	United Baptist Church,University of British Columbia
3361	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3362	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3363	UCBSA	United Cricket Board of South Africa
3364	UCF	University of Central Florida
3365	UCLA	University of California at Los Angeles
3366	UCLES	University of Cambridge Local Examinations Syndicate
3367	UCR	University of California at Riverside
3368	UCR	University of Costa Rica
3369	UCS	Union of Concerned Scientists
3370	UCSB	University of California at Santa Barbara
3371	UCSD	University of California at San Diego
3372	UDAS	Uppsala-DLR Asteroid Survey
3373	UDDI	Universal Description,Discovery and Integration
3374	UDTS	Uppsala-DLR Trojan Survey
3375	UE	Unit of Employment
3376	UEFA	Union of European Football Associations
3377	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3378	UFC	Ultimate Fighting Championship
3379	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3380	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3381	UGA	Uganda (ISO 3166 trigram)
3382	UGV	Unmanned Ground Vehicle
3383	UHF	Ultra High Frequency
3384	UHMW	Ultra-High Molecular Weight
3385	UHRB	Ultra-High Resolution Building (simulation)
3386	UIC	University of Illinois at Chicago
3387	UID	User ID
3388	UIUC	University of Illinois at Urbana-Champaign
3389	UJTL	Universal Joint Task List
3390	UKIP	United Kingdom Independence Party
3391	UKR	Ukraine (ISO 3166 trigram)
3392	UL	Underwriters Laboratories
3393	ULF	Ultra Low Frequency
3394	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3395	UMCP	Unit Maintenance Collection Point
3396	UMES	University of Maryland Eastern Shore
3397	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3398	UMIST	University of Manchester Institute of Science and Technology
3399	UMTS	Universal Mobile Telecommunications System
3400	UN	United Nations
3401	UNABOM	University and airline bomber (FBI case name)
3402	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3403	UNAMSIL	United Nations Mission in Sierra Leone
3404	UNCF	United Negro College Fund
3405	UNCLOS	United Nations Convention on the Law of the Sea
3406	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3407	UNCTAD	United Nations Conference on Trade and Development
3408	UNDCP	United Nations Drug Control Programme
3409	UNDE	(i/a) Union of National Defence Employees (Canada)
3410	UNDP	United Nations Development Programme
3411	UNEP	United Nations Environment Programme
3412	UNFCCC	United Nations Framework Convention on Climate Change
3413	UNFICYP	United Nations Peacekeeping Force in Cyprus
3414	UNGEGN	United Nations Group of Experts on Geographical Names
3415	UNHCR	United Nations High Commission (er) for Refugees
3416	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3417	UNICRI	United Nations Interregional Crime and Justice Research Institute
3418	UNIDO	United Nations Industrial Development Organization
3419	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3420	UNMIK	United Nations Interim Administration Mission in Kosovo
3421	UNOSOM	United Nations Operations in Somalia
3422	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3423	UNRISD	United Nations Research Institute for Social Development
3424	UNSM	Union of Nova Scotian Municipalities
3425	UNTAC	United Nations Transitional Authority in Cambodia
3426	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3427	UNU	United Nations University
3428	UPdM	Università Popolare della Multimedialità
3429	UPI	United Press International
3430	UPN	United Paramount Network
3431	UPU	Universal Postal Union
3432	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3433	URD	User Requirements Document
3434	URY	Uruguay (ISO 3166 trigram)
3435	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3436	USAF	United States Air Force
3437	USAFSPC	U.S. Air Force Space Command
3438	USAID	United States Agency for International Development
3439	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3440	USAREUR	United States Army Europe
3441	USB	Universal Serial Bus
3442	USCG	United States Coast Guard
3443	USDA	United States Department of Agriculture
3444	USDI	United States Department of the Interior
3445	USDOE	United States Department of Energy
3446	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3447	USEC	United States Enrichment Corporation
3448	USFL	United States Football League
3449	USFWS	United States Fish and Wildlife Service
3450	USGS	United States Geological Survey
3451	USIA	United States Information Agency
3452	USJFCOM	United States Joint Forces Command
3453	USMC	United States Marine Corps
3454	USMNT	United States men's national (soccer) team
3455	USN	United States Navy
3456	USNB	United States Naval Base
3457	USNG	United States National Grid
3458	USNH	United States Naval Hospital
3459	USNI	United States Naval Institute
3460	USNO	U.S. Naval Observatory
3461	USNOFS	United States Naval Observatory Flagstaff Station
3462	USNP	United States Newspaper Program
3463	USNR	United States Navy Reserve
3464	USNS	United States Naval Ship
3465	USNZ	University Sport New Zealand
3466	USPS	United States Postal Service
3467	USPTO	United States Patent and Trademark Office
3468	USS	United States ship (sometimes meaningless; see Star Trek)
3469	USSPACECOM	United States Space Command
3470	USSR	Union of Soviet Socialist Republics
3471	UST	Underground Storage Tank
3472	USTRANSCOM	United States Transportation Command
3473	USWNT	United States women's national (soccer) team
3474	UT	Universal Time
3475	UTEP	University of Texas at El Paso (pronounced you-tep)
3476	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3477	UUA	Unitarian Universalist Association
3478	UUID	Universally Unique Identifier (see also GUID)
3479	UUV	Unmanned Underwater Vehicle
3480	UW	University of Washington
3481	UWO	University of Western Ontario
3482	UWT	Under Water Telephone
3483	UWTG	Under Water Tug
3484	UWW	United World Wrestling
3485	UXO	Unexploded Ordnance
3486	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3487	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3488	UZB	Uzbekistan (ISO 3166 trigram)
3489	VACIS	Vehicle And Container Inspection System
3490	VACIS	Victorian Ambulance Clinical Information System
3491	VANOS	Variable Nockenwelle System
3492	VAO	Vienna Art Orchestra
3493	VBA	Visual Basic for Applications
3494	vCJD	Variant Creutzfeldt-Jakob Disease
3495	VCNO	(U.S.) Vice Chief of Naval Operations
3496	VCofS	Vice Chief of Staff
3497	VCR	Video cassette recorder
3498	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3499	VDFS	VisualSVN Distributed File System (VDFS)
3500	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3501	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3502	VEN	Venezuela (ISO 3166 trigram)
3503	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3504	VfD	s for deletion (used in Wikipedia)
3505	VFM	Value For Money
3506	VFMO	Very Fast Moving Object (astronomy)
3507	VFT	Virtual Function Table
3508	VFW	Veterans of Foreign Wars
3509	VG	British Virgin Islands (ISO 3166 digram)
3510	VGB	British Virgin Islands (ISO 3166 trigram)
3511	VH1	Video Hits One
3512	VHF	Very High Frequency
3513	VIA	Versatile Interface Adapter
3514	VIDS	Visual Information Display System
3515	VII	7 (in Roman numerals)
3516	VIII	8 (in Roman numerals)
3517	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3518	VIP	Very Important Person
3519	VISCII	VIetnamese Standard Code for Information Interchange
3520	VIT	Vellore Institute of Technology
3521	VIVO	Video In Video Out
3522	VJ	Video Jockey
3523	VLAD	Vertical Line Array DIFAR
3524	VLBA	Very Long Baseline Array
3525	VLF	Very Low Frequency
3526	VLIW	Very Long Instruction Word
3527	VLPFC	VentroLateral PreFrontal Cortex
3528	VLPMC	VentroLateral PreMotor Cortex
3529	VLSI	Very-large-scale integration
3530	VM	Vietnam (FIPS 10-4 country code)
3531	VMF	Marine Fighting Squadron of the United States Marine Corps
3532	VMF	Variable Message Format
3533	VMN	VentroMedial Nucleus (neurophysiology)
3534	VN	Vietnam (ISO 3166 digram)
3535	VNIR	Visible and Near InfraRed
3536	VNM	Vietnam (ISO 3166 trigram)
3537	VNS	see entry
3538	VOA	Voice of America
3539	VOIP	Voice Over Internet Protocol
3540	VOLT	Visual OpenType Layout Tool
3541	VON	Victorian Order of Nurses
3542	VOR	Voice of Russia
3543	VOX	Voice Operated oscillator
3544	VPOTUS	Vice President of the United States
3545	VPN	Virtual Private Network
3546	VR	Virtual Reality
3547	VRSG	Virtual Reality Scene Generator
3548	VSHORAD	Very Short Range Air Defence
3549	VSO	Voluntary Services Overseas
3550	VSR	Very Special Relativity
3551	VTC	Video Tele-Conference
3552	VTEC	Variable valve Timing and Electronic lift Control
3553	VTOL	Vertical Take-Off & Landing
3554	VUB	Vrije Universiteit Brussel (Belgian university)
3555	VUT	Vanuatu (ISO 3166 trigram)
3556	VVAF	Vietnam Veterans of America Foundation
3557	VW	Volkswagen
3558	VZ	Verizon Communications (NYSE code)
3559	W3C	World Wide Web Consortium
3560	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3561	WAAF	Women's Auxiliary Air Force (World War II UK)
3562	WACC	Weighted Average Cost of Capital (accounting)
3563	WACS	What-A-Cartoon! Show
3564	WAD	Weapons Alert Designator
3565	WAGGGS	World Association of Girl Guides and Girl Scouts
3566	WAL	see entry
3567	WAN	Wide area network
3568	WAP	Wireless Application Protocol
3569	WAPIMA	What a pain in my ass
3570	WAR	With All Respect
3571	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3572	WAYP	White And Yellow Pages
3573	Wb	Weber
3574	WBC	World Boxing Council
3575	WBE	Work Breakdown Element
3576	WBO	World Boxing Organization
3577	WCBO	World Chess Boxing Organisation
3578	WCBP	World Center for Birds of Prey
3579	WCL	World Confederation of Labour
3580	WCW	World Championship Wrestling
3581	WDIN	Wildlife Disease Information Node
3582	WDWR	Walt Disney World Resort
3583	WEBS	Weapon Effectiveness Battle Simulation
3584	WEC	World Extreme Cagefighting
3585	WEEE	Waste Electrical and Electronic Equipment
3586	WEF	World Economic Forum
3587	WEM	West Edmonton Mall
3588	WEU	Western European Union
3589	WEZ	Weapon Engagement Zone
3590	WF	Wallis and Futuna Islands (ISO 3166 digram)
3591	WFC	Women's Forage Corps (World War II UK)
3592	WFD	Weapon of Focused Destruction
3593	WFF	Wallops Flight Facility
3594	WFI	Water for Injection
3595	WFH	Working from home
3596	WFP	World Food Program
3597	WFZ	Weapons Free Zone
3598	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3599	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3600	WHI	Women's Health Initiative
3601	WHIP	Walks plus hits per inning pitched
3602	WHO	World Health Organisation
3603	WHS	(U.S.) Washington Headquarters Services
3604	WIIFM	What's in it for me?
3605	WIP	Work In Progress
3606	WIPO	World Intellectual Property Organization
3607	WIPP	[Nuclear] Waste Isolation Pilot Plant
3608	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3609	WKYP	Will Keep You Posted
3610	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3611	WLB	Women's Land Brigade (World War II Canada)
3612	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3613	WLOG	Without Loss Of Generality (see WOLOG)
3614	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3615	WMANUS	West Midlands Area National Union of Students
3616	WMD	World Movement for Democracy
3617	WMI	Wildlife Management Institute
3618	WMO	World Meteorological Organization
3619	WNA	World Nuclear Association
3620	WNF	Will Not Fix
3621	WNIT	Women's National Invitation Tournament
3622	WNW	West North-West
3623	WO	Warrant Officer
3624	WOF	Width of Fabric
3625	WOFT	Waste Of Fucking Time
3626	WOFTAM	Waste Of Fucking Time And Money
3627	WOI	Wheels Of Italy
3628	WOM	Write Only Memory
3629	WOS	Wilson Ornithological Society
3630	WOT	Waste Of Time
3631	WP	White Phosphorus (ammunition)
3632	WPB	War Production Board during World War II
3633	WPE	World Pork Expo
3634	WPK	Wider Peacekeeping
3635	WR	Wide Receiver (football)
3636	WRAC	Women's Royal Army Corps (World War II UK)
3637	WRAIR	Walter Reed Army Institute of Research
3638	WRBWWRM	We Best What We Most
3639	WRC	World Rally Championship
3640	WRC	World Religions Conference
3641	WRNG	Warning
3642	WRS	Worldwide Reference System
3643	WRT	NHS Workforce Review Team
3644	WRT	The Linksys routers whose model name start with 'WRT'
3645	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3646	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3647	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3648	WRT	Wireless Ronin Technologies (digital signage)
3649	WRT	World Rally Team
3650	WRT	Writer Response Theory
3651	WSC	Weapon System Catalogue
3652	WSDL	Web Services Description Language
3653	WSJ	(The) Wall Street Journal
3654	WSROC	Western Sydney Regional Organisation of Councils
3655	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3656	WSTC	Women Signallers Territorial Corps (World War II UK)
3657	WSW	West South-West
3658	WTC	World Trade Center
3659	WTF	What the fuck?; also What a Terrible Failure (android)
3660	WTFH	What The Fucking Hell
3661	WTH	What the Hell
3662	WTO	World Trade Organization
3663	WUBU2	What you been up to
3664	WV	West Virginia (postal symbol)
3665	WVA	World Veterinary Association
3666	WVIAC	West Virginia Intercollegiate Athletic Conference
3667	WVR	Women's Volunteer Reserve (World War II UK)
3668	WVSC	Women's Volunteer Service Corps (World War II Canada)
3669	WVU	West Virginia University
3670	WW	see entry
3671	WWE	World Wrestling Entertainment
3672	WWI	World War I
3673	WWII	World War II
3674	WWIII	World War III
3675	WWJD	What would Jesus do?
3676	WWS	Wheaton Warrenville South High School
3677	WWWF	World Wide Wrestling Federation
3678	WXO	Weather [Executive] Officer
3679	WY	Wyoming (postal symbol)
3680	WZ	Swaziland (FIPS 10-4 country code)
3681	XBML	eXtended Business Modelling Language
3682	XC	Ninety (in Roman numerals)
3683	XCBL	XML Common Business Library
3684	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3685	Xe	Xenon
3686	XFA	XML Forms Architecture
3687	XFC	Xtreme Fighting Championships
3688	XFD	Fighter aircraft made by Douglas
3689	Xfe	X File Explorer
3690	XFF	X-Forwarded-For
3691	XFG	Exfoliation glaucoma
3692	XFR	Automobile made by Jaguar
3693	XFT	X FreeType interface library
3694	XG	Automobile made by Hyundai
3695	XGA	Extended Graphics Array
3696	XGP	Extreme Game Player
3697	XHTML	eXtensible Hypertext Markup Language
3698	XI	Eleven (in Roman numerals)
3699	XII	Twelve (in Roman numerals)
3700	XIII	Thirteen (in Roman numerals)
3701	XIV	Fourteen (in Roman numerals)
3702	XIX	Nineteen (in Roman numerals)
3703	XJS	Automobile made by Jaguar
3704	XKB	X keyboard extension
3705	XKE	Automobile made by Jaguar
3706	XKR	Automobile made by Jaguar
3707	XML	eXtensible Markup Language
3708	XMSF	eXtensible Modelling and Simulation Framework
3709	XNA	X-No-Archive,Xeno Nucleic Acid
3710	XNC	X Northern Captain
3711	XNU	X is Not Unix
3712	XP	eXperience Point (role-playing games)
3713	XQJ	XQuery API for Java™
3714	XRAY	X-Ray
3715	XRML	eXtensible Rights Markup Language
3716	XS	Xiaolin Showdown
3717	XSL	eXtensible Style Language
3718	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3719	XUL	XML User Interface Language
3720	XV	Fifteen (in Roman numerals)
3721	XVI	Sixteen (in Roman numerals)
3722	XVII	Seventeen (in Roman numerals)
3723	XVIII	Eighteen (in Roman numerals)
3724	XWF	Xcitement Wrestling Federation
3725	XX	Twenty (in Roman numerals)
3726	Xyl	Xylobium
3727	XZN	Triple square screw driver
3728	y	Yocto-
3729	Y2K	Year Two Thousand
3730	yA	Yoctoampere
3731	Ya	Yottayear
3732	YaBPr	Yet another Brother Pat rant
3733	YABSLAG	Yet another boy singing like a girl
3734	YAC	Youth-Adult Committee
3735	YAFLA	Yet Another Five Letter Abbreviation
3736	YAP	Young Aspiring Professional
3737	YB	Youcef Benzouada (Southern Algerian name)
3738	Yb	Ytterbium
3739	yC	Yoctocoulomb
3740	YC	Yottacoulomb
3741	YDS	Yosemite Decimal System (climbing)
3742	YE	Yemen (ISO 3166 digram)
3743	YEM	Yemen (ISO 3166 trigram)
3744	yF	Yoctofarad
3745	YF	Yottafarad
3746	yg	Yoctogram
3747	Yg	Yottagram
3748	YGCO	Yamaneko Group of Comet Observers
3749	Ygo	Yu-Gi-Oh!
3750	yH	Yoctohenry
3751	YH	Yottahenry
3752	YHBT	You Have Been Trolled
3753	YHII	You Have It Inside
3754	YHS	Ya Hoor sur!
3755	Yi	Yobi
3756	Yippie	Youth International Party + suffix
3757	yJ	Yoctojoule
3758	YJ	Yottajoule
3759	yK	Yoctokelvin
3760	YK	Yottakelvin
3761	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3762	yL	Yoctolitre
3763	YL	Yottalitre
3764	ym	Yoctometre
3765	Ym	Yottametre
3766	YMMD	You Make My Day
3767	yN	Yoctonewton
3768	YN	Yottanewton
3769	YOLO	You Only Live Once
3770	YPA	Yards per Pass Attempt (football statistic)
3771	YPIO	Your Problem Is Obvious
3772	YPO	Young Presidents' Organization
3773	ys	Yoctosecond
3774	yS	Yoctosiemens
3775	Ys	Yottasecond
3776	YS	Yottasiemens
3777	YSI	Young Scots for Independence
3778	yT	Yoctotesla
3779	YTD	Year-To-Date
3780	YTM	Yield to Maturity
3781	YTS	Youth Training Scheme
3782	YTT	Yoshi Topsy-Turvy
3783	Yuppie	Young Urban Professional + suffix
3784	yV	Yoctovolt
3785	YV	Yottavolt
3786	yW	Yoctowatt
3787	YW	Yottawatt
3788	YYH	YuYu Hakusho
3789	z	Zepto
3790	Z	Zetta
3791	zA	Zeptoampere
3792	ZAF	South Africa (ISO 3166 trigram)
3793	ZAMS	Zero age main sequence
3794	ZAS	Zylinder Abschaltung System
3795	ZBT	Zero-Balance Transfer (accounting)
3796	zC	Zeptocoulomb
3797	ZC	Zettacoulomb
3798	ZCM	(n) ZENworks Configuration Management
3799	ZCMK	Zone Control Master Key
3800	ZCU	Zimbabwe Cricket Union
3801	\a	Atto-