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	AFAM	Associazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
165	AFATDS	Advanced Field Artillery Tactical Data System
166	AFCEA	Armed Forces Communications and Electronics Association
167	AFDB	African Development Bank
168	AFES	Automatic Fire Extinguishing System
169	AFG	Afghanistan (ISO 3166 trigram)
170	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171	AFIST	Abrams Full Crew Interactive Skills Trainer
172	AFJ	April Fool's Joke
173	AFK	Away From Keyboard (Internet chat abbreviation)
174	AFLAC	American Family Life Assurance Company of Columbus
175	AFO	Association of Field Ornithologists
176	AFOSR	U.S. Air Force Office of Scientific Research
177	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
178	AFQT	Armed Forces Qualification Test
179	AFRC	Air Force Reserve Command
180	AFRL	Air Force Research Laboratory
181	AFROTC	Air Force Reserve Officer Training Corps
182	AFRTS	Armed Forces Radio and Television Service
183	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
184	AFSCN	U.S. Air Force Satellite Control Network
185	AFSPC	Air Force Space Command
186	AFT	American Farmland Trust
187	AFV	armoured fighting vehicle
188	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
189	ag	Attogram
190	Ag	Silver (Latin argentum)
191	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
192	AGARD	Advisory Group for Aerospace Research and Development
193	AGARDograph	Advanced Guidance for Alliance Research and Development publication
194	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
195	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
196	AGC	Adjutant General's Corps (British Army)
197	AGDC	Australian Game Developers' Conference
198	AGI	Auxiliary Group Intelligence
199	AGM	Annual General Meeting
200	AGN	Active Galactic Nucleus
201	AGO	Angola (ISO 3166 trigram)
202	AGP	Accelerated Graphics Port
203	AGRICOLA	Agriculture Online Access
204	AGS	Alaska Ground Station (LandSat)
205	AGTS	Advanced Gunnery Training System
206	AGU	American Geophysical Union
207	AGW	Autonomous Guided Weapon
208	Ah	Ampere-hour
209	AH	Attack Helicopter
210	aH	Attohenry
211	AHA	American Heart Association
212	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
213	AHEC	Australian Health Ethics Committee
214	AHPCRC	Army High Performance Computing Research Center
215	AHQ	Air Headquarters
216	AHRQ	Agency for Healthcare Research and Quality
217	AHS	American Housing Survey
218	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
219	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
220	AIAA	American Institute of Aeronautics and Astronautics
221	AIC	African Independent Church,Animal Identification Coordinator
222	AICD	Australian Institute of Company Directors
223	AICMFP	And I Claim My Five Pounds
224	AID	U.S. Agency for International Development
225	AIDS	Acquired Immune Deficiency Syndrome
226	AIM	Australian Institute of Management
227	AIMP	Aurora Incremental Modernization Project
228	AIPAC	American Israel Public Affairs Committee
229	AIR	Aircraft Inventory Record
230	AIRFA	American Indian Religious Freedom Act
231	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
232	AIS	Australian Institute of Sport,Automatic Identification System
233	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
234	aJ	Attojoule
235	AJ	Azerbaijan (FIPS 10-4 country code)
236	Ajax	Asynchronous JavaScript And XML
237	AJD	Astronomical Julian day
238	AJP	Allied Joint Publication
239	AJPW	All Japan Pro Wrestling
240	AK	Alaska (postal symbol)
241	aK	Attokelvin
242	AKA	Above knee amputation (orthopaedic usage)
243	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
244	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
245	AKST	Alaska Standard Time (UTC−9 hours)
246	AL	Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram),Anno Lucis (Latin,'Year of Light',in Masonic tradition,most often seen on plaques bearing the founding dates of buildings,in years AD and years AL)
247	Al	Aluminium
248	aL	Attolitre
249	ALA	Åland Islands (ISO 3166 trigram)
250	ALAP	As Long/Late As Possible
251	ALARM	Air-Launched Anti-Radar Missile
252	ALB	Albania (ISO 3166 trigram)
253	ALD	Accounting Line Designator (nuclear weapon targeting)
254	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
255	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
256	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
257	ALGOL	ALGOrithmic Language
258	ALPA	Air Line Pilots Association
259	ALS	Amyotrophic Lateral Sclerosis
260	ALSHS	Abraham Low Self-Help Systems
261	ALSP	Aggregate Level Simulation Protocol
262	ALTE	Association of Language Testers in Europe
263	Am	Americium
264	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
265	AM1	Airman 1st class
266	AMCB	U.S. Army/Marine Corps Board
267	AMFOM	Advanced Missile Fly Out Model
268	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
269	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
270	AML	Acute Myeloid Leukaemia
271	AMLCD	Active Matrix Liquid Crystal Display
272	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
273	AMO	Atlantic Multidecadal Oscillation
274	AMOLED	Active-matrix organic light-emitting diode
275	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
276	AMP	Adenosine MonoPhosphate,Automated Mission Planner
277	AMRAAM	Advanced Medium-Range Air-to-Air Missile
278	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
279	AMS	Agriculture Marketing Service,American Mathematical Society
280	AMSAA	U.S. Army Materiel Systems Analysis Activity
281	AMSO	U.S. Army Model and Simulation Office
282	AMSU	Advanced Microwave Sounding Unit
283	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
284	AN	Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
285	aN	Attonewton
286	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
287	ANC	African National Congress
288	AND	Andorra (ISO 3166 trigram)
289	ANFO	Ammonium nitrate/fuel oil (explosive)
290	ANGLiCo	Air/Naval Gunfire Liaison Company
291	ANL	Argonne National Laboratory
292	ANM	Acoustic Noise Monitor
293	ANOVA	ANalysis Of VAriance
294	ANS	Applied and Natural Sciences
295	ANSI	American National Standards Institute
296	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
297	ANTM	America's Next Top Model
298	ANTY	Acronyms,No Thank You
299	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
300	ANZ	Australia and New Zealand Banking Group
301	ANZAC	Australian and New Zealand Army Corps
302	AO	Angola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
303	AOC	Air Operations Centre,Air Officer Commanding
304	AOD	Adrenalin O.D. (punk rock band)
305	AOI	Angle Of Incidence (Arab Organization for Industrialization)
306	AOL	America OnLine
307	AOR	Area of Responsibility
308	AOSTH	Adventures of Sonic the Hedgehog
309	AOTS	Attack of the Show!
310	AOU	American Ornithologists' Union
311	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
312	APB	All Points Bulletin (police jargon)
313	APEC	Asia Pacific Economic Cooperation
314	APEDS	AMSAA Performance Estimates Data System
315	APEX	Applied Physics Express
316	APHA	American Public Health Association
317	APHIS	Animal and Plant Health Inspection Service
318	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
319	APOD	Aerial Port (Airport) Of Debarkation
320	APOE	Aerial Port (Airport) Of Embarkation
321	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
322	APP	Allied Procedural Publication
323	APR	Annual Percentage Rate
324	AQIM	Al-Qaeda in the Islamic Maghreb
325	Ar	Argon
326	ARAG	Advanced Research and Assessment Group
327	ARB	Administrative Review Board
328	ARBA	Army Review Boards Agency
329	ARCA	Automobile Racing Club of America
330	ARCENT	United States Army Central Command
331	ARDA	Advanced Research and Development Activity (became DTO 2006)
332	ARF	ASEAN Regional Forum
333	ARG	Argentina (ISO 3166 trigram)
334	ARH	Armed Reconnaissance Helicopter
335	ARNet	Acquisition Reform Network
336	ARP	Applied Research Programme
337	ARPA	Advanced Research Projects Agency
338	ARRC	ACE Rapid Reaction Corps
339	ARRF	Allied Rapid Reaction Force
340	ARRL	American Radio Relay League
341	ARSC	Arctic Region Supercomputing Center
342	ARSPACE	U.S. Army Space Command
343	ARTCC	Air Route Traffic Control Center
344	AS	ActionScript
345	As	Arsenic
346	aS	Attosiemens
347	ASAP	As Soon As Possible
348	ASBO	Anti-Social Behaviour Order
349	ASCII	American Standard Code for Information Interchange
350	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
351	ASEAN	Association of Southeast Asian Nations
352	ASFAR	Americans for a Society Free of Age Restrictions
353	ASG	Area Support Group
354	ASN	Associate of Science in Nursing
355	ASPI	Australian Strategic Policy Institute
356	ASRAAM	Advanced Short-Range Air-to-Air Missile
357	ASSC	Association for the Scientific Study of Consciousness
358	AST	Atlantic Standard Time (UTC−4 hours)
359	ASTIA	Armed Services Technical Information Agency
360	ASTM	American Society for Testing and Materials
361	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
362	ASUW	AntiSUrface Warfare
363	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
364	ASW	AntiSubmarine Warfare
365	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
366	ASX	Advanced Stream Redirector,Australian Securities Exchange
367	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
368	At	Astatine
369	aT	Attotesla
370	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
371	ATAC	Air Transportable Acoustic Communications
372	ATACMS	Army TACtical Missile System
373	ATAPI	Advanced Technology Attachment Packet Interface
374	ATAS	Air-To-Air Stinger (missile)
375	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
376	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
377	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
378	ATCCIS	Army Tactical Command and Control Information System
379	ATESS	Aerospace and Telecommunications Engineering Support Squadron
380	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
381	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
382	ATGM	Anti-Tank Guided Missile
383	ATGW	Anti-Tank Guided Weapon
384	ATK	Attack
385	ATL	Atlanta,Georgia,the largest city and capital of Georgia
386	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
387	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
388	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
389	ATO	Air Tasking Order,Australian Taxation Office
390	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
391	ATSD	(U.S.) Assistant Secretary of Defense
392	ATSDR	Agency for Toxic Substances and Disease Registry
393	ATV	All-Terrain Vehicle
394	ATWA	Air,Trees,Water,Animals
395	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
396	Au	Gold (Latin Aurum)
397	AUS	Australia (ISO 3166 trigram)
398	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
399	Auslan	Australian Sign Language
400	AUT	Austria (ISO 3166 trigram)
401	AUTL	Army Universal Task List
402	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
403	Av	Aperture value (photographic mode)
404	aV	Attovolt
405	AVA	American Viticultural Area
406	AVB	Audio Video Bridging
407	AVDLR	Aviation Depot Level Repair
408	AVGP	Armoured Vehicle, General Purpose
409	AVIM	Aviation Intermediate Maintenance
410	AVLB	Armoured Vehicle Launched Body
411	AVM	Air Vice-Marshal, Arteriovenous malformation
412	AVO	Apprehended Violence Order
413	AVP	Arubaanse Volkspartij
414	AVP	Association of Volleyball Professionals
415	AVRE	Armoured Vehicle Royal Engineers
416	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
417	AVUM	Aviation Unit Maintenance
418	AVVO	Acute Vaginal Venereal Outbreak
419	AW	Aruba (ISO 3166 digram)
420	aW	Attowatt
421	AWA	American Wrestling Association
422	AWC	Air Warfare Centre
423	AWD	All Wheel Drive
424	AWE	Advanced Warfighting Experiment
425	AWP	Awaiting Parts (SM&R code)
426	AWSIM	Air Warfare SIMulation
427	AWST	Australian Western Standard Time
428	AWW	Above Water Warfare
429	AX	Åland Islands (ISO 3166 digram)
430	AXP	Ambulance eXchange Point
431	AY	Antarctica (FIPS 10-4 territory code)
432	AYBABTU	All Your Base Are Belong To Us
433	AYU	As Yet Unknown
434	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
435	AZE	Azerbaijan (ISO 3166 trigram)
436	AZUR	Actions en zone urbaine (French for: Urban Operations)
437	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]
438	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
439	BBB	Better Business Bureau,Blood-brain barrier
440	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
441	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
442	BBN	Bolt,Beranek and Newman
443	BBQ	Barbecue
444	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)
445	BBYO	B'nai B'rith Youth Organization
446	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
447	BCA	Bachelor of Computer Application,Black Coaches & Administrators
448	BCC	Blind Carbon Copy
449	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
450	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
451	BEL	Belgium (ISO 3166 trigram)
452	BEN	Benin (ISO 3166 trigram)
453	BEO	Banquet Event Order
454	BERC	Business Environmental Resource Center
455	BER	Bit Error Rate
456	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
457	BHR	Bahrain (ISO 3166 trigram)
458	BNF	Backus-Naur Form (computing), British National Formulary
459	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
460	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
461	BNS	Bank of Nova Scotia
462	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
463	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
464	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
465	BoAML	Bank of America Merrill Lynch
466	BOC	British Orthodontic Society, British Oxygen Company
467	BÖC	Blue Öyster Cult
468	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
469	BOFH	Bastard Operator From Hell
470	BOGA	Bend Over and Grab Ankles
471	BOGOF	Buy One,Get One Free
472	BOGs	Bunch of Guys
473	BOI	Balance Of Investment,Basis Of Issue
474	BOL	Bolivia (ISO 3166 trigram)
475	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
476	BOPD	Barrel of Oil Per Day
477	BOS	Battlefield Operating System
478	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
479	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
480	BPV	Battlefield Planning Visualization,Bovine papillomavirus
481	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)
482	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
483	BRA	Brazil (ISO 3166 trigram)
484	BRAG	Bicycle Ride Across Georgia
485	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
486	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
487	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
488	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
489	BSoD	Blue Screen of Death (distinct from BSD)
490	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
491	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
492	BSW	British Standard Whitworth (screw thread)
493	BSX	Bendigo Stock Exchange
494	BTO	Built To Order
495	BTP	British Transport Police
496	BTU	British Thermal Unit
497	BTW	By The Way
498	BUAV	British Union for the Abolition of Vivisection
499	BUNO	Bureau Number (aircraft serial number)
500	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
501	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
502	BVD	Bradley,Voorhees & Day (underwear manufacturer)
503	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
504	BW	Bring Wedges (ISO digram)
505	BW	Botswana (ISO 3166 digram)
506	BWA	Botswana (ISO 3166 trigram)
507	BWARS	Bees,Wasps & Ants Recording Society
508	BWC	Biological and Toxin Weapons Convention
509	BWR	Boiling-Water Reactor
510	BX	Base eXchange
511	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
512	BYOC	Bring Your Own Computer (play on BYOB)
513	BYOF	Bring Your Own Flask
514	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
515	BYU	Brigham Young University
516	BZ	Belize (ISO 3166 digram)
517	BZP	Benzylpiperazine
518	C	Carbon, Coulomb, One Hundred (in Roman numerals)
519	c	Centi
520	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
521	c2c	the British rail company formerly known as LTS Rail
522	Ca	Calcium
523	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
524	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
525	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
526	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
527	CACM	Central American Common Market
528	CACM	Communications of the ACM
529	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
530	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
531	CADPAT	CAnadian Disruptive PATtern
532	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
533	CAEn	Close Action Engagement (constructive simulation)
534	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
535	CAFAD	Combined Arms For Air Defence
536	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
537	CAFE	Corporate Average Fuel Economy standard
538	CAI	Computer Assisted Instruction
539	CAIR	Council on American-Islamic Relations
540	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
541	CALL	Center for Army Lessons Learned
542	CALM	Communications,Air-interface,Long and Medium range
543	CalPERS	California Public Employees' Retirement System
544	Caltrans	California Department of Transpotation
545	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
546	CAMRA	CAMpaign for Real Ale
547	CAN	Canada (ISO 3166 trigram)
548	CANDU	CANada Deuterium Uranium (nuclear reactor design)
549	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
550	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
551	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)
552	CARMONETTE	Computerized Monte Carlo Simulation
553	CARP	Computed Air Release Point
554	CART	Championship Auto Racing Teams (now defunct)
555	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
556	CASA	Civil Aviation Safety Authority
557	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
558	CASS	Command Activated Sonobuoy System
559	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
560	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
561	CAT	Community Acceptance Testing
562	CATK	Counterattack
563	CATS	Computer Active Technology Suspension
564	CATT	Combined Arms Tactical Trainer
565	CAV	Cavalry
566	CAW	Canadian Auto Workers (trade union)
567	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
568	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
569	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
570	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
571	CBLA	Comparative bullet lead analysis
572	CBM	Canadian Baptist Ministries
573	CBM	Commodore Business Machines
574	CBML	Coalition Battle Management Language
575	CBN	CardsApp Brand Number
576	CBOL	Consortium for the Barcode of Life
577	CBOT	Chicago Board of Trade
578	CBR	Case-Based Reasoning
579	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
580	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
581	CBS	Columbia Broadcasting System,Corps Battle Simulation
582	CBUS	Columbus,Ohio
583	CC	carbon copy
584	CCA	Counter Command Activity
585	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
586	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
587	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
588	CCF	Cartoon Cartoon Fridays
589	CCG	Canadian Coast Guard,Collectible Card Game
590	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
591	CCGH	Canadian Coast Guard Hovercraft
592	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
593	CCH	Computer-Controlled Hostile
594	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)
595	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
596	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
597	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
598	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)
599	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
600	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
601	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
602	CCOP	Coalition Common Operating/Operational Picture
603	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
604	CCPA	Consumer Credit Protection Act
605	CCR	Creedence Clearwater Revival
606	CCRAp	Canadian Conservative Reform Alliance party
607	CCRP	Command and Control Research Program
608	CCRTS	Command and Control Research and Technology Symposium
609	CCSCS	Consultative Committee for Space Data Systems
610	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
611	CCSK	Cyclic Code Shift Keying
612	CCT	Current Commitments Team
613	Cd	Cadmium
614	cd	Candela
615	CD	Compact Disc
616	CD1	Cluster of Differentiation 1 (a small gene family)
617	CDA	UK Centre for Defence Analysis
618	CDD	Capabilities Development Document
619	CDE	Chemical Defence Equipment
620	CDipAF	Certified Diploma in Accounting and Finance
621	CDL	Commercial driver's license
622	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
623	CDMA	Code Division Multiple Access
624	CDMSII	Cryogenic Dark Matter Search II
625	Cdr	Commander
626	CDT	Central Daylight Time (UTC−5 hours)
627	Cdt	Commandant
628	Ce	Cerium
629	CE	Christian/Common Era
630	CEA	Campaign Effectiveness Analysis
631	CECOM	U.S. Army Communications and Electronics Command
632	CEI	Competitive Enterprise Institute
633	CENTCOM	United States Central Command
634	CENTO	Central Treaty Organization (Baghdad Pact)
635	CEO	Chief Executive Officer
636	CEP	Circular Error Probable
637	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
638	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
639	CERT	Computer Emergency Response Team
640	CESS	Centre for Earth Science Studies (India)
641	CEST	Central European Summer Time
642	CET	Central European Time
643	CEWC	Council for Education in World Citizenship
644	Cf	Californium
645	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
646	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
647	CFAR	Christine's,Federal Acquisition Regulation
648	CFC	ChloroFluoroCarbon,Canadian Fish Company
649	CFES	Continuous Flow Electrophoresis System
650	CFFZ	Call For Fire Zone
651	CFG	Context-free grammar,Control flow graph
652	CFHT	Canada-France-Hawaii Telescope
653	CFI	Center for Inquiry (CSICOP)
654	CFL	Canadian Football League,Co-ordinated Fire Line
655	CFLCC	Coalition Forces Land Component Command
656	CFM	Certified Facilities Manager
657	CFO	Chief Financial Officer
658	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
659	CFRP	Carbon fibre reinforced plastic
660	CFS	Chronic Fatigue Syndrome
661	CFSP	Common Foreign and Security Policy
662	CFU	Colony Forming Unit in Microbiology
663	CFV	Cavalry Fighting Vehicle
664	CFZ	Critical Friendly Zone
665	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
666	CGH	Comparative Genomic Hybridisation
667	CGIG	Cross-Government Implementation Group
668	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
669	CGS	Chief of the General Staff
670	CGT	Capital Gains Tax
671	ch	ch(L) is used to denote the Chern character of a line bundle
672	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
673	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
674	CHAOS	Cambridge Heart Anti-Oxidant Study
675	CHAPS	Clearing House Automated Payment System
676	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
677	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
678	CHI	Columbia Helicopters,Inc
679	CHiP	California Highway Patrol
680	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
681	CHL	Chile (ISO 3166 trigram)
682	CHLA	Core Historical Literature of Agriculture
683	CHN	China (ISO 3166 trigram)
684	CHOGM	Commonwealth Heads of Government Meeting
685	CHPSO	California Hospital Patient Safety Organization
686	CHRS	Canadian Heart Rhythm Society
687	CHT	Certified Hand Therapist
688	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
689	Ci	Curie
690	CIA	Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
691	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
692	CIB	Complete In Box (Internet auction/trading listings)
693	CIBC	Canadian Imperial Bank of Commerce
694	CID	Certified Interior Designer
695	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
696	CINC	Commander in Chief
697	CINEOS	Campo Imperatore Near-Earth Object Survey
698	CIPE	(European) Centre for International Political Economy
699	CIR	(Commander's) Critical Information Requirements
700	CIR	Corotating Interaction Region
701	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
702	CISA	(U.S.) C4I Integration Support Activity
703	CISB	Complete In Sealed Box (Internet auction/trading listings)
704	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
705	CISSP	Certified Information Systems Security Professional
706	CIV	Côte d'Ivoire (ISO 3166 trigram)
707	CIVPOP	Civilian Population
708	CIWS	Close-In Weapon System
709	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
710	CJC	Canadian Jewish Congress,Cold Junction Compensation
711	CJCS	Chairman of the Joint Chiefs of Staff
712	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
713	CJO	Chief of Joint Operations
714	CJTF	Combined Joint Task Force
715	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
716	CKA	commonly known as, Canada Kicks Ass
717	CKND	Codename: Kids Next Door
718	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
719	Cl	Chlorine
720	CLA	Clutterers Anonymous
721	CLEC	Competitive Local Exchange Carrier
722	CLEMARS	California Law Enforcement Mutual Aid Radio System
723	CLIC	Compact LInear Collider
724	CLO	Cornell Lab of Ornithology
725	CLOS	Command to Line-Of-Sight (missile control system)
726	CLPFC	CentroLateral PreFrontal Cortex
727	CLRP	College Loan Repayment Program
728	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
729	Cm	Curium
730	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
731	CMHC	Canada Mortgage and Housing Corporation
732	CMIIAW	Correct me if I am wrong
733	CMIS	Common management information service
734	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
735	CMM	Capability Maturity Model
736	CMMC	Corps Materiel Management Centre
737	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
738	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
739	CMP	Common [Operating/Operational] Maritime Picture
740	CMPD	Charlotte Mecklenburg Police Department
741	CMPD	Chronic Myeloproliferative Disease
742	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
743	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
744	CMT	Country Music Television
745	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
746	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)
747	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
748	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
749	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
750	CNBC	Consumer News and Business Channel
751	CND	Campaign for Nuclear Disarmament,Computer Network Defence
752	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
753	CNF	Cost and Freight
754	CNI	Clinical Nursing Intern
755	CNI	Communications,Navigation and Identification
756	CNN	Cable News Network,Cellular Nonlinear Network
757	CNV	Copy-Number Variable (genetics)
758	Co	Cobalt
759	COB	Close Of Business [day]
760	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
761	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
762	CoDA	Co-Dependents Anonymous
763	COGENT	Cognitive Objects within a Graphical EnviroNmenT
764	COIL	Chemical Oxygen Iodine Laser
765	COK	Cook Islands (ISO 3166 trigram)
766	COL	Colombia (ISO 3166 trigram)
767	COLA	Cost Of Living Adjustment
768	CONAD	U.S. Continental Air Defense Command
769	CONUS	Continental United States
770	COO	Chief Operating Officer
771	COPE	U.K. Committee On Publication Ethics
772	COPUS	U.K. Committee on the Public Understanding of Science
773	CORD	Common Operational Requirements Document
774	CORE	Consortium for Oceanographic Research and Education
775	COS	Cooper Ornithological Society
776	COSER	COoperative SERvice
777	CoT	Car of Tomorrow (former NASCAR race car design)
778	COTS	Commercial Off The Shelf
779	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
780	CPA	Certified Public Accountant
781	CPCU	Certified Property Casualty Underwriter
782	CPD	Capabilities Production Document
783	CPE	Certificate of Proficiency in English
784	CPE	Certified Professional Ergonomist
785	CPF	Calibration Parameter File,Canadian Patrol Frigate
786	CPG	Clinical Practice Guideline
787	CPIM	Certification on Production and Inventory Management
788	CPIR	Computationally-Private Information Retrieval
789	CPON	Certified Pediatric Oncology Nurse
790	CPPCC	Chinese People's Political Consultative Conference
791	CPR	Canadian Pacific Railway
792	CPR	Cardiopulmonary resuscitation
793	CPSM	Continuous Phase Shift Modulation
794	CPSU	Communist Party of the Soviet Union
795	CPT	Contingency Planning Team
796	CPU	Contract Postal Unit
797	CPV	Cape Verde (ISO 3166 trigram)
798	CPX	Command Post eXercise
799	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
800	Cr	Chromium
801	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
802	CRAM	Combined Radiometric Correction Model
803	CRD	Capstone Requirements Document
804	CREB	Cyclic AMP-response Element Binding (protein)
805	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
806	CREN	Christian Real Estate Network Real Estate Association
807	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
808	CRIPL	Consolidated Remain-In-Place List
809	CRM	Cardiac Rhythm Management,Customer Relationship Management
810	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
811	CRP	Committee for the Re-Election of the President,Control and Reporting Post
812	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
813	CRTC	Canadian Radio-television and Telecommunications Commission
814	Cs	Caesium
815	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
816	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
817	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
818	CSG	Corps Support Group
819	CSI	see entry
820	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
821	CSIP	Commercial Stable Image Platform (AMD)
822	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
823	CSL	U.K. Central Science Laboratory
824	CSPI	Center for Science in the Public Interest
825	CSR	Control Supply Rate
826	CSR	Corporate Social Responsibility
827	CSRC	Conflict Studies Research Centre
828	CSRF	Cross-Site Request Forgery
829	CST	Central Standard Time (UTC−6 hours)
830	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)
831	CTBT	Comprehensive [Nuclear] Test Ban Treaty
832	CTDB	Compact Terrain Data Base (file format)
833	CTGF	connective tissue growth factor
834	CTI	Co-operative Target Identification
835	CTIL	Critical Tracked Items List
836	CTIS	Central Tire Inflation System
837	CTMS	Clinical Trial Management System
838	CTSS	Compatible Time-Sharing System
839	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
840	CTVT	Canine Transmissible Venereal Tumour
841	Cu	Copper (Latin Cuprum)
842	CUB	Cuba (ISO 3166 trigram)
843	CUCV	Commercial Utility Cargo Vehicle
844	CUPS	Common Unix Printing System
845	CUPW	Canadian Union of Postal Workers
846	CUREA	Consortium for Undergraduate Research and Education in Astronomy
847	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
848	CUW	Curaçao (ISO 3166 trigram)
849	CV	curriculum vitae (résumé)
850	CVLL	Crypto Variable Logic Label
851	CVSD	Continuous Variable Slope Delta (modulation)
852	CVT	Continuously Variable Transmission
853	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
854	CWC	Chemical Weapons Convention
855	CWRU	Case Western Reserve University
856	CWS	Canadian Wildlife Service
857	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
858	CXR	Christmas Island (ISO 3166 trigram)
859	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
860	CYM	Cayman Islands (ISO 3166 trigram)
861	CZE	Czech Republic (ISO 3166 trigram)
862	CZF	(Christian Zombie Fan)
863	CZMA	(US) Coastal Zone Management Act
864	d	Deci
865	D	Deuterium
866	DAFIF	Digital Aeronautical Flight Information File
867	DAK	Disney's Animal Kingdom
868	DAO	Division Ammunition Officer
869	DARE	Drug Abuse Resistance Education
870	DARO	(U.S.) Defense Airborne Reconnaissance Office
871	DARPA	U.S. Defense Advanced Research Projects Agency
872	DAS	Defensive Aids Suite
873	DASD	(U.S.) Deputy Assistant Secretary of Defense
874	DASL	Datapoint's Advanced Systems Language
875	DAU	(U.S.) Defense Acquisition University
876	DAWN	(U.S.) Drug Abuse Warning Network
877	dB	Decibel
878	DB	Deutsche Bahn
879	Db	Dubnium
880	DBA	De Bellis Antiquitatis (miniature wargaming rules)
881	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
882	DBDO	Desert BDO
883	DBE	Dame Commander of the Order of the British Empire
884	DBF	Detection By Fire (weapon launch signature)
885	DBR	De Bellis Renationis (miniature wargaming rules)
886	DBRA	Davis-Bacon Related Acts
887	DBS	Direct Broadcast Services (television)
888	DCAA	(U.S.) Defense Contract Audit Agency
889	DCAS	Devon and Cornwall Archery Society
890	DCC	Dallas Christian College
891	DCD	[Organ] Donation after Cardiac Death
892	DCE	Data Communication Equipment
893	DCFC	Death Cab for Cutie
894	DCL	Disney Cruise Line
895	DCN	Deacon
896	DCOM	Disney Channel Original Movie
897	DCSOPS	Deputy Chief of Staff for Operations and plans
898	DCW	Digital Chart of the World
899	DCYSC	Discovery Channel Young Scientist Challenge
900	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
901	DDA	Deputy District Attorney
902	DDN	U.S. Defense Data Network
903	DDS	Doctor of Dental Surgery
904	DEA	Drug Enforcement Administration
905	DEA	Drug Enforcement Agency
906	DeCA	(U.S.) Defense Commissary Agency
907	DEFCON	Defence readiness condition
908	DELT	Dual Ended Line Test (ing)
909	DEPSECDEF	(U.S.) Deputy Secretary of Defense
910	DERA	British Defence Evaluation and Research Agency (1995-2001)
911	DES	Deep Ecliptic Survey
912	DEU	Germany (ISO 3166 trigram)
913	DFAS	(U.S.) Defense Finance and Accounting Service
914	DFCB	Data Format Control Book
915	DfID	UK Department for International Development
916	DFM	Discrete Field Model see Superluminal motion
917	DFM	Dynamic Flowgraph Methodology
918	DFSP	Dermatofibrosarcoma protuberans
919	DfT	UK Department for Transport
920	DGPS	Differential GPS
921	DGZ	Desired Ground Zero
922	DHA	DocosaHexaenoic Acid
923	DHHS	(U.S.) Department of Health and Human Services
924	DHRA	(U.S.) DoD Human Resources Activity
925	DHS	U.S. Department of Homeland Security
926	DHSS	UK Department of Health and Social Security
927	DHTFYSS	U.S. Don't Have Time For You Silly S****
928	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
929	DIA	U.S. Defense Intelligence Agency
930	DIAC	Department of Immigration and Citizenship (Australia) [1]
931	DiC	Design Island Centre (computing usually used in a teaching situation)
932	DICASS	DIrectional Command Activated Sonobuoy System
933	DIFAR	DIrectional Frequency Analysis and Recording
934	DIME	Dense Inert Metal Explosive
935	DIP	Dual In-line Package (electronics)
936	DIPS	Defense independent pitching statistics
937	DIR	Defence Industrial Research
938	DISCOM	Division Support Command
939	DISE	Deployable Intelligence Support Element
940	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
941	DITY	Do-It-Yourself
942	DIVAD	Division Air Defence
943	DIY	Do It Yourself
944	DJI	Djibouti (ISO 3166 trigram)
945	DK	Denmark (ISO 3166 digram)
946	DL	Dexter's Laboratory
947	DLIC	Detachment Left-In-Contact
948	DLIR	Depot-Level Inspection and Repair
949	DLPMC	DorsoLateral PreMotor Cortex
950	DLRP	Data Link Reference Point
951	DLS	Deep Lens Survey
952	DLSA	(U.S.) Defense Legal Services Agency
953	DLSc	Diploma in Library Science
954	DLTBGYD	Don't let the bastards grind you down
955	DMC	(U.S.) Defense Management Council
956	DMCA	Digital Millennium Copyright Act
957	DMM	Digital Multimeter
958	DMOC	Distributed Mission Operations Centre
959	DMPA	(U.S.) Defense Medical Programs Activity
960	DMPFC	DorsoMedial PreFrontal Cortex
961	DMPK	Drug Metabolism and Pharmacokinetics
962	DMRB	Design Manual for Roads and Bridges
963	DMS	U.S. Defense Message System
964	DMSP	U.S. Defense Meteorological Satellite Program
965	DMT	Dimethyltryptamine
966	DMV	Department of Motor Vehicles
967	DMZ	DeMilitarized Zone
968	DN	Deacon
969	DNAW	Day Night All Weather
970	DNDi	Drugs for Neglected Diseases initiative
971	DNDO	U.S. Domestic Nuclear Detection Office
972	DNK	Denmark (ISO 3166 trigram)
973	DNM	Defence Nuclear Material
974	DNR	Do Not Resuscitate
975	DNS	Domain Name System
976	DOB	Date Of Birth
977	DOD	U.S. Department of Defense
978	DODAF	U.S. Department of Defense Architectural Framework
979	DoDD	U.S. Department of Defense Directive
980	DoDEA	(U.S.) Department of Defense Education Activity
981	DOE	U.S. Department of Energy
982	DOHC	Dual-OverHead-Cam engine
983	DOI	U.S. Department of the Interior
984	DORA	Defence of the Realm Act
985	DOS	Density of State
986	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
987	DotD	Deal of the Day (marketing gimmick)
988	DOW	Died of Wounds
989	DP	Division de production (Algerian petroleum company)
990	DPA	UK Defence Procurement Agency
991	DPCO	Double-Pole Change Over
992	DPDT	Double-Pole Double-Throw
993	DPI	Dots Per Inch
994	DPICM	Dual-Purpose Improved Conventional Munition
995	DPKO	UN Department for Peacekeeping Operations
996	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
997	DPPDB	Digital Point Positioning Database
998	DPRK	Democratic People's Republic of Korea
999	DPST	Double-Pole Single-Throw
1000	DRC	Democratic Republic of the Congo
1001	DRDC	Defence Research & Development Canada
1002	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1003	DRES	Defence Research Establishment Suffield (obsolete 2002)
1004	DRET	Defence Research Establishment Toronto (obsolete 2002)
1005	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1006	DRIC	(U.S.) Defense Research Information Center
1007	DRMS	(U.S.) Defense Revitalization and Marketing Service
1008	DRPR	Drawing Practices
1009	DRT	Document Related Technologies
1010	Ds	Darmstadtium
1011	DSAS	Disney Sing Along Songs
1012	DSB	(U.S.) Defense Science Board
1013	DSCS	U.S. Defense Satellite Communications System
1014	DSCSOC	DSCS Operations Center
1015	DSE	Dry Sheep Equivalent
1016	DSG	Direct-Shift Gearbox
1017	DSID	Dismounted Soldier Identification System
1018	DSL	Digital Subscriber Line
1019	DSLR	Digital single-lens reflex (camera)
1020	DSM	Diagnostic and Statistical Manual of Mental Disorders
1021	DSN	Deep Space Network
1022	DSPL	Design Specialists and Plans Language
1023	DSR	Deformed Special Relativity
1024	DST	Daylight Saving Time
1025	DSTL	British Defence Science and Technology Laboratory
1026	DSWA	(U.S.) Defense Special Weapons Agency
1027	DTA	Dental Technologists Association
1028	DTD	Digital Terrain Data
1029	DTG	Date-Time Group
1030	DTH	Direct To Home (television)
1031	DTI	UK Department of Trade and Industry
1032	DTIC	(U.S.) Defense Technical Information Center
1033	DTL	Diode-Transistor Logic (electronics)
1034	DTMF	Dual-tone multi-frequency signaling
1035	DTO	Disruptive Technology Office (was ARDA)
1036	DTR	Determine The Relationship
1037	DTSA	(U.S.) Defense Technology Security Administration
1038	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1039	DUSD	(U.S.) Deputy Under-Secretary of Defense
1040	DVLC	UK Driver and Vehicle Licencing Centre
1041	DVM	Doctor of Veterinary Medicine
1042	DVO	Direct View Optics
1043	DVOM	Digital Volt-Ohm Meter
1044	DVP	various meanings (disambiguation page)
1045	DW	Drum Workshop
1046	DWIM	Do What I Mean
1047	DWM	Doctor Who Magazine
1048	DWTS	Dancing with the Stars
1049	DWW	Down with Webster
1050	DXA	Dual-energy X-ray Absorptiometry
1051	DXM	DeXtroMethorphan
1052	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1053	Dy	Dysprosium
1054	DZA	Algeria (ISO 3166 trigram)
1055	E	East
1056	EABU	Explain Acronyms Before Use
1057	EAC	Echelons Above Corps
1058	EAPC	Euro-Atlantic Partnership Council
1059	EAST	Experimental Advanced Superconducting Tokamak
1060	EBD	Electronic Brake Distribution
1061	EBE	Extraterrestrial Biological Entity
1062	EBSA	Employee Benefits Security Administration
1063	EBW	Electron Beam Welding
1064	EBW	Exploding BridgeWire
1065	ECASS	European Centre for Analysis in the Social Sciences [1]
1066	ECBR	European Coalition for Biomedical Research
1067	ECCM	Electronic Counter-Counter-Measures
1068	ECFS	Electronic Case Filing System
1069	ECG	Electrocardiogram
1070	ECHR	European Convention on Human Rights
1071	ECJ	European Court of Justice
1072	ECL	Emitter Coupled Logic (electronics)
1073	ECommHR	European Commission on Human Rights
1074	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1075	ECT	ElectroConvulsive Therapy
1076	ECtHR	European Court of Human Rights
1077	EDA	European Defence Agency
1078	EDAC	Error Detection And Correction
1079	EDCS	Environmental Data Coding Specification
1080	EDH	Eastman Dental Hospital
1081	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1082	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1083	EEC	European Economic Community (predecessor of the EU)
1084	EEG	ElectroEncephaloGram
1085	EENT	End Evening Nautical Twilight
1086	EEO	Equal Employment Opportunity
1087	EEOC	(U.S.) Equal Employment Opportunity Commission
1088	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1089	EFF	Electronic Frontier Foundation
1090	EFL	English as a Foreign Language
1091	EFM	Enterprise Feedback Management
1092	EFOA	European Fuel Oxygenates Association
1093	EFSA	European Food Safety Authority
1094	EFT	Electronic Fund Transfer
1095	EFV	Expeditionary Fighting Vehicle
1096	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1097	EGCG	EpiGalloCatechin-3-Gallate
1098	EGIS	Erieye Ground Interface Segment
1099	EGRET	Energetic Gamma-Ray Experiment Telescope
1100	EGY	Egypt (ISO 3166 trigram)
1101	EHF	Extremely High Frequency
1102	EHR	Equipment History Record
1103	Ei	Exbi
1104	EI	Ireland (FIPS 10-4 country code; from Éire)
1105	EIA	Environmental Impact Assessment
1106	EIAH	Encyclopedia of Iranian Architectural History
1107	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1108	EIC	East India Company
1109	EICS	East India Company's Service
1110	eID	electronic ID
1111	EIRP	Effective Isotropic Radiated Power
1112	EIS	Environmental Impact Statement
1113	EJ	Exajoule
1114	EKG	Electrocardiogram (from German Elektrokardiogramm)
1115	EKMS	Electronic Key Management System
1116	EL	Exalitre
1117	ELINT	Electronic Intelligence
1118	ELL	English Language Learner
1119	ELM	Edge-Localised Mode (plasma physics)
1120	ELO	Electric Light Orchestra
1121	ELSS	Emergency Life Support Stores
1122	EM	ElectroMagnetism/ElectroMagnetic
1123	Em	Exametre
1124	EMA	European Medicines Agency
1125	EMCON	(Electromagnetic) Emissions Control
1126	EMDG	Euro-Missile Dynamics Group
1127	EMDR	Eye Movement Desensitisation and Reprocessing
1128	EMEA	Europe,Middle East and Africa
1129	EMG	ElectroMyoGraph
1130	EMP	ElectroMagnetic Pulse
1131	EMS	Emergency Medical Services
1132	EMT	Emergency Medical Technician
1133	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1134	ENE	East North-East
1135	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1136	ENTEC	Euro NATO Training Engineer Centre
1137	ENVL	Envelope
1138	ENY	Enemy
1139	EOD	Explosive Ordnance Disposal
1140	EOG	ElectroOculoGraphy
1141	EOM	End of Message
1142	EOSAT	Earth Observation Satellite
1143	EOSDIS	Earth Observation Satellite Data and Information System
1144	EP	European Parliament
1145	EP	Extended play
1146	EPCOT	Experimental Prototype Community Of Tomorrow
1147	EPGS	EOS Polar Ground Sites
1148	EPIRB	Emergency Position Indicating Radio Beacon
1149	EPL	English Premier League
1150	EPOS	Electronic Point Of Sale
1151	EPPA	Employee Polygraph Protection Act
1152	EPR	European Pressurised [Nuclear] Reactor
1153	EQ	Emotional Quotient
1154	Er	Erbium
1155	ERCIM	European Research Consortium for Informatics and Mathematics
1156	ERI	Eritrea (ISO 3166 trigram)
1157	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1158	EROS	Earth Resources Observation System
1159	ERP	Engineer Regulating Point
1160	ERR	Eesti Rahvusringhääling
1161	ERS	Earth Resources Survey
1162	ERTS	Earth Resources Technology Satellite (became Landsat)
1163	ERV	Endogenous RetroVirus
1164	ESD	ElectroStatic Discharge
1165	ESDP	European Security and Defence Policy
1166	ESE	East South-East
1167	ESH	Western Sahara (ISO 3166 trigram)
1168	ESL	English as a Second Language
1169	ESM	Electronic warfare Support Measures
1170	ESO	European Southern Observatory
1171	ESOL	English for Speakers of Other Languages
1172	ESPN	Entertainment and Sports Programming Network
1173	ESU	Emergency Services Unit
1174	ESV	Engineer Support Vehicle
1175	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1176	ETH	Ethiopia (ISO 3166 trigram)
1177	ETI	Extra-Terrestrial Intelligence
1178	ETLA	Extended TLA
1179	ETT	Embedded Training Team
1180	Eu	Europium
1181	EUCOM	(U.S.) European Command
1182	EUUSA	European Union and United States of America
1183	EV	Exavolt
1184	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1185	EWTN	Eternal Word Television Network
1186	Exatesla	Extra Terrestrial
1187	EXREP	Expeditious Repair (SM&R code)
1188	f	Femto
1189	fA	Femtoampere
1190	FA	Food Addicts in Recovery Anonymous
1191	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1192	FAAD	Forward Area Air Defence
1193	FAADEZ	Forward Area Air Defence Engagement Zone
1194	FAAFP	Fellow of the American Academy of Family Physicians
1195	FAAN	Fellow of the American Academy of Neurology
1196	FAAN	Fellow of the American Academy of Nursing
1197	FAAQ	Frequently Asked and Anticipated Questions
1198	FAASV	Field Artillery Ammunition Supply Vehicle
1199	FAB	Feline Advisory Bureau (UK feline charity)
1200	FACA	(US) Federal Advisory Committee Act
1201	FACH	Fuerza Aérea de Chile
1202	FACN	Fellow of the American College of Nutrition
1203	FACP	Fellow of the American College of Physicians
1204	FACTS	Flexible Alternating Current Transmission System
1205	FAM	Foreign Affairs Manual
1206	FAO	Food and Agriculture Organization
1207	FAPA	Fellow of the American Psychological Association
1208	FAPHA	Fellow of the American Public Health Association
1209	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1210	FASCAM	Family of Scatterable Mines[1]
1211	FASD	Fetal Alcohol Spectrum Disorder
1212	FASEB	Federation of American Societies for Experimental Biology
1213	FAT	Field Artillery Tractor
1214	FAVS	Future Armoured Vehicle System
1215	FAW	Football Association of Wales
1216	FBCS	Fellow of the British Computer Society
1217	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1218	FBIS	Foreign Broadcast Information Service
1219	FBM	Board foot
1220	fC	Femtocoulomb
1221	FCC	U.S. Federal Communications Commission
1222	FCE	First Certificate in English
1223	FCF	Financial Free Cash Flow
1224	FCLA	Fraud Claims Law Associate
1225	FCO	UK Foreign and Commonwealth Office
1226	FCW	Florida Championship Wrestling
1227	FD	Falun Dafa
1228	FDA	Food and Drug Administration (U.S.)
1229	FDBK	(I) Feedback
1230	Fe	Iron (Latin Ferrum)
1231	FEAST	Forum for European-Australian Science and Technology Cooperation
1232	FEATS	Festival of European Anglophone Theatrical Societies link title
1233	FEBA	Forward Edge of the Battle Area
1234	FED	Field Emission Display
1235	FEDEP	Federation Development Process (Simulation)
1236	FEF	Frontal Eye Field (neurophysiology)
1237	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1238	FENS	Federation of European Neuroscience Societies
1239	FES	Flywheel Energy Storage
1240	FEST	Frankfurt English Speaking Theatre link title
1241	FET	Field-effect transistor
1242	FEZ	Fighter Engagement Zone
1243	fF	Femtofarad
1244	FF	Final Fantasy
1245	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1246	FFC	Free For Chat
1247	FFE	Fukuoka Futures Exchange
1248	FFF	Fédération française de football (French for: French Football Federation)
1249	FFG	Guided Missile Frigate (hull classification symbol)
1250	FFOV	Forward Field Of View
1251	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1252	FFS	For Fuck's Sake
1253	FFT	Final Fantasy Tactics
1254	FG	Falun Gong
1255	fg	Femtogram
1256	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1257	FGOTUS	First Gentleman of the United States
1258	FGR	Flickr Group Roulette
1259	fH	Femtohenry
1260	FHFIF	Foster's Home for Imaginary Friends
1261	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1262	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1263	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1264	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1265	FIBUA	Fighting In Built-Up Areas
1266	FIC	Fellowship for Intentional Community
1267	FID	Foreign Internal Defence
1268	FIE	Fly-In Echelon
1269	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1270	FIFe	Fédération internationale féline (French for: International Feline Federation)
1271	FIFO	First In, First Out
1272	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1273	FIGJAM	Fuck I'm Good, Just Ask Me
1274	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1275	FIN	Finland (ISO 3166 trigram)
1276	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1277	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1278	FIS	Fédération internationale de ski (French for: International Ski Federation)
1279	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1280	FISH	Fluorescence In-Situ Hybridisation
1281	FiST	Fire Support Team
1282	FITS	Flexible Image Transport System
1283	FIU	Florida International University
1284	fJ	Femtojoule
1285	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1286	FJI	Fiji (ISO 3166 trigram)
1287	FJN	Financial Job Network
1288	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1289	fK	Femtokelvin
1290	FKSM	Fort Knox Supplemental Manual
1291	FKT	Fastest Known Time
1292	fL	Femtolitre
1293	FL	Florida (postal symbol)
1294	fl	floruit (Latin for: living) (genealogy)
1295	FLA	Florida,Front Line Assembly,Future Large Aircraft
1296	FLAB	Four-letter abbreviation
1297	FLAC	Free Legal Advice Centres
1298	FLAC	Free Lossless Audio Codec
1299	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1300	FLB	Forward Logistics Base
1301	FLET	Forward Line of Enemy Troops
1302	FLG	Falun Gong
1303	FLIP	Flight Information Publication
1304	FLIR	Forward Looking InfraRed (sensor)
1305	FLK	Falkland Islands (ISO 3166 trigram)
1306	FLOT	Forward Line of Own Troops
1307	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1308	FLQ	Free Legal Questions
1309	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1310	FLSA	Fair Labor Standards Act
1311	FLTSAT	Fleet Satellite
1312	FLTSATCOM	Fleet Satellite Communication System
1313	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1314	FM	Factory Mutual
1315	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)
1316	fm	Femtometre
1317	Fm	Fermium
1318	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1319	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1320	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1321	FMCG	Fast Moving Consumer Goods
1322	FME	Formal Methods Europe
1323	FMECA	Failure Modes and Effect Criticality Analysis
1324	FMJD	Fédération Mondiale du Jeu de Dames
1325	FMLA	Family Medical Leave Act
1326	FoE	Friends of the Earth
1327	FOGC	Federal Oil and Gas Council
1328	FOH	Front Of House
1329	FOIA	Freedom of Information Act
1330	FOM	Federation Object Model
1331	FONSI	Finding of No Significant Impact
1332	FOO	Forward Observation Officer
1333	FOOP	Friends Of Organ Pipes (Volunteer group)
1334	FoS	Family of Systems
1335	FOSE	Fallout 3 Script Extender
1336	FOSE	Federal Office Systems Expo
1337	FOT	Free on truck
1338	FOTA	Fellow of the Orthodontic Technicians Association
1339	FOTC	Flight of the Conchords
1340	FOUO	For Official Use Only
1341	FP	French Polynesia (FIPS 10-4 territory code)
1342	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1343	FPS	Fire Prevention System
1344	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1345	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1346	Fr	Francium
1347	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1348	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1349	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1350	FRICBM	Full Range ICBM
1351	FRO	Faroe Islands (ISO 3166 trigram)
1352	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1353	FRSA	Fellow of the Royal Society of Art
1354	FRY	Federal Republic of Yugoslavia
1355	fs	Femtosecond
1356	fS	Femtosiemens
1357	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1358	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1359	FSCL	Fire Support Co-ordination Line
1360	FSE	Fire Support Element
1361	FSF	Free Software Foundation
1362	FSH	Follicle Stimulating Hormone
1363	FSI	Fuel Stratified Injection
1364	FSS	Fire Support Station
1365	FSSP	Families of Structurally Similar Proteins
1366	FSTC	Foreign Science Technology Center (now NGIC)
1367	fT	Femtotesla
1368	FTC	Federal Trade Commission
1369	FTE	Full Time Equivalent
1370	FTL	Faster Than Light
1371	FTS	Flight Termination System used during some rocket launches
1372	FTS	Fuck That Shit
1373	FU	Smoke (METAR Code)
1374	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1375	fV	Femtovolt
1376	fW	Femtowatt
1377	FW	Forward
1378	FWC	Football World Cup
1379	FWF	Fixed Word Format
1380	FWI	French West Indies
1381	FWIW	For What It's Worth
1382	FWS	U.S. Fish and Wildlife Service
1383	FWT	Fresh Water Tank
1384	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1385	FYA	For Your Agenda
1386	FYDP	Five-Year Defense Plan (U.S.)
1387	FYI	For Your Information
1388	FYROM	Former Yugoslav Republic of Macedonia
1389	FZDZ	Freezing Drizzle (METAR Code)
1390	FZFG	Freezing Fog (METAR Code)
1391	FZRA	Freezing Rain (METAR Code)
1392	g	Gram
1393	G3	Heckler & Koch G3
1394	GAAR	General Anti-Avoidance Rule (tax evasion)
1395	GAB	Gabon (ISO 3166 trigram)
1396	GABA	Gamma-AminoButyric Acid
1397	GAD	Generalized Anxiety Disorder
1398	GAF	Garfield and Friends
1399	GAO	U.S. Government Accountability Office
1400	GAW	Global Atmospheric Watch
1401	GBBC	Great (Global) Backyard Bird Count
1402	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1403	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1404	GCA	Graduate in Claims Administration
1405	GCD	see entry
1406	GCF	Greatest Common Factor
1407	GCI	Ground-controlled interception
1408	GCN	Gamma-ray burst Coordination Network
1409	GCS	Global Coordinate System
1410	GCSE	General Certificate of Secondary Education (UK)
1411	Gd	Gadolinium
1412	GD	Grenada (ISO 3166 digram)
1413	GDL	Game Definition Language
1414	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1415	GDR	German Democratic Republic (cf. DDR)
1416	GDW	Game Designers Workshop
1417	Ge	Germanium
1418	GEBCO	General Bathymetric Chart of the Oceans
1419	GEC	Great Engineering Challenge
1420	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1421	GEEP	Geophysical Equipment Exploration Platform
1422	GEN	Full General (four stars) in the U.S. Army
1423	GeV	Gigaelectron-volt
1424	GEV	Ground Effect Vehicle
1425	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1426	GFI	Ground Fault Interruptor (aka GFCI)
1427	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1428	GFN	Global Footprint Network
1429	GG	Georgia (FIPS 10-4 country code)
1430	GGK	Good God Karma
1431	GHA	Ghana (ISO 3166 trigram)
1432	GHB	gamma-Hydroxybutyric acid
1433	Gi	Gibi
1434	GIB	Gibraltar (ISO 3166 trigram)
1435	GIG	Global Information Grid
1436	GINO	Godzilla In Name Only
1437	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1438	GJD	Geocentric Julian Day
1439	GLAAD	Gay and Lesbian Alliance Against Defamation
1440	GLAC	General Ledger Accounting Code
1441	GLAST	Gamma-ray Large Area Space Telescope
1442	GLBA	Gramm-Leach-Bliley Act
1443	GLC	Gas-liquid chromatography
1444	GLP	Guadeloupe (ISO 3166 trigram)
1445	GLV	Gained Life Value
1446	Gm	Gigametre
1447	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1448	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
1449	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1450	GMFSC	Ground Mobile Forces Satellite Communications
1451	GMO	Genetically Modified Organism
1452	GMPCS	Global Mobile Personal Communications by Satellite
1453	GNAS	Grand National Archery Society
1454	GNB	Guinea-Bissau (ISO 3166 trigram)
1455	GNP	Gross National Product
1456	GNQ	Equatorial Guinea (ISO 3166 trigram)
1457	GnRH	Gonadotropin-Releasing Hormone
1458	GO	Glorioso Islands (FIPS 10-4 territory code)
1459	GOA	General of the Army (United States only)
1460	GOAT	Greatest Of All Time
1461	GOC	General Officer Commanding
1462	GOES	Geostationary Operational Environmental Satellite
1463	GOP	Grand Old Party
1464	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1465	GOSC	General Officer Steering Committee
1466	GOSH	Great Ormond Street Hospital
1467	GOSP	Gas/Oil Separation Plant
1468	GOTS	Government off-the-shelf
1469	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1470	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1471	GPA	Grade Point Average
1472	GPC	Global Path Cache
1473	GPIB	General-Purpose Instrumentation/Interface Bus
1474	GPO	General Post Office
1475	GPPC	Genetics and Public Policy Center
1476	GPR	Ground-Penetrating Radar
1477	GPS	General Problem Solver,Global Positioning System
1478	GPT	General Purpose Technology, Get paid to surf (an online business model)
1479	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]
1480	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1481	GRAIL	Gravity Recovery and Interior Laboratory
1482	GRAS	Generally recognized as safe (FDA list)
1483	GRB	Gamma-Ray Burst
1484	GRC	Greece (ISO 3166 trigram)
1485	GRD	Grenada (ISO 3166 trigram)
1486	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1487	grep	[search] Globally for Regular Expression,Print [lines]
1488	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1489	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1490	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1491	GRL	Greenland (ISO 3166 trigram)
1492	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1493	Gs	Gigasecond
1494	GSA	U.S. General Services Administration
1495	GSD	Graphical Situation Display
1496	GSGB	(God send glamour boy 9-10/10)
1497	GSK	GlaxoSmithKline [good sexual karma]
1498	GSN	Game Show Network
1499	GSO	General Services Officer (U.S. Department of State)
1500	GSOH	Good Sense Of Humour
1501	GSP	Georges St-Pierre (Canadian MMA fighter)
1502	GSR	Gun Shot Residue
1503	GSS	Generic Security Services
1504	GSW	Gunshot wound
1505	GTD	Getting Things Done
1506	GTG	Got To Go (Internet chat)
1507	GTGN	Getty Thesaurus of Geographic Names
1508	GTK	Good To Know (Internet chat)
1509	GTM	Guatemala (ISO 3166 trigram)
1510	GU	Guam (postal symbol; ISO 3166 digram)
1511	GUF	French Guiana (ISO 3166 trigram)
1512	GUILT	Gangliated Utrophin Immuno Latency Toxin
1513	GULCR	Grupo de Usuarios de Linux de Costa Rica
1514	GUT	Grand Unification Theory
1515	GWARS	Ground Warfare System (simulation)
1516	GWAS	Grand Western Archery Society
1517	GWOT	Global War on Terrorism
1518	GXE	Gene-enivronment interaction
1519	GXM	Matrox Graphics eXpansion Module
1520	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1521	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1522	h	Hecto
1523	HAARP	High Frequency Active Auroral Research Program
1524	HAART	Highly Active Anti-Retroviral Therapy
1525	HAI	Human Awareness Institute
1526	HAL	Hardware Abstraction Layer
1527	HALO	High Altitude Low Opening (parachute jump)
1528	HAM	Amateur radio operator
1529	HANS	Head And Neck Support (device used in many race cars)
1530	HARM	High-speed Anti-Radiation Missile
1531	HAW	Heavy Antitank Weapon
1532	HAWK	Homing All the Way Killer (air defence system)
1533	HAZ	Heat-Affected Zone
1534	HAZMAT	Hazardous Materials
1535	HBCD	HexaBromoCycloDodecane
1536	HBO	Home Box Office
1537	HBR	Harvard Business Review
1538	HBT	Heterojunction Bipolar Transistor
1539	HBV	Hepatitis B Virus
1540	HCCI	Homogeneous Charge Compression Ignition
1541	HCF	Highest Common Factor
1542	HCSC	Higher Command and Staff Course
1543	HDL	High-Density Lipoprotein
1544	HDM	Human Decision-Making
1545	HDRA	Henry Doubleday Research Association
1546	He	Helium
1547	HE	High Explosive
1548	HEAT	High Explosive Anti-Tank (ammunition)
1549	HEBA	Hellenic Basketball Clubs Association
1550	HEER	High-Explosive Extended Range (ammunition)
1551	HEIC	Honourable East India Company
1552	HEMP	High-Altitude Electromagnetic Pulse
1553	HEOSS	High Earth Orbit Space Surveillance
1554	HEP	High-Explosive Plastic (ammunition)
1555	HEPA	High-Efficiency Particulate Air (filter)
1556	HESV	Heavy Engineering Support Vehicle
1557	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1558	HEU	Highly Enriched Uranium
1559	Hf	Hafnium
1560	HF	High Frequency
1561	HFE	Human Fertilisation and Embryology (UK Act)
1562	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1563	HFEA	Human Fertilisation and Embryology Authority (UK)
1564	Hg	Mercury (Latin Hydrargyrum)
1565	HGC	UK Human Genetics Commission
1566	HGF	Human Growth Factor
1567	HGTV	Home & Garden Television
1568	HI	Hawaii (postal symbol)
1569	HIH	His (or Her) Imperial Highness
1570	HIM	His (or Her) Imperial Majesty
1571	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1572	HIMEZ	High Altitude Missile Engagement Zone
1573	HIMYM	How I Met Your Mother
1574	HIPAA	U.S. Health Insurance Portability and Accountability Act
1575	Hipparcos	HIgh Precision Parallax COllecting Satellite
1576	Hird	Hurd of interfaces representing depth (cf. HURD)
1577	HiRISE	High Resolution Imaging Science Experiment
1578	HIT	Health Information Technology
1579	HIV	Human Immunodeficiency Virus
1580	HIWT	Hobart Institute of Welding Technology
1581	HJD	Heliocentric Julian Day
1582	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1583	HKG	Hong Kong (ISO 3166 trigram)
1584	HKS	HyperKinetic Syndrome
1585	hL	Hectolitre
1586	HL	Holding Line
1587	HLL	High-Level Language
1588	HLN	Headline News
1589	HLOS	High Level Output Specification
1590	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1591	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1592	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1593	HMF	HydroxyMethyl Furfural
1594	HMO	Health maintenance organization
1595	HMP	Her Majesty's Prison
1596	HMRC	Her/His Majesty's Revenue and Customs
1597	HMSO	Her Majesty's Stationery Office
1598	HMV	His Master's Voice
1599	HN	Honduras (ISO 3166 digram)
1600	HND	Honduras (ISO 3166 trigram)
1601	Ho	Holmium
1602	HO	Honduras (FIPS 10-4 country code)
1603	HOLLAND	Hope Our Love Lasts And Never Dies
1604	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1605	HOT	Highly Optimised Tolerance
1606	HOTAS	Hands on throttle-and-stick
1607	HOV	High Occupancy Vehicle
1608	hp	horse power
1609	HPA	UK Health Protection Agency
1610	HPCL	Hindustan Petroleum Corporation Limited
1611	HPLC	High Performance Liquid Chromatography
1612	HPT	High[er] Payoff Target
1613	HPV	Human Papilloma Virus
1614	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1615	HRD	Human Resource Development
1616	HRF	High iness Forces
1617	HRH	His (or Her) Royal Highness
1618	HRM	His (or Her) Royal Majesty
1619	HRM	Human Resource Management
1620	HRT	Hormone Replacement Therapy
1621	Hs	Hassium
1622	HSBC	The Hong Kong and Shanghai Banking Corporation
1623	HSC	Higher School Certificate
1624	HSM	High School Musical
1625	HSMAD	Human Science/Modeling and Analysis Data
1626	HSN	Home Shopping Network
1627	HSPH	Harvard School of Public Health
1628	HSSI	High-Speed Serial Interface
1629	HST	see entry
1630	HTA	HyperText Application
1631	HTFU	Harden The Fuck Up
1632	HTH	Hope That Helps
1633	HTI	Haiti (ISO 3166 trigram)
1634	HTML	HyperText Markup Language
1635	HTR	Heated Towel Rail
1636	HTS	High-Temperature Superconducting wire
1637	HTTP	HyperText Transfer Protocol
1638	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1639	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1640	HUN	Hungary (ISO 3166 trigram)
1641	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1642	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1643	HVAP	High Velocity Armour Piercing (ammunition)
1644	HVHF	High velocity human factors
1645	HVM	High Velocity Missile
1646	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1647	HWM	Hardware morphing (computer graphics rendering)
1648	HXB	The glycoprotein Tenascian C
1649	HZ	Haze (METAR Code)
1650	Hz	Hertz
1651	IA	Iowa (postal symbol)
1652	IAAL	I Am A Lawyer
1653	IAB	International Association for Biologicals
1654	IAD	Ion Assisted Deposition
1655	IADS	Integrated Air Defence System
1656	IAEA	International Atomic Energy Agency
1657	IAF	{i} Industrial Areas Foundation
1658	IAFG	Information Assurance Focus Group
1659	IANA	Internet Assigned Numbers Authority
1660	IANAL	I Am Not A Lawyer
1661	IAS	Image Assessment System
1662	IASIP	It's Always Sunny in Philadelphia
1663	IATA	International Air Transport Association
1664	IATF	International Automotive Task Force
1665	IATSE	International Alliance of Theatrical Stage Employees
1666	IAUC	International Astronomical Union Circular
1667	IAW	In Accordance With
1668	IB	International Baccalaureate
1669	IBA	Important Bird Area
1670	IBD	Inflammatory Bowel Disease
1671	IBDM	Information Based Decision Making
1672	IBM	International Business Machines
1673	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1674	IBS	Irritable Bowel Syndrome
1675	ICANN	Internet Corporation for Assigned Names and Numbers
1676	ICAO	International Civil Aviation Organization
1677	ICBM	Intercontinental Ballistic Missile
1678	ICBN	International Code of Botanical Nomenclature
1679	ICE	In case of emergency
1680	ICES	International Council for the Exploration of the Sea
1681	ICF	Intelligent Community Forum
1682	ICMP	Internet Control Message Protocol
1683	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1684	ICO	Intermediate Circular Orbit
1685	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1686	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1687	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1688	ICRL	Individual Component Repair List
1689	ICRS	International Celestial Reference System
1690	ICSI	Intracytoplasmic Sperm Injection
1691	ICT	Information and communication technologies
1692	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1693	ICV	Infantry Carrier Vehicle
1694	ICYMI	In Case You Missed It
1695	IDC	International Data Corporation
1696	IDDI	I don't do initialisms (see irony)
1697	IDGAF	I don't give a fuck
1698	IDK	I don't know
1699	IDL	Interface Definition Language
1700	IDN	Indonesia (ISO 3166 trigram)
1701	IEA	International Energy Agency
1702	IEC	International Electrotechnical Commission
1703	IED	Improvised Explosive Device
1704	IELTS	International English Language Testing System
1705	IER	Information Exchange Requirement
1706	IET	Initial Entry Training
1707	IET	Institution of Engineering and Technology
1708	IETF	Internet Engineering Task Force
1709	IEW	Intelligence and Electronic Warfare
1710	IFAB	International Football Association Board
1711	IFAH	International Federation for Animal Health
1712	IFAP	International Federation of Agricultural Producers
1713	IFO	Identified Flying Object (see also UFO)
1714	IFOV	Instantaneous Field of View
1715	IFPI	International Federation of Phonographic Industries
1716	IFRB	International Frequency Registration Board
1717	IFV	Infantry Fighting Vehicle
1718	IG	Inspector General
1719	IGNOU	Indira Gandhi National Open University
1720	IGS	International Ground Station
1721	IHH	Idiopathic Hypogonadotropic Hypogonadism
1722	IHO	International Hydrographic Organization
1723	IHR	Institute for Historical Review
1724	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1725	II	Two (in Roman numerals)
1726	IICA	Inter-American Institute for Cooperation on Agriculture
1727	IIE	Innovative Interstellar Explorer
1728	III	Three (in Roman numerals)
1729	IIRC	If I Recall/Remember Correctly
1730	IISS	International Institute for Strategic Studies
1731	IJN	Imperial Japanese Navy (World War II)
1732	IJWP	Interim Joint Warfare Publication
1733	ILDS	Improved Landmine Detection System
1734	ILO	International Labour Organization
1735	ILRI	International Livestock Research Institute
1736	ILY	I Love You [pronounced ILL-LEE]
1737	IMBD	International Migratory Bird Day
1738	IMDb	Internet Movie Database
1739	IME	In My Experience
1740	IMHO	In My Humble/Honest Opinion
1741	IML	International Mister Leather
1742	IMNSHO	In My Not So Humble Opinion
1743	IMPAC	International Merchant Purchase Authorization Card
1744	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1745	IMPATT	IMPact Avalanche Transit Time diode
1746	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1747	IMRL	Individual Material iness List
1748	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1749	IMsL	International Ms. Leather
1750	IMT	Integrated Management Tool
1751	IMU	International Mathematical Union
1752	In	Indium
1753	INA	Immigration and Nationality Act
1754	INAS	International Near-Earth Asteroid Survey
1755	INCITS	InterNational Committee for Information Technology Standards
1756	IND	India (ISO 3166 trigram)
1757	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1758	inet	the Internet
1759	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1760	INFOSEC	Information Security
1761	INLA	Irish National Liberation Army
1762	INMARSAT	International Maritime Satellite organization
1763	INRIA	Institut national de recherche en informatique et en automatique
1764	INS	Immigration and Naturalization Service
1765	InSAR	Interferometric synthetic aperture radar
1766	INST	Information Standards and Technology
1767	INTERFET	International Force for East Timor
1768	INTSUM	Intelligence Summary
1769	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1770	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1771	IPB	Intelligence Preparation of the Battlefield
1772	IPL	Inferior Parietal Lobule
1773	IPO	Initial Public Offering
1774	IPT	Integrated Product/Project Team
1775	IPTS	Institute for Prospective Technological Studies
1776	IPTV	Internet Protocol TeleVision
1777	IPW	Interrogation of Prisoners of War
1778	Ir	Iridium
1779	IRAD	Internal Research and Development
1780	IRAN	(I) Inspect and Repair As Necessary
1781	IRAS	Infrared Astronomical Satellite
1782	IRB	International Rugby Board
1783	IRBM	Intermediate Range Ballistic Missile
1784	IREA	Intermountain Rural Electric Association
1785	IRINN	Islamic Republic of Iran News Network
1786	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1787	IRN	Iran (ISO 3166 trigram)
1788	IRO	International Refugee Organisation
1789	IRQ	Iraq (ISO 3166 trigram)
1790	IRS	U.S. Internal Revenue Service
1791	IRST	Infra-red Search and Track
1792	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1793	ISAR	Inverse SAR (Synthetic Aperture Radar)
1794	ISB	Intermediate Staging Base
1795	ISBN	International Standard Book Number (ISO 2108)
1796	ISCCP	International Satellite Cloud Climatology Project
1797	ISCII	Indian Standard Code for Information Interchange
1798	ISDN	Integrated Services Digital Network
1799	ISEF	Intel International Science and Engineering Fair
1800	ISEN	Internet Search Environment Number
1801	ISF	Internal Security Force
1802	ISIL	Islamic State of Iraq and the Levant
1803	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1804	ISL	Iceland (ISO 3166 trigram)
1805	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1806	ISMB	International Society of Matrix Biologists
1807	ISMC	Intelligent Sounding Meaningless Conversation
1808	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1809	ISPE	International Society for Pharmacoepidemiology
1810	ISRO	Indian Space Research Organisation
1811	ISSCR	International Society for Stem Cell Research
1812	ISSN	International standard serial number (ISO 3297)
1813	ISTC	Institute of Scientific and Technical Communications (UK)
1814	ISTS	Intel Science Talent Search
1815	ITA	Italy (ISO 3166 trigram)
1816	ITAG	Inertial Terrain-Aided Guidance
1817	ITALY	I'll Truly Always Love You
1818	ITAS	Improved Target Acquisition Sight
1819	ITC	InferoTemporal Cortex (neurophysiology)
1820	ITCZ	Intertropical Convergence Zone
1821	ITEC	Information Technology Exposition & Conference
1822	ITEMS	Interactive Tactical Environment Management System
1823	ITER	International Thermonuclear Experimental Reactor
1824	ITF	International Tennis Federation
1825	ITK	In The Know
1826	ITN	Independent Television News (British)
1827	ITT	International Telephone and Telegraph (U.S.)
1828	ITTO	International Tropical Timber Organization
1829	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1830	Iveco	Industrial Vehicles Corporation
1831	IVF	In Vitro Fertilisation
1832	IVI	Interchangeable Virtual Instrument
1833	IVIS	Inter-Vehicle Information System
1834	IVL	Inter-Visibility Line
1835	IVM	In Vitro [Oocyte] Maturation
1836	IVO	In Vicinity Of
1837	IW	Information Warfare
1838	IWARS	Infantry Warrior Simulation
1839	IWC	International Whaling Commission
1840	IWW	Industrial Workers of the World
1841	IX	Nine (in Roman numerals)
1842	IXT	IntraText digital library; IntraText lexical hypertext
1843	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1844	IZ	Iraq (FIPS 10-4 country code)
1845	J	Joule
1846	J1	Joint [Manpower &] Personnel Directorate
1847	J2	Joint Intelligence Directorate
1848	J3	Joint Operations Directorate
1849	J4	Joint Logistics Directorate
1850	J5	Joint Strategic Plans & Policy Directorate
1851	J7	Joint Operational Plans & Interoperability Directorate
1852	JA	Japan (FIPS 10-4 country code)
1853	JAFT	Just A Field Test
1854	JAL	Japan Airlines
1855	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1856	JAM	Jamaica (ISO 3166 trigram)
1857	JAMA	Journal of the American Medical Association
1858	JANET	Joint Academic Network
1859	JATO	Jet-Assisted Take-Off
1860	JB	Jail Bait
1861	JB	Junior Branch
1862	JBFSA	Joint Blue Force Situational Awareness
1863	JCDB	Joint Common Data Base
1864	JCDS	Joint Chiefs of the Defence Staff
1865	JCIDS	Joint Capabilities Integration and Development System
1866	JCL	Job Control Language
1867	JCP	Java Community Process
1868	JCS	Joint Chiefs of Staff
1869	JCW	Juggalo Championship Wrestling
1870	JDBC	Java Data Base Connectivity
1871	JDEM	Joint Dark Energy Mission
1872	JDL	Jewish Defense League
1873	JE	Jersey (FIPS 10-4 territory code)
1874	JEFX	Joint Expeditionary Force eXperiment
1875	JET	Joint European Torus
1876	JEZ	Joint Engagement Zone
1877	JFACC	Joint Force Air Component Commander
1878	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1879	JFC	Joint Force Commander
1880	JFK	John Fitzgerald Kennedy or the airport named after him.
1881	JFLCC	Joint Force Land Component Commander
1882	JFMCC	Joint Force Maritime Component Commander
1883	JFO	Journal of Field Ornithology
1884	JFSOCC	Joint Force Special Operations Component Commander
1885	JFTX	Joint Field Training Exercise
1886	JH	Japan Highway Public Corporation
1887	JH	Jharkhand (Indian state code)
1888	JI	Joint Implementation
1889	JIB	Joint Information Bureau
1890	JIC	Joint Intelligence Centre
1891	JINI	Java Intelligent Network Infrastructure
1892	JITC	Joint Interoperability Test Command
1893	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1894	JJAP	Japanese Journal of Applied Physics
1895	JL	Japan Airlines (IATA airline designator)
1896	JLA	Justice League of America
1897	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1898	JMS	Java Message Service
1899	JN	Jan Mayen Island (FIPS 10-4 territory code)
1900	JNI	Java Native Interface
1901	JNLP	Java Network Launch Protocol
1902	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1903	JOA	Joint Operations Area
1904	JOPES	Joint Operations Planning and Execution System
1905	JOR	Jordan (ISO 3166 trigram)
1906	JOTS	Joint Operations Tactical System
1907	JPL	Jet Propulsion Laboratory
1908	JPN	Japan (ISO 3166 trigram)
1909	JPOW	Joint Project Optic Windmill
1910	JRDF	Joint Rapid Deployment Forces
1911	JRE	Java Runtime Environment
1912	JREF	James Randi Educational Foundation
1913	JROC	Joint Requirements Oversight Council
1914	JROCM	JROC Memorandum
1915	JRRF	Joint Rapid Reaction Force
1916	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1917	JSAP	Japan Society of Applied Physics
1918	JSCSC	Joint Services Command and Staff College
1919	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
1920	JSF	Joint Strike Fighter
1921	JSIMS	Joint Simulation System
1922	JSOA	Joint Special Operations Area
1923	JSOTF	Joint Special Operations Task Force
1924	JSP	JavaServer Page
1925	JSP	Joint Services Publication
1926	JSR	Java Specification Request
1927	JSS	Joint Support Ship Project
1928	JTC	Joint Training Confederation
1929	JTF	Joint Task Force
1930	JTFEX	Joint Task Force Exercise
1931	JTLS	Joint Theater Level Simulation
1932	JTMD	Joint Theatre Missile Defence
1933	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
1934	JU	Juan de Nova Island (FIPS 10-4 territory code)
1935	JUGFET	JUnction Gate Field-Effect Transistor
1936	JUICE	JUpiter ICy Moon Explorer
1937	JUO	Joint Urban Operations
1938	JV	Joint Venture,Junior Varsity
1939	JW	Jehovah's Witnesses
1940	JWARS	Joint Warfare System (simulation)
1941	JWP	Joint Warfare Publication
1942	JY	Japanese Yen
1943	JZ	Joint Zone
1944	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
1945	k	Kilo-
1946	K	picokelvin
1947	K9	Canine Police Unit
1948	Ka	Kamov Design Bureau
1949	kA	Kiloampere
1950	KA	Knowledge Acquisition,Karnataka (Indian state code)
1951	KAF	Kandahar Air Field
1952	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
1953	KARNAC	Knowledge Aided Retrieval in Activity Context
1954	KARR	Knight Automated Roving Robot (Knight Rider character)
1955	KATUSA	Korean Augmentation To United States Army
1956	KAZ	Kazakhstan (ISO 3166 trigram)
1957	KBE	Knight Commander of the Order of the British Empire
1958	KBO	Kuiper Belt Object
1959	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
1960	kC	Kilocoulomb
1961	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
1962	KCL	King's College London
1963	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
1964	KCS	Kansas City Southern Railway (AAR reporting mark)
1965	KD	Kawasaki Disease,Kraft Dinner
1966	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
1967	KEDO	Korean Peninsula Energy Development Organization
1968	KEN	Kenya (ISO 3166 trigram)
1969	KERA	Kentucky Education Reform Act (of 1990)
1970	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
1971	KESR	Kent and East Sussex Railway.
1972	KET	Kentucky Educational Television,Key English Test
1973	kF	Kilofarad
1974	KFC	Kentucky Fried Chicken
1975	KFOR	UN Kosovo Force
1976	KFUPM	King Fahd University of Petroleum & Minerals
1977	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
1978	KGO	Knight of the Guelphic Order of Hanover
1979	KGZ	Kyrgyzstan (ISO 3166 trigram)
1980	KH	Cambodia (ISO 3166 digram)
1981	kH	Kilohenry
1982	KHL	Kontinental Hockey League
1983	KHM	Cambodia (ISO 3166 trigram)
1984	KHz	Kilohertz
1985	Ki	Kibi
1986	KI	Kiribati (ISO 3166 digram)
1987	KIA	Killed In Action
1988	KIDS	Knowledge-based Integrated Design System
1989	KIR	Kiribati (ISO 3166 trigram)
1990	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
1991	KIT	Keep In Touch
1992	KITECH	Korean Institute of Industrial Technology
1993	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
1994	kJ	Kilojoule
1995	kK	Kilokelvin
1996	KKK	Ku Klux Klan
1997	kL	Kilolitre
1998	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
1999	KLOC	Kilo Lines Of Code
2000	KM	Comoros,Knowledge Management
2001	kN	Kilonewton
2002	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2003	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2004	KO	Knocked Out
2005	KOR	Republic of Korea (ISO 3166 trigram)
2006	KP	Kim Possible
2007	KPMG	Klynveld,Peat,Marwick,Goerdeler
2008	KPNO	Kitt Peak National Observatory
2009	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2010	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2011	Kr	Krypton
2012	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2013	kS	Kilosiemens
2014	KSC	Kennedy Space Center
2015	KSI	Killed or Seriously Injured
2016	KSU	Kansas State University
2017	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2018	kT	Kilotesla
2019	KTS	Knight of the Tower and Sword (of Portugal)
2020	KU	Kuwait (FIPS 10-4 country code)
2021	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2022	kV	Kilovolt
2023	KV	Kosovo
2024	kW	Kilowatt
2025	KW	Kuwait (ISO 3166 digram)
2026	KWB	Kids' WB!
2027	KWT	Kuwait (ISO 3166 trigram)
2028	KX	Cayman Airways (IATA airline designator)
2029	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2030	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2031	KZN	KwaZulu-Natal
2032	La	Lanthanum
2033	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2034	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2035	LAB	Logistics Assault Base
2036	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2037	LACMA	Los Angeles County Museum of Art
2038	LAD	Laser Aiming Device
2039	LADW	Local Air Defence Warning
2040	LAESI	Local Authority & Emergency Service Information
2041	LAN	Local Area Network
2042	LANL	Los Alamos National Laboratory
2043	LAO	Laos (ISO 3166 trigram)
2044	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2045	LARC	Livermore Advanced Research Computer (cf. LLNL)
2046	LARP	Live-Action Role-Playing
2047	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2048	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2049	LATA	Local Access Transport Area
2050	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2051	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2052	LAW	Light Antitank Weapon
2053	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2054	LB	Lebanon (ISO 3166 digram)
2055	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2056	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2057	LBN	Lebanon (ISO 3166 trigram)
2058	LBNL	Lawrence Berkeley National Laboratory
2059	LBR	Liberia (ISO 3166 trigram)
2060	LBS	Location-Based Services
2061	LBT	Large Binocular Telescope
2062	LBW	Leg Before Wicket
2063	LBY	Libya (ISO 3166 trigram)
2064	LCA	Saint Lucia (ISO 3166 trigram)
2065	LCC	Land Component Commander
2066	LCCP	Light Contingency Communications Package
2067	LCD	Liquid Crystal Display
2068	LCM	Least/Lowest Common Multiple
2069	LCS	League of Legends Championship Series
2070	LDA	Lateral Drift Apparatus (paratroops)
2071	LDC	Lesser Developing/Developed Country
2072	LDL	Low-Density Lipoprotein
2073	LDV	Local Defence Volunteers (British Home Guard)
2074	LDW	Lane Departure Warning (ADAS)
2075	LE	Lebanon (FIPS 10-4 country code)
2076	LEC	Local Exchange Carrier
2077	LED	Light-Emitting Diode
2078	LEGAD	Legal Advice
2079	Legs	level emotion gad speed
2080	LEMOSS	Long-Endurance MObile Submarine Simulator
2081	LEN	Large Extension Node
2082	LEP	Large Electron-Positron collider
2083	LER	Loss-Exchange Ratio
2084	LEU	Low-Enriched Uranium
2085	LF	Low Frequency
2086	LFO	Low Frequency Oscillation / Oscillator
2087	LFTR	Liquid fluoride thorium reactor
2088	LG	Latvia (FIPS 10-4 country code)
2089	LGM	Little Green Men
2090	LGS	Landsat Ground Station
2091	LHC	Large Hadron Collider
2092	LHS	Left Hand Side
2093	Li	Lithium
2094	LIBOR	London Interbank Offered Rate
2095	LIBS	Laser Induced Breakdown Spectroscopy
2096	LIE	Liechtenstein (ISO 3166 trigram)
2097	LIGO	Laser Interferometer Gravitational-Wave Observatory
2098	LINEAR	Lincoln Near-Earth Asteroid Research
2099	LISA	Laser Interferometer Space Antenna
2100	LIVE	Liquid Inertial Vibration Eliminator
2101	LJJ	Lord Justices of Appeal
2102	LK	Sri Lanka (ISO 3166 digram)
2103	LKA	Sri Lanka (ISO 3166 trigram)
2104	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2105	LLAD	Low Level Air Defence
2106	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2107	LLC	Limited Liability Company
2108	LLLTV	Low-Light Level Television
2109	LLNL	Lawrence Livermore National Laboratory
2110	LLP	Limited Liability Partnership
2111	LLTR	Low-Level Transit Route
2112	LMAO	Laughing My Ass Off (Internet shorthand)
2113	LMB	Lick My Balls
2114	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2115	LMN	Lifetime Movie Network
2116	LMS	Like My Status (Internet shorthand)
2117	LMV	() Light Motor Vehicle
2118	LNER	London and North Eastern Railway
2119	LNG	Liquefied Natural Gas
2120	LNO	Liaison Officer
2121	LO	Slovakia (FIPS 10-4 country code)
2122	LOA	Limit Of Advance
2123	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2124	LoD	Lines of Development (UK)
2125	LOFAR	Low Frequency Analysis and Recording
2126	LOGPAC	Logistics Package
2127	LOL	Laughing Out Loud (Internet shorthand)
2128	LOMEZ	Low Altitude Missile Engagement Zone
2129	LONEOS	Lowell Observatory Near-Earth-Object Search
2130	LORTID	LOng Range Target IDentification
2131	LOS	Line Of Sight
2132	LOSAT	Line-Of-Sight Anti-Tank (missile)
2133	LOTA	Licentiate of the Orthodontic Technicians Association
2134	LOTIS	Livermore Optical Transient Imaging System
2135	LOTS	Logistics Over-The-Shore
2136	LPC	Linear Predictive Coding
2137	LPG	Liquefied Petroleum Gas (cf. LNG)
2138	LPI	Low Probability of Intercept
2139	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2140	Lr	Lawrencium
2141	LR	Liberia (ISO 3166 digram)
2142	LRC	Logistics iness Center
2143	LRGW	Long-Range Guided Weapon
2144	LRICBM	Limited Range ICBM
2145	LRIP	Low Rate Initial Production
2146	LRP	Logistics Release Point
2147	LRPE	Long-Range Planning Element
2148	LRS	Long Range Surveillance
2149	LRU	Line-Replaceable Unit
2150	LSI	Large-Scale Integration
2151	LSIF	Labour Sponsored Investment Fund
2152	LSND	Liquid Scintillator Neutrino Detector
2153	LSO	Lesotho (ISO 3166 trigram)
2154	LSST	Large Synoptic Survey Telescope
2155	Lt	Lieutenant
2156	LtC	Lieutenant-Colonel (U.S.)
2157	LTC	Long-Term Costing
2158	Ltd	Limited
2159	LTDP	Long-Term Defence Plan
2160	LTI	Linear Time-Invariant
2161	LTM	Acronym for Laughing To Myself
2162	LTP	Long-Term Potentiation
2163	LTU	Lithuania (ISO 3166 trigram)
2164	LU	Acronym Love You
2165	LU	Loonatics Unleashed
2166	Lu	Lutetium
2167	LUCA	Last Universal Common Ancestor
2168	LUG	Linux User Group
2169	LULU	Locally Unwanted Land Use (urbanism)
2170	LUX	Luxembourg (ISO 3166 trigram)
2171	LVA	Latvia (ISO 3166 trigram)
2172	LVEF	Left Ventricular Ejection Fraction
2173	Lw	Lawrencium (obsolete 1963)
2174	LWR	Laser warning receiver
2175	LWRC	Land Warfare Resources Corporation
2176	LWS	Land Warrior System
2177	LX	Electrics (theatrical term)
2178	LYAO	Laugh Your Ass Off
2179	LYLAS	Love You Like A Sister
2180	Ma	Megaannum
2181	mA	Milliampere
2182	MAA	Mathematical Association of America
2183	MAAC	Metro Atlantic Athletic Conference
2184	MACE	Multi-Agent Computing Environment
2185	MACHO	MAssive Compact Halo Object
2186	MAF	Maintenance Action Form
2187	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2188	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2189	MAGTF	Marine Air-Ground Task Force
2190	MALD	Miniature Air-Launched Decoy
2191	MANPADS	MAN-Portable Air Defence System
2192	MANPRINT	MANpower and PeRsonnel INTegration
2193	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2194	MAOI	Monoamine oxidase inhibitor
2195	MAPS	Monitoring Avian Productivity and Survivorship
2196	MAR	Morocco (ISO 3166 trigram)
2197	MarBEF	Marine Biodiversity and Ecosystem Functioning
2198	MARCENT	United States Marine Forces Central Command
2199	MARFORCC	Marine Force Component Commander
2200	MASAS	Monte Agliale Supernovae and Asteroid Survey
2201	Maser	Microwave Amplification by Stimulated Emission of Radiation
2202	MASH	Mobile Army Surgical Hospital
2203	MASINT	Measurement And Signature Intelligence
2204	MAVS	Mobile Artillery Vehicle System
2205	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2206	MBCC	Migratory Bird Conservation Commission (U.S.)
2207	MBCS	Multi-Byte Character Set
2208	MBI	Moody Bible Institute
2209	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2210	MBM	Meat and Bone Meal
2211	MBT	Main Battle Tank
2212	MBTI	Myers-Briggs Type Indicator
2213	mC	Millicoulomb
2214	MCDL	Model Composition Definition Language
2215	MCFT	Modified Compression Field Theory
2216	MCG	Melbourne Cricket Ground
2217	MCIS	Mellon Collie and the Infinite Sadness
2218	MCM	Mine Counter-Measures
2219	MCMV	Mine Counter-Measure Vessel
2220	MCR	My Chemical Romance
2221	MCSF	Marine Corps Security Forces
2222	MCT	Movement Control Team
2223	MCTIS	Mounted Co-operative Target Identification System
2224	Md	Mendelevium
2225	MDNA	Madonna's 12th studio album title (2012)
2226	MDO	Membership Driven Organisation
2227	MDP	Markov Decision Process
2228	MDT	Mountain Daylight Time (UTC-6 hours)
2229	MDV	Maldives (ISO 3166 trigram)
2230	Me	Messerschmitt
2231	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2232	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)
2233	MEDEVAC	Medical evacuation
2234	MEDS	Mission Essential Data Set
2235	MEG	MagnetoEncephaloGraphy
2236	MELT	Metallic Line/Loop Test (ing)
2237	MEMS	Microelectromechanical System
2238	MER	Mars Exploration Rover
2239	MERL	Mitsubishi Electric Research Laboratories
2240	MES	Manufacturing Execution Systems
2241	METAR	[Meteorological] Aviation Routine weather report
2242	METOC	Meteorological and Oceanographic
2243	MeV	Megaelectronvolt
2244	MEX	Mexico (ISO 3166 trigram)
2245	MEZ	Missile Engagement Zone
2246	mF	Millifarad
2247	MGPAM	My Gym Partner's a Monkey
2248	MGS	Mobile Gun System
2249	mH	Millihenry
2250	MHC	Major Histocompatibility Complex
2251	MHHW	Mean Higher High Water (nautical charts)
2252	MHL	Marshall Islands (ISO 3166 trigram)
2253	MHLW	Mean Higher Low Water (nautical charts)
2254	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2255	MHW	Mean High Water (nautical charts)
2256	MHWN	Mean High Water Neaps (nautical charts)
2257	MHWS	Mean High Water Springs (nautical charts)
2258	MHz	Megahertz
2259	Mi	Mebi
2260	MIA	Missing In Action
2261	MICLIC	Mine Clearing Line Charge
2262	MICOM	Missile Command
2263	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2264	MIDAS	Man-machine Integration Design and Analysis System
2265	MIDI	Musical Instrument Digital Interface
2266	MIDS	Multi-Function Information Distribution System
2267	MIFG	Shallow Fog (METAR Code)
2268	MIKE	Monitoring of Illegal Killing of Elephants
2269	MIL	Man-In-the-Loop
2270	MILC	Mirrorless interchangeable-lens camera
2271	MILF	Mother I'd Like to Fuck
2272	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2273	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2274	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2275	MIRV	Multiple Independent Reentry Vehicle
2276	MISREP	Mission Report
2277	MISSI	Multilevel Information System Security Initiative
2278	MITL	Man-In-The-Loop
2279	MITS	see entry
2280	mJ	Millijoule
2281	MJD	Modified Julian Day
2282	mK	Millikelvin
2283	MKG	Michael Kidd-Gilchrist (American basketball player)
2284	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2285	mL	Millilitre
2286	MLB	Major League Baseball
2287	MLC	Member of the Legislative Council (in India)
2288	MLE	Maximum likelihood estimation
2289	MLHW	Mean Lower High Water (nautical charts)
2290	MLI	Mali (ISO 3166 trigram)
2291	MLL	Major League Lacrosse
2292	MLLW	Mean Lower Low Water (nautical charts)
2293	MLP	My Little Pony
2294	MLRS	Multiple-Launch Rocket System
2295	MLT	Malta (ISO 3166 trigram)
2296	MLW	Mean Low Water (nautical charts)
2297	MLWN	Mean Low Water Neaps (nautical charts)
2298	MLWS	Mean Low Water Springs (nautical charts)
2299	Mm	Megametre
2300	mm	Millimetre
2301	MMEV	Multi-Mission Effects Vehicle
2302	MMI	Magical MonkeyZ Inc.
2303	MMI	Man-Machine Interface
2304	MMI	McLean Meditation Institute
2305	MMIC	McLean Meditation Institute Certified
2306	MMO	Massively Multiplayer Online (computer game)
2307	MMOR	Master of Management in Operations Research
2308	MMORPG	Massively multiplayer online role-playing game
2309	MMPR	Mighty Morphin Power Rangers
2310	MMS	Multimission Modular Spacecraft
2311	Mn	Manganese
2312	mN	Millinewton
2313	MNB	Multinational Brigade
2314	MNE	Montenegro (ISO 3166 trigram)
2315	MNMF	Multi-National Maritime Force
2316	MNP	Northern Mariana Islands (ISO 3166 trigram)
2317	MNS	Mission Needs Statement
2318	Mo	Molybdenum
2319	MOA	Museum of Art (Brigham Young University)
2320	MOCAS	Mechanization Of Contract Administration Services
2321	MoD	Ministry of Defence (United Kingdom) and various other countries
2322	modem	Modulator-Demodulator
2323	Moe	Marvel of entertainment
2324	MOE	Measure Of Effectiveness
2325	MOF	Ministry of Finance (Japan)
2326	MOFA	Ministry of Foreign Affairs (Japan)
2327	MOID	Minimum Orbital Intersection Distance
2328	MOJWA	Movement for Oneness and Jihad in West Africa
2329	MOLO	Mobile Other Licensed Operator (UK)
2330	MOM	Master's Degree in Oriental medicine
2331	MOM	Message Oriented Middleware
2332	MoM	Multiple of the median
2333	MoMA	Museum of Modern Art (NYC)
2334	MOND	Modified Newtonian Dynamics
2335	MOO	Measure Of Outcome
2336	MOPP	Mission-Oriented Protective Posture
2337	MORP	Meteorite Observation and Recovery Project
2338	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2339	MOT	Ministry of Transport (UK)
2340	MOTA	Member of the Orthodontic Technicians Association
2341	MOTESS	Moving Object and Transient Event Search System
2342	MOU	Memorandum Of Understanding
2343	MOW	Maintenance of way (also MW)
2344	MOZ	Mozambique (ISO 3166 trigram)
2345	MPa	Megapascal
2346	mPa	Millipascal
2347	MPAA	Motion Picture Association of America
2348	MPEC	Minor Planet Electronic Circular
2349	MPEG	Motion Pictures (Coding) Experts Group
2350	MPEV	Multi-Purpose Engineering Vehicle
2351	MPF	Maritime Prepositioning Force
2352	MPFC	Medial PreFrontal Cortex
2353	MPG	Miles Per Gallon
2354	MPMC	Medial PreMotor Cortex
2355	MPSI	Member of the Pharmaceutical Society of Ireland
2356	MPSoC	MultiProcessor System-on-Chip
2357	MPSRON	Maritime Propositioning Ship Squadron
2358	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2359	MRAV	Multi-Role Armoured Vehicle
2360	MRBM	Medium Range Ballistic Missile
2361	MRC	Maintenance Requirements Card
2362	MRD	Motorized Rifle Division
2363	MRGW	Medium-Range Guided Weapon
2364	MRI	Magnetic Resonance Imaging
2365	MRL	Multiple Rocket Launcher
2366	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2367	MRS	Magnetic Resonance Spectroscopy
2368	MRSA	Methicillin-resistant Staphylococcus aureus
2369	MRTFB	U.S. Major Range and Test Facility Base
2370	Ms	Megasecond
2371	mS	Millisiemens
2372	MSD	Minimum Safe Distance
2373	MSDB	Multi Source Data Base
2374	MSE	Multiple Subscriber Element
2375	MSG	Message
2376	MSLP	Mean Sea Level Pressure
2377	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2378	MSO	Multiple System Operator
2379	MSPB	Merit Systems Protection Board
2380	MSSA	Methicillin-susceptible Staphylococcus aureus
2381	Mt	Meitnerium
2382	mT	Millitesla
2383	MTBF	Mean time between failures
2384	MtF	Male-to-female transsexual
2385	MTG	Magic: The Gathering
2386	MTQ	Martinique (ISO 3166 trigram)
2387	MTT	Methylthiazol tetrazolium (assay)
2388	MTWS	MAGTF Tactical Warfare System
2389	MUS	Mauritius (ISO 3166 trigram)
2390	mV	Millivolt
2391	MVC	Missouri Valley Conference
2392	MVFC	Missouri Valley Football Conference
2393	MVNO	Mobile virtual network operator
2394	mW	Milliwatt
2395	MWESH	Machismo Wizards Extended SHelter (operating system)
2396	MWI	Malawi (ISO 3166 trigram)
2397	MWOA	Mount Wilson Observatory Association
2398	MWTB	Mounted Warfare Test Bed
2399	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2400	MYOB	Mind Your Own Business
2401	MYS	Malaysia (ISO 3166 trigram)
2402	MYT	Mayotte (ISO 3166 trigram)
2403	n	Nano
2404	N3F	National Fantasy Fan Federation
2405	nA	Nanoampere
2406	Na	Sodium (Latin Natrium)
2407	NAA	N-Acetylaspartate
2408	NAAD	North American Air Defense
2409	NAAQS	National Ambient Air Quality Standards
2410	NAAWS	NATO Anti-Air Warfare System
2411	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2412	NACC	North Atlantic Cooperation Council
2413	NACISA	NATO Communications and Information Systems Agency
2414	NACMA	NATO Air Command and Control System Management Agency
2415	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2416	NAEC	U.S. Naval Air Engineering Center
2417	NAFERA	Native American Free Exercise of Religion Act
2418	NAFLD	NonAlcoholic Fatty Liver Disease
2419	NAFO	Northwest Atlantic Fisheries Organization
2420	NAFTA	North American Free Trade Agreement
2421	NAGPRA	Native American Graves Protection and Repatriation Act
2422	NAICS	North American Industry Classification System
2423	NAIL	Neurotics Anonymous
2424	NAILS	National Airspace Integrated Logistics System
2425	NAIRU	Non Accelerating Inflation Rate of Unemployment
2426	NAK	Negative Acknowledge
2427	NAM	Namibia (ISO 3166 trigram)
2428	NAMBLA	North American Man-Boy Love Association
2429	NAMRL	Naval Aerospace Medical Research Laboratory
2430	NaN	Not A Number (computing)
2431	NAO	UK National Audit Office
2432	NAPS	Navy Acquisition Procedures Supplement
2433	NARA	(U.S.) National Archives and Records Administration
2434	NARAL	National Abortion Rights Action League
2435	NARDAC	Naval Regional Data Automation Center
2436	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2437	NARPV	National Association for Remotely Piloted Vehicles
2438	NASCAR	National Association for Stock Car Auto Racing
2439	NASDAQ	National Association of Securities Dealers Automated Quotations
2440	NASED	National Association of State Election Directors [1][2]
2441	NASH	Non-Alcoholic Steatohepatitis
2442	NASP	National Aerospace Plane
2443	NASS	National Association of Secretaries of State [3]
2444	NatGeo	National Geographic
2445	NaUKMA	National University of Kyiv-Mohyla Academy
2446	NAV	Navigation[al]
2447	NAVCAMS	Naval Communications Area Master Station
2448	NAVCC	National Audio-Visual Conservation Center
2449	NAVCENT	Naval Forces U.S. Central Command
2450	NAVDAC	Naval Data Automation Command
2451	NAVEUR	Naval Forces U.S. European Command
2452	NAVFOR	Naval Force
2453	NAVMACS	Naval Modular Automatic Communication Subsystem
2454	NAVNET	Navy Network
2455	NAVS	Non-Cooperative Airborne Vector Scoring
2456	NAVSAT	Navigation Satellite
2457	NAVSPACECOM	U.S. Navy Space Command
2458	NAVSPASUR	U.S. Naval Space Surveillance System
2459	NAVSTAR	Navigation Satellite Timing And Ranging
2460	NAVTACNET	Navy Tactical Network
2461	NAWC	U.S. Naval Air Warfare Center
2462	Nb	Niobium
2463	NBA	National Basketball Association
2464	NBL	National Basketball League (Australia)
2465	NBT	Nitroblue tetrazolium (assay)
2466	nC	Nanocoulomb
2467	NCA	National Command Authority
2468	NCAR	U.S. National Center for Atmospheric Research
2469	NCB	National Codification Bureau
2470	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2471	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2472	NCDDR	U.S. National Center for the Dissemination of Disability Research
2473	NCI	U.S. National Cancer Institute
2474	NCL	New Caledonia (ISO 3166 trigram)
2475	NCLR	National Council of La Raza
2476	NCMO	No Commitment Make Out
2477	NCO	Non-Commissioned Officer
2478	NCP	Net Contracted Purchases
2479	NCR	National Cash Register Co.
2480	NCTR	Non-Co-operative Target Recognition
2481	NCW	Network Centric Warfare
2482	Nd	Neodymium
2483	NDAA	U.S. National Defense Authorization Act
2484	NDBP	Non-Departmental Public Body (Scotland)
2485	NDP	New Democratic Party (Canada)
2486	NDS	Nintendo DS
2487	Ne	Neon
2488	NECTEC	National Electronics and Computer Technology Center (Thailand)
2489	NEMS	National Energy Modeling System (USDOE-EIA)
2490	NEPA	National Environmental Policy Act
2491	NER	Niger (ISO 3166 trigram)
2492	NERICA	New Rice for Africa
2493	NESP	NSA/CSS Enterprise Standards Program
2494	NET	National Educational Television
2495	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2496	NETL	(US) National Energy Technology Laboratory
2497	NETWARS	Network Warfare Simulation
2498	NEX	Navy EXchange
2499	nF	Nanofarad
2500	NF	Norfolk Island (ISO 3166 digram)
2501	NFER	National Foundation for Educational Research
2502	NFG	No Fucking Good
2503	NFHS	National Federation of State High School Associations
2504	NFI	Not F****** Interested
2505	NFK	Norfolk Island (ISO 3166 trigram)
2506	Nfld	Newfoundland
2507	NFPA	National Fluid Power Association (United States)
2508	NFT	No Further Text
2509	NGATS	New Generation Army Targetry System
2510	NGH	Northern General Hospital
2511	NGO	non-governmental organization
2512	NGS	Naval Gunfire Support
2513	nH	Nanohenry
2514	NHANES	National Health and Nutrition Examination Survey
2515	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2516	NHB	No Holds Barred radio (Link)
2517	NHL	National Hockey League
2518	NHRA	National Hot Rod Association
2519	NHS	National Health Service (UK)
2520	Ni	Nickel
2521	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2522	NIAG	NATO Industrial Advisory Group
2523	NIAID	National Institute of Allergies and Infectious Disease
2524	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2525	NIB	New In Box (Internet auction/trading listings)
2526	NIBP	Non-invasive blood pressure monitor
2527	NicA	Nicotine Anonymous
2528	NICAP	National Investigations Committee on Aerial Phenomena
2529	NICE	UK. National Institute for Health and Clinical Excellence
2530	NICHD	National Institute of Child Health and Human Development [4]
2531	NICP	National Inventory Control Point
2532	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2533	NIDRR	National Institute on Disability Research and Rehabilitation
2534	NIEHS	National Institute of Environmental Health Sciences
2535	NIIN	National Item Identification Number
2536	NIMA	National Imagery and Mapping Agency (became NGA)
2537	NIMBY	Not In My Back Yard (See NOME)
2538	NIMG	Not In My Generation
2539	NIN	Nine Inch Nails (band)
2540	NIPR	National Institute of Polar Research (Japan)
2541	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2542	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2543	NISCAP	NSA Information System Certification and Accreditation Program
2544	NISER	National Institute of Science Education and Research
2545	NIST	National Institute of Standards and Technology
2546	NITFS	National Imagery Transmission Format Standard
2547	NIU	Niue (ISO 3166 trigram)
2548	nJ	Nanojoule
2549	NJ	New Jersey (postal symbol)
2550	NJHS	National Junior Honor Society
2551	NJPW	New Japan Pro Wrestling
2552	nK	Nanokelvin
2553	NKA	No Known Allergies
2554	nL	Nanolitre
2555	NLB	Non-Linear Battlefield
2556	NLD	Netherlands (ISO 3166 trigram)
2557	NLF	National Liberation Front (disambiguation)
2558	NLL	National Lacrosse League
2559	NLW	Non-Lethal Weapon
2560	nm	Nanometre
2561	NM	New Mexico (postal symbol)
2562	NMCI	Navy Marine Corps Intranet
2563	NMCS	Not Mission Capable Supply (SM&R code)
2564	NMD	U.S. National Missile Defense
2565	NMN	No middle name
2566	NMR	Nuclear Magnetic Resonance
2567	NMSG	NATO Modelling and Simulation Group
2568	nN	Nanonewton
2569	NNE	North North-East
2570	NNSA	U.S. National Nuclear Security Administration
2571	NNW	North North-West
2572	No	Nobelium
2573	NOAA	U.S. National Oceanic and Atmospheric Administration
2574	NOAF	Norwegian Air Force
2575	NOAO	National Optical Astronomy Observatory
2576	NOC	UK. National Oceanography Centre
2577	NODEF	NATO Oceanographic Data Exchange Format
2578	NOGI	New Orleans Grande Isle (award for diving)
2579	NOLF	Navy OutLying Field
2580	NOME	Not on Mars Either
2581	NOME	Not on Mars Either (see NIMBY)
2582	NOR	Norway (ISO 3166 trigram)
2583	NORELPREF	No religious preference
2584	NORTHAG	Northern Army Group
2585	NOSA	NATO OSI Security Architecture
2586	NOTAFLOF	No One Turned Away For Lack Of Funds
2587	NOW	National Organization for Women
2588	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2589	NPB	Nippon Professional Baseball
2590	NPCS	Non-Passenger Coaching stock (in Railways)
2591	NPD	Nationaldemokratische Partei Deutschlands (German)
2592	NPDI	New Product Development and Introduction
2593	NPG	Needline/Network Participation Group
2594	NPH	Normal Pressure Hydrocephalus
2595	NPO	nothing by mouth
2596	NPOV	Neutral Point Of View
2597	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2598	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2599	NRA	National Rifle Association
2600	NRAO	National Radio Astronomy Observatory
2601	NRDC	(U.S.) Natural Resources Defense Council
2602	NREL	U.S. National Renewable Energy Laboratory
2603	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2604	NRMP	National Resident Matching Program (U.S. medicine)
2605	NRO	U.S. National Reconnaissance Office
2606	NRT	Near Real Time
2607	NRU	Nauru (ISO 3166 trigram)
2608	ns	Nanosecond
2609	nS	Nanosiemens
2610	NSABB	National Science Advisory Board for Biosecurity
2611	NSAID	Non-Steroidal Anti-Inflammatory Drug
2612	NSB	Norges Statsbaner (Norwegian State Railways)
2613	NSC	National Security Council
2614	NSDL	National Science Digital Library (US)
2615	NSG	National System for Geospatial-Intelligence
2616	NSN	National Stock Number
2617	NSNA	National Student Nurses' Association
2618	NSO	National Standardization Office (ABCA)
2619	NSS	(U.S.) Naval Simulation System
2620	NST	(UK) Nimrod Software Team
2621	NSTAC	National Security Telecommunications Advisory Committee
2622	NSW	New South Wales (postal symbol)
2623	nT	Nanotesla
2624	NTDS	Naval Tactical Data System
2625	NTP	Network Time Protocol
2626	NTR	Network Time Reference
2627	NTRA	National Thoroughbred Racing Association
2628	NTSB	National Transportation Safety Board
2629	NTV	Non-Tactical Vehicle
2630	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2631	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2632	NUTS	Nuclear Utilization Target Selection
2633	NUWC	U.S. Naval Undersea Warfare Center
2634	nV	Nanovolt
2635	NVEOL	Night Vision and Electro-Optics Laboratory
2636	NVG	Night Vision Goggles
2637	NVL	Night Vision Laboratory
2638	nW	Nanowatt
2639	NW	North-West
2640	NW	Nuclear Weapon
2641	NWA	National Wrestling Alliance
2642	NWF	National Wildlife Federation
2643	NWFZ	Nuclear-Weapon-Free Zone
2644	NWHN	U.S. National Women's Health Network
2645	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2646	NWOAHM	New Wave of American Heavy Metal
2647	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2648	NWRA	National Wildlife Rehabilitators Association
2649	NWSL	National Women's Soccer League (U.S.)
2650	NWT	North-West Territories
2651	NXA	21st arcade game in the Pump It Up series
2652	NXD	Native XML
2653	NXE	New Xbox Experience
2654	NXG	New Cross Gate station
2655	NXL	National XBall League
2656	NXN	Nike Cross Nationals
2657	NY	New York (postal symbol)
2658	NYC	New York City
2659	NYHA	New York Heart Association
2660	NYO	National Youth Orchestra of Great Britain
2661	NYSE	New York Stock Exchange
2662	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2663	NZC	New Zealand Cricket
2664	NZL	New Zealand (ISO 3166 trigram)
2665	NzL	Noze looan (online/event listings)
2666	NZOSS	New Zealand Open Source Society
2667	NZRU	New Zealand Rugby Union
2668	OAC	On Approved Credit
2669	OAP	Old Age Pensioner (UK)
2670	OARSI	Osteoarthritis Research Society International
2671	OAS	Organization of American States
2672	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2673	OASIS	Ontario Association of Sewage Industry Services
2674	OASP	Operational Analysis Support Paper/Plan
2675	OAU	Organization for African Unity
2676	OBE	Officer of the Order of the British Empire
2677	OBX	Outer Banks (North Carolina)
2678	OC	Officer Commanding
2679	OCD	Obsessive-Compulsive Disorder
2680	OCFS	Oracle Cluster File System
2681	OCFS2	Oracle Cluster File System Release 2
2682	OCMCC	[2] Orchard County MCC
2683	OCN	Oncology Certified Nurse
2684	OCO	Oort Cloud Object
2685	OCR	Optical Character Recognition
2686	OCS	see entry
2687	ODAS	OCA-DLR Asteroid Survey
2688	ODBC	Open DataBase Connectivity
2689	OEA	(U.S.) Office of Economic Adjustment
2690	OECD	Organisation for Economic Co-operation and Development (international)
2691	OED	Oxford English Dictionary
2692	OEG	Operation Exposure Guidance
2693	OEIS	On-Line Encyclopedia of Integer Sequences
2694	OEM	Original Equipment Manufacturer
2695	OFA	Occipital Face Area
2696	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2697	OGC	Open Geospatial Consortium
2698	OGD	Other Government Department
2699	OGO	Other Government Organization
2700	OH	Ohio (postal symbol)
2701	OHC	OverHead-Cam engine
2702	OHHLA	Original Hip-Hop Lyrics Archive
2703	OHIP	Ontario Health Insurance Plan
2704	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2705	OHP	Observatoire de Haute-Provence
2706	OHSS	Ovarian Hyperstimulation Syndrome
2707	OIC	Officer In Charge
2708	OIF	Operation Iraqi Freedom
2709	OIOC	Oriental & India Office Collections (in the British Library)
2710	OJT	On-the-Job Training
2711	OKC	Oklahoma City
2712	OLED	Organic Light-Emitting Diode
2713	OLS	Operational Linescan System
2714	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2715	OME	Osaka Mercantile Exchange
2716	OMFG	Oh My Fucking God
2717	OMG	Oh My God or Or My Gosh
2718	OMGW	Oh My Gosh it's Windy
2719	OMN	Oman (ISO 3166 trigram)
2720	OMNCS	U.S. Office of the Manager for the National Communications System
2721	OMP	Order of Mapungubwe in Platinum
2722	OMS	Order of Mapungubwe in Silver
2723	OMT	Object Model Template
2724	ON	Ontario (postal symbol)
2725	ONC	Orthopaedic Nurse Certified
2726	ONG	Orthodontic National Group
2727	ONI	(U.S.) Office of Naval Intelligence
2728	ONS	Operational Needs Statement
2729	OOAD	Object Oriented Analysis and Design
2730	OOBE	Out-of-body experience
2731	OOCL	Orient Overseas Container Line
2732	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2733	OOF	Out of Facility
2734	OOMF	One Of My Followers
2735	OOO	Out Of the Office
2736	OOTW	Operations Other Than War
2737	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
2738	OPAC	Online Public Access Catalogue
2739	OPCON	Operational control
2740	OPCW	Organisation for the Prohibition of Chemical Weapons
2741	OPEC	Organization of the Petroleum Exporting Countries
2742	OPFOR	Opposing force
2743	OPINTEL	Operational Intelligence
2744	OPLAN	Operation plan (also OpPlan)
2745	OPORD	Operation order
2746	OPSEC	Operations security,Open Platform for Security
2747	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2748	OPTAR	Operational target
2749	OPV	Offshore Patrol Vessel
2750	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)
2751	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
2752	ORAU	Oak Ridge Associated Universities
2753	ORB	Object Request Broker
2754	ORBAT	Order of Battle
2755	ORD	Office of Research and Development,Operational Requirements Document
2756	ORF	Operational iness Float
2757	ORISE	Oak Ridge Institute for Science and Education
2758	ORNL	Oak Ridge National Laboratory
2759	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
2760	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2761	OS	Operating System
2762	Os	Osmium
2763	OSA	Order of St. Augustine
2764	OSCE	Organisation for Security and Cooperation in Europe
2765	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2766	OSDL	Open Source Development Labs
2767	OSE	Own Separate Entrance
2768	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2769	OSETI	Optical SETI also Optical SETI
2770	OSHA	Occupational Safety and Health Administration
2771	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2772	OSIA	(U.S.) On-Site Inspection Agency
2773	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)
2774	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2775	OSM	One Saturday Morning
2776	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2777	OSPA	Operations Security Professional's Association site of OSPA
2778	OSPA	Oregon School Psychologists Association [3]
2779	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2780	OSU	Ohio State University,Oklahoma State University
2781	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2782	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2783	OTC	Over-The-Counter (drugs)
2784	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2785	OTEA	(U.S. Army) Operational Test Evaluation Agency
2786	OTI	Office of Transition Initiatives (United States Agency for International Development)
2787	OTOH	On The Other Hand
2788	OTS	Off the scale,sexually untouchable except for a lot of money
2789	OTSBH	Over The Shoulder Boulder Holder
2790	OTW	On The Way
2791	OTYBL	Over To You Blue Leader
2792	OTYRL	Over To You Red Leader
2793	OU	University of Oklahoma
2794	OW	Old Wykehamist
2795	OWN	Oprah Winfrey Network
2796	OX	IATA code for Orient Thai Airlines
2797	OXC	Optical cross-connect
2798	OXM	Official Xbox Magazine
2799	OXT	Oxytocin
2800	OZ	(?) Australia
2801	p	pico
2802	P2P	Peer-to-peer (networking)
2803	pA	picoampere
2804	PAA	Position Area for Artillery
2805	PABX	Private Automated Branch eXchange (company phone system)
2806	PACOM	(U.S.) Pacific Command
2807	PADI	Professional Association of Diving Instructors
2808	PAEK	PolyArylEtherKetone
2809	PAFC	Plymouth Argyle Football Club
2810	PAH	Polycyclic aromatic hydrocarbon
2811	PAHO	Pan American Health Organization
2812	PAK	Pakistan (ISO 3166 trigram)
2813	PAM	Precision Attack Missile
2814	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2815	PARC	Palo Alto Research Center
2816	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2817	PARP	(NATO Partnership for Peace) Planning And Review Process
2818	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2819	PAS	See entry
2820	PASR	Personnel Accounting and Strength Reporting
2821	PATH	Port Authority Trans-Hudson
2822	PAYD	Pay As You Drive
2823	PAYE	Pay As You Earn
2824	Pb	Lead (Latin Plumbum)
2825	PB	PolyButylene
2826	PBB	PolyBrominated Biphenyl
2827	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2828	PBD	PolyButaDiene
2829	PBDE	PolyBrominated Diphenyl Ether
2830	PBI	PolyBenzImidazole
2831	PBN	PolyButylene Naphthalate
2832	PBOH	Please Become Old History
2833	PBT	PolyButylene Terephthalate
2834	PBX	Private Branch eXchange (company phone system)
2835	pC	picocoulomb
2836	PCAS	Planet-Crossing Asteroid Survey
2837	PCB	see entry
2838	PCCB	Porsche Ceramic Composite Brake
2839	PCCIP	President's Commission on Critical Infrastructure Protection
2840	PCE	PerChlorEthylene
2841	PCIe	Peripheral Component Interconnect Express (computer bus)
2842	PCL	Passive Coherent Location
2843	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2844	PCN	Pitcairn Islands (ISO 3166 trigram)
2845	PCPI	Physician Consortium for Performance Improvement (AMA)
2846	PCR	Polymerase chain reaction
2847	PCSSD	Pulaski County Special School District
2848	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2849	Pd	Palladium
2850	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2851	PDL	Pure Dumb Luck (Texan punk band)
2852	PDN	Pull-Down Network
2853	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2854	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2855	PE	Professional Engineer
2856	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2857	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2858	PEEK	PolyEtherEtherKetone
2859	PEET	Partnerships for Enhancing Expertise in Taxonomy
2860	PEK	PolyEtherKetone
2861	PEPFAR	President's Emergency Plan For AIDS Relief
2862	PER	Peru (ISO 3166 trigram)
2863	perl	usually lower case Practical Extraction and Report Language
2864	PES	PolyEtherSulfone
2865	PEST	UK Public Engagement with Science and Technology
2866	PETE	PolyEthyleneTErephthalate
2867	PETP	PolyEthyleneTerePhthalate
2868	pF	picofarad
2869	PFD	Permanent Fund Dividend = personal flotation device
2870	PFE	Permanent Forest Estate
2871	PfP	Partnership for Peace
2872	Pg	petagram
2873	pg	picogram
2874	PGCE	Postgraduate Certificate in Education
2875	PGD	Pre-implantation Genetic Diagnosis
2876	PGENI	Pharmaco-Genetics for Every Nation Initiative
2877	PGH	Pre-implantation Genetic Haplotyping
2878	PGM	Precision-Guided Munition
2879	PGP	Pretty Good Privacy
2880	PHL	Philippines (ISO 3166 trigram)
2881	PHQ	Patient Health Questionnaire
2882	Pi	Pebi
2883	PIB	PolyIsoButylene
2884	PIC	Person In Charge
2885	PICNIC	Problem In Chair Not In Computer
2886	PICS	Private Investment Capital Subscription
2887	PIF	Partners in Flight
2888	PIG	Pipeline Inspection Gauge
2889	PIN	Personal Identification Number
2890	PINF	People In Need Foundation (Czech charitable organisation)
2891	PIPA	Program on International Policy Attitudes
2892	PIR	Priority Intelligence Requirement
2893	PIRA	Provisional Irish Republican Army
2894	PIREPS	Pilot Reports
2895	PITA	Pain In The Ass
2896	PJ	petajoule
2897	pJ	picojoule
2898	PJHQ	Permanent Joint Headquarters
2899	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2900	PKI	Public Key Infrastructure (cryptography)
2901	PKU	Phenylketonuria
2902	pL	picolitre
2903	PLAID	Precision Location and Identification
2904	PLB	Personal Locator Beacon
2905	PLC	Public Limited Company (British)
2906	PLCC	Plastic Leaded Chip Carrier (electronics)
2907	PLD	Probable Line of Deployment
2908	PLEBS	People Lacking Everyday Basic Skills
2909	PLF	Parachute Landing Fall
2910	PLIF	Planar Laser-Induced Fluorescence
2911	PLL	Phase-Locked Loop (electronics)
2912	PLM	Polarized Light Microscope/Microscopy
2913	PLMBA	Phospholipid Bilayer Microarray
2914	Pln	Platoon
2915	PLO	Palestine Liberation Organization
2916	PLOKTA	Press Lots Of Keys To Abort
2917	PLP	Platonic Life Partner
2918	PLUTO	Pipe Line Under The Ocean
2919	PLW	Palau (ISO 3166 trigram)
2920	pm	picometre
2921	PMC	Primary Motor Cortex
2922	PMI	Positive Material Identification
2923	PMID	PubMed Identifier
2924	PMMA	PolyMethylMethAcrylate
2925	PMS	Premenstrual Syndrome
2926	PMSL	Piss Myself Laughing (Internet shorthand)
2927	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
2928	pN	piconewton
2929	PNAC	Project for the New American Century
2930	PNVS	Pilot Night Vision Sensor
2931	Po	Polonium
2932	PO	Post Office
2933	PO	Purchase Order
2934	POCD	Post-Operative Cognitive Dysfunction
2935	pod	Plain Old Documentation
2936	POFF	Plain Old Flat File
2937	POGO	Project On Government Oversight
2938	POI	Program Of Instruction
2939	POK	Plane Of Knowledge
2940	POLAD	Political Advice
2941	POMDP	Partially observable Markov decision process
2942	PooS	Poo Sniffer (Internet shorthand)
2943	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
2944	POSH	Port Outbound Starboard Home (alleged)
2945	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
2946	POT	Plane Of Tranquility
2947	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
2948	POTUS	President of the United States
2949	POV	Point of view
2950	POW	Prisoner of war
2951	PPASC	(U.S.) Plans and Program Analysis Support Center
2952	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
2953	PPLI	Precise Participant Location & Identification
2954	PPM	Project Planning and Management
2955	PPO	PolyPhenylene Oxide
2956	PPQN	Pulses Per Quarter Note (ditto)
2957	PPQT	Pre-Production Qualification Test
2958	PPV	Pay-per-view
2959	Pr	Pastor, Priest
2960	PR	Public Relations
2961	Prb	Presbyter
2962	PRBO	Point Reyes Bird Observatory
2963	PRC	People's Republic of China
2964	PRD	CERDEC Product Realization Directorate
2965	PRFG	Partial Fog (METAR Code)
2966	PRI	Puerto Rico (ISO 3166 trigram)
2967	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
2968	PRM	Personnel iness Management
2969	PRY	Paraguay (ISO 3166 trigram)
2970	Ps	petasecond
2971	pS	picosiemens
2972	PSG	Pacific Seabird Group
2973	PSI	Portable Source Initiative
2974	PSI	Pounds per square inch
2975	PSS	Personnel System Support
2976	PST	Pacific Standard Time (UTC-8 hours)
2977	PSU	Pennsylvania State University
2978	PsyOp	Psychological Operations
2979	pT	picotesla
2980	Pt	Platinum
2981	PTA	Parent-Teacher Association
2982	PTAL	Public Transport Accessibility Level
2983	PTES	People's Trust for Endangered Species
2984	PTFE	PolyTetraFluoroEthylene
2985	PTI	Pardon the Interruption
2986	PTSD	Post-Traumatic Stress Disorder
2987	Pu	Plutonium
2988	Pub	Publication
2989	PUG	PET Users Group
2990	PUN	Pull-Up Network
2991	PUP	Pull-Up Point
2992	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
2993	PV	petavolt
2994	pV	picovolt
2995	PvE	Player versus Environment
2996	PvP	Player versus Player
2997	PVR	Personal Video Recorder
2998	PvZ	Plants vs. Zombies
2999	PW	Palau (postal symbol; ISO 3166 digram)
3000	pW	picowatt
3001	PWA	Pirates With Attitude
3002	PWBA	Pension and Welfare Benefits Administration
3003	PWC	PieceWise Constant (describing a mathematical function)
3004	PwC	PricewaterhouseCoopers (international accounting firm)
3005	PWL	PieceWise Linear (describing a mathematical function)
3006	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3007	PWR	Pressurized Water Reactor
3008	PX	Post eXchange
3009	PYF	French Polynesia (ISO 3166 trigram)
3010	PYMWYMI	Put Your Money Where Your Mouth Is
3011	Q1	First Quarter
3012	Q2	Second Quarter
3013	Q3	Third Quarter
3014	Q4	Fourth Quarter
3015	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
3016	Qantas	Queensland And Northern Territory Aerial Services
3017	QAT	Qatar (ISO 3166 trigram)
3018	QB	Quarterback (football)
3019	QCD	Quantum ChromoDynamics
3020	QDR	Quadrennial Defense Review
3021	QEH	Queen Elizabeth's Hospital
3022	QK	Air Canada Jazz (IATA airline designator)
3023	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3024	QPS	Quark Publishing System
3025	QSCAT	Quick Scatterometer satellite
3026	QSL	Québec Sign Language
3027	QSO	Quasi-Stellar Object
3028	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3029	Quasar	Quasi-stellar radio source
3030	QUB	Queen's University Belfast
3031	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3032	QZ	Awair (IATA airline designator)
3033	R2I	Resistance to Interrogation
3034	RA	Radio Australia
3035	Ra	Radium
3036	RAAF	Royal Australian Air Force
3037	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3038	RACK	Risk Aware Consensual Kink (SM phrase)
3039	Racon	RAdar beaCON
3040	RADA	Royal Academy of Dramatic Art
3041	Radar	Radio Detection And Ranging
3042	RadB	Rad51/Dmc1 homologous protein
3043	RADb	Routing Assets Data Base
3044	RADC	Region Air Defence Commander
3045	RAE	UK Royal Aircraft Establishment (-1991)
3046	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3047	RAM	Royal Air Maroc
3048	Ramark	RAdar MARKer
3049	RAOC	Rear Area Operation Centre
3050	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3051	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3052	RATELO	Radiotelephone Operator
3053	Rb	Rubidium
3054	RB	Running Back (football)
3055	RBI	Runs Batted In
3056	RC	see entry
3057	RCAF	Royal Canadian Air Force
3058	RCC	Rescue Co-ordination Centre
3059	RCCO	Royal Canadian College of Organists
3060	RCHA	Royal Canadian Horse Artillery (regiment)
3061	RCMP	Royal Canadian Mounted Police
3062	RD	Radio Disney
3063	RDD	Radiological Dispersion Device
3064	RDM	Remotely Delivered/Deliverable Mine
3065	RDT	Remote Digital Terminal
3066	RDV	Remote Detection Vehicle
3067	Re	Rhenium
3068	RE	Royal Engineers
3069	REACT	Remote Electronically Activated Control Technology
3070	REAM	Retired Educators Association of Minnesota
3071	RECCE	Reconnaissance
3072	REEF	Reef Environmental Education Foundation
3073	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3074	REME	Royal Electrical and Mechanical Engineers
3075	RERC	Rehabilitation Engineering Research Center
3076	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3077	REU	Réunion (ISO 3166 trigram)
3078	Rf	Rutherfordium
3079	RFD	Request for Documentation
3080	RFE	Request for Evaluation
3081	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3082	RFF	Right of First Refusal (legal term)
3083	RFID	Radio Frequency IDentification
3084	RFL	Rugby Football League
3085	RFP	Request for Proposal
3086	RFQ	Request for Quotation
3087	RFT	Request for Tender
3088	RFU	Rugby Football Union
3089	RG	Republican Guard
3090	Rg	Roentgenium
3091	RGB	Red Green Blue (colour model)
3092	RGBI	Red Green Blue Intensity (ditto)
3093	Rh	Rhodium
3094	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3095	RHIC	Relativistic Heavy Ion Collider
3096	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3097	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3098	RHU	Replacement Holding Unit
3099	RI	Rhode Island (postal symbol)
3100	RIAA	Recording Industry Association of America
3101	RIBA	Royal Institute of British Architects
3102	RIFA	Red imported fire ant
3103	RILA	Retail Industry Leaders Association
3104	RIMVS	Retinal Imaging Machine Vision System
3105	RINO	Republican In Name Only[1]
3106	RISC	Reduced Instruction Set Computer
3107	RJD	Reduced Julian Day
3108	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3109	RKO	Radio-Keith-Orpheum Pictures
3110	RLP	Recognised [Operating/Operational] Land Picture
3111	RLS	Restless Leg Syndrome
3112	RLY	Rally Point
3113	RM	see separate disambiguation page
3114	RMC	Robert Menzies College
3115	RMDA	Records Management and Declassification Agency
3116	RMP	Recognised [Operating/Operational] Maritime Picture
3117	RN	Radio Netherlands
3118	Rn	Radon
3119	RNA	RiboNucleic Acid
3120	RNAD	Royal Naval Armaments Depot (UK)
3121	RNPS	Radio Network Planning System
3122	RNZ	Radio New Zealand
3123	RNZI	Radio New Zealand International
3124	ROA	Rate Of Ascent
3125	ROE	Rules Of Engagement
3126	ROFLOL	Rolling On the Floor Laughing Out Loud
3127	ROH	Ring of Honor
3128	ROK	Republic of Korea
3129	ROP	Render Output Pipeline
3130	ROPE	Research Opportunity and Performance Evidence
3131	ROS	Reactive Oxygen Species
3132	ROU	Romania (ISO 3166 trigram)
3133	ROV	Remotely Operated Vehicle
3134	ROZ	Restricted Operations Zone
3135	RPA	Regional Plan Association
3136	RPD	Recognition-Primed Decision-making
3137	RPF	Rwandan Patriotic Front
3138	RPL	Reverse Polish Lisp
3139	rpm	revolutions per minute
3140	RPN	reverse Polish notation
3141	rps	revolutions per second
3142	RPV	Remotely Piloted Vehicle
3143	RQ	Puerto Rico (FIPS 10-4 territory code)
3144	RRB	Railroad Retirement Board
3145	RRN	Recurrence Rate Number
3146	RRP	Recurrent Respiratory Papillomatosis
3147	RRS	Racing Rules of Sailing
3148	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3149	RS	Russia (FIPS 10-4 country code)
3150	RSI	Repetitive Strain Injury
3151	RSJ	Rolled Steel Joist (construction)
3152	RSN	Real Soon Now (coined by author Jerry Pournelle)
3153	RSPB	(UK) Royal Society for the Protection of Birds
3154	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3155	RSR	Required Supply Rate
3156	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3157	RSRI	Red Sands Research Institute
3158	RSS	Really Simple Syndication
3159	RTA	Road traffic accident (British)
3160	RTBF	Radio-Télévision belge de la Communauté française
3161	RTF	Rich Text Format
3162	RTFM	the Fucking/Fine Manual
3163	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3164	RTI	Run-Time Infrastructure (Simulation)
3165	RTL	see entry
3166	RTP	Real-time Transport Protocol
3167	RTS	see entry
3168	RTT	Round Trip Timing
3169	RU	Russia (ISO 3166 digram)
3170	Ru	Ruthenium
3171	RUC	Royal Ulster Constabulary
3172	RUS	Russia (ISO 3166 trigram)
3173	RUSI	Royal United Services Institute for Defence Studies
3174	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3175	RWA	Rwanda (ISO 3166 trigram)
3176	RWH	Rain Water Harvesting
3177	RWR	Radar Warning Receiver
3178	RWS	Remote Weapon Station
3179	RX	Receive
3180	SBNO	Standing but not operating (in reference to amusement parks)
3181	SCOTUS	Supreme Court of the United States
3182	SCROTUS	So-called Ruler of the United States
3183	SDHC	Secure Digital High Capacity
3184	SDXC	Secure Digital eXtended Capacity
3185	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3186	SGOTUS	Second Gentleman of the United States
3187	SHO	Showtime (see also sho.com)
3188	SIRI	Service Interface for Real Time Information
3189	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3190	SLOTUS	Second Lady of the United States (the vice president's wife)
3191	SoCon	Southern Conference (U.S. college sports)
3192	STB	Surface Transportation Board[2]
3193	SWAC	Southwestern Athletic Conference
3194	SWAN	System for Wearable Audio Navigation
3195	SWAT	Special Weapons And Tactics
3196	SWF	Single White Female
3197	Ta	Tantalum
3198	TAACOM	U.S. Theater Army Area Command
3199	TAADCOORD	Theatre Army Air Defence Co-ordinator
3200	TAAR	Trace Amine-Associated Receptor
3201	TAC	U.S. Tactical Air Command (1946-1992)
3202	TACAN	Tactical Air Navigation
3203	TACCO	Tactical Coordinator
3204	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3205	TACDAR	Tactical Detection And Reporting
3206	TACSOP	Tactical SOP (Standing Operating Procedure)
3207	TADIL	Tactical Digital Information Link
3208	TAI	Target[ed] Area of Interest
3209	TAJ	Tom and Jerry
3210	TAJT	Tom and Jerry Tales
3211	TALES	Technical Advice and Lexicon for Enabling Simulation
3212	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3213	TANP	Terrain-Aware Network Planner
3214	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)
3215	TAPPS	Texas Association of Private and Parochial Schools
3216	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3217	TAS	Tasmania (postal symbol)
3218	TASER	Thomas A. Swift's Electric Rifle
3219	TASM	Tactical Air-to-Surface Missile
3220	TAT	Tourism Authority of Thailand
3221	TATP	TriAcetone TriPeroxide
3222	TATT	Tired All The Time (medical diagnosis in-joke)
3223	Tb	Terbium
3224	TB	Tuberculosis
3225	TBA	to be announced
3226	TBBPA	TetraBromoBisPhenol-A
3227	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3228	TBF	to be fair
3229	TBH	To Be Honest
3230	TBL	Turkish Basketball League
3231	TBS	Turner Broadcasting System
3232	TBT	Tributyltin
3233	Tc	Technetium
3234	TCAA	Top Counter-Assault Agents
3235	TCAS	Traffic Collision Avoidance System
3236	TCCCS	Tactical Command,Control and Communication System
3237	TCD	Chad (ISO 3166 trigram)
3238	TCHD	Truck Cargo Heavy Duty
3239	TCL	Tool Command Language
3240	TCM	Turner Classic Movies
3241	TCU	Texas Christian University
3242	TCW	Tasty Coma Wife
3243	TCWMS	Tele-Center Workforce Management System
3244	TDA	The Disney Afternoon
3245	TDL	Tactical Data Link
3246	TDM	Time-Division Multiplexing
3247	TDMA	Time Division Multiple Access
3248	TDP	Technology Demonstration Programme
3249	TDRS	Tracking Data and Relay Satellite
3250	Te	Tellurium
3251	TEAL	Tasman Empire Airways Limited
3252	Team	Together everyone achieves more
3253	TEAMS	The East African Marine System (fiber optic cable)
3254	TED	Technology Entertainment Design prize
3255	TENCAP	Tactical Exploitation of National Capabilities
3256	TERS	Tactical Event Reporting System
3257	TES	Tactical Event System
3258	TEST	Thesaurus of Engineering and Scientific Terms
3259	TEU	Twenty-foot equivalent unit (cargo capacity)
3260	TeVeS	Tensor Vector Scalar theory
3261	TFMPP	Trifluorophenylmethylpiperazine
3262	TFR	Total Fertility Rate
3263	TFT	Thin-Film Transistor
3264	Tg	Teragram
3265	TG	Togo (ISO 3166 digram)
3266	TGO	Togo (ISO 3166 trigram)
3267	Th	Thorium
3268	THA	Thailand (ISO 3166 trigram)
3269	THAAD	Terminal High Altitude Area Defence
3270	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3271	THEL	Tactical High Energy Laser ACTD
3272	THG	Tetrahydrogestrinone
3273	TIA	Total Information Awareness initiative
3274	TIA	Transient Ischemic Attack
3275	TIALD	Thermal Imaging and Airborne Laser Designation
3276	TIBS	Tactical Information Broadcast System
3277	TIC	Troops In Contact
3278	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3279	TINC	There Is No Cabal
3280	TIP	Thermal Identification Panel
3281	tits	Toes in the Sand
3282	TJD	Truncated Julian Day
3283	TJK	Tajikistan (ISO 3166 trigram)
3284	TKL	Tokelau (ISO 3166 trigram)
3285	TKM	Turkmenistan (ISO 3166 trigram)
3286	Tl	Thallium
3287	TLA	Three-Letter Abbreviation/Acronym
3288	TLAM	Tomahawk Land Attack Missile
3289	TLATOJL	The Life and Times of Juniper Lee
3290	TLPM	T1 Line Performance Monitor
3291	Tm	Terametre
3292	TMAP	Texas Medication Algorithm Project
3293	TMC	The Movie Channel
3294	TMD	Theatre Missile Defence
3295	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3296	TMI	Too Much Information
3297	TMJ	TemporoMandibular Joint (syndrome)
3298	TMNT	Teenage Mutant Ninja Turtles
3299	TMPG	Transparent Multi-Platform Gateway
3300	TMR	Twin Main Rotors (helicopter type)
3301	TMS	Transcranial Magnetic Stimulation
3302	TMT	Thirty Meter Telescope
3303	TMTOWTDI	There's Than One Way To Do It (from Perl)
3304	TNA	Total Nonstop Action Wrestling
3305	TNO	Trans-Neptunian Object
3306	TOBS	Time of OBServation
3307	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3308	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3309	TOGS	Thermal Observation Gunnery Sight
3310	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3311	TON	Tonga (ISO 3166 trigram)
3312	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
3313	TOT	Time On Target
3314	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3315	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3316	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3317	TPI	The point is
3318	TPO	Thrombopoietin
3319	TPS	The Pennington School
3320	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3321	TQ	Top Qualifier (similar to Pole Position in car racing)
3322	TRA	Technology iness Assessment
3323	TRAC	(U.S. Army) TRADOC Analysis Center
3324	TRACON	Terminal Radar Approach Control
3325	TRADOC	(U.S. Army) Training and Doctrine Command
3326	TRANSCOM	U.S. Transportation Command
3327	TRAP	Tactical Receive equipment and related Applications
3328	TRASANA	TRADOC Systems Analysis Agency
3329	TRD	Towed Radar Decoy
3330	TRIGAT	Third Generation Antitank (missile)
3331	TRL	Technology readiness level
3332	Trp	Troop
3333	TRU	Transuranic
3334	TRUEX	Training in Urban Environment Exercise
3335	TRW	Thompson Ramo Wooldridge Inc.
3336	Ts	Terasecond
3337	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3338	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3339	TSEC	Transmission Security Encryption Code
3340	TSL	Transportation Security Laboratory
3341	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3342	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3343	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3344	TSR	Terminate and Stay Resident
3345	TSSIA	The Subject Says It All
3346	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3347	TTCT	Torrance Tests of Creative Thinking
3348	TTFN	Ta Ta For Now
3349	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3350	TTO	Trinidad and Tobago (ISO 3166 trigram)
3351	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3352	TTTEAF	Thomas the Tank Engine and Friends
3353	TTY	TeleTYpewriter (Printer)
3354	TTYL	To You Later (Internet slang)
3355	TTZ	Tetrazolium
3356	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3357	TUC	Trades Union Congress
3358	TUG	TeX Users Group
3359	TUI	Text-based user interface (cf. CLI),among other uses
3360	TUN	Tunisia (ISO 3166 trigram)
3361	TUNS	Technical University of Nova Scotia
3362	TUR	Turkey (ISO 3166 trigram)
3363	TUSK	Tank Urban Survival Kit
3364	TUV	Tuvalu (ISO 3166 trigram)
3365	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3366	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3367	TVA	Tennessee Valley Authority
3368	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3369	TVR	TreVor (Wilkinson) Racing
3370	TVS	Tornado vortex signature
3371	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3372	TWAIN	Technology Without An Interesting Name
3373	TWE	Trans World Entertainment
3374	TWI	The Welding Institute
3375	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
3376	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3377	TWP	Technical Working Paper
3378	TWS	Thermal Weapon Sight,Track While Scan
3379	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3380	TXV	Thermostatic Expansion Valve
3381	TYT	Take Your Time,Internet chat abbreviation
3382	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3383	TZA	Tanzania (ISO 3166 trigram)
3384	TZC	Tetrazolium chloride
3385	U	Uranium
3386	UA	Ukraine (ISO 3166 digram) Unit of Action
3387	UAAP	University Athletic Association of the Philippines
3388	UAB	University of Alabama at Birmingham
3389	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3390	UBC	United Baptist Church,University of British Columbia
3391	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3392	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3393	UCBSA	United Cricket Board of South Africa
3394	UCF	University of Central Florida
3395	UCLA	University of California at Los Angeles
3396	UCLES	University of Cambridge Local Examinations Syndicate
3397	UCR	University of California at Riverside
3398	UCR	University of Costa Rica
3399	UCS	Union of Concerned Scientists
3400	UCSB	University of California at Santa Barbara
3401	UCSD	University of California at San Diego
3402	UDAS	Uppsala-DLR Asteroid Survey
3403	UDDI	Universal Description,Discovery and Integration
3404	UDTS	Uppsala-DLR Trojan Survey
3405	UE	Unit of Employment
3406	UEFA	Union of European Football Associations
3407	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3408	UFC	Ultimate Fighting Championship
3409	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3410	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3411	UGA	Uganda (ISO 3166 trigram)
3412	UGV	Unmanned Ground Vehicle
3413	UHF	Ultra High Frequency
3414	UHMW	Ultra-High Molecular Weight
3415	UHRB	Ultra-High Resolution Building (simulation)
3416	UIC	University of Illinois at Chicago
3417	UID	User ID
3418	UIUC	University of Illinois at Urbana-Champaign
3419	UJTL	Universal Joint Task List
3420	UKIP	United Kingdom Independence Party
3421	UKR	Ukraine (ISO 3166 trigram)
3422	UL	Underwriters Laboratories
3423	ULF	Ultra Low Frequency
3424	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3425	UMCP	Unit Maintenance Collection Point
3426	UMES	University of Maryland Eastern Shore
3427	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3428	UMIST	University of Manchester Institute of Science and Technology
3429	UMTS	Universal Mobile Telecommunications System
3430	UN	United Nations
3431	UNABOM	University and airline bomber (FBI case name)
3432	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3433	UNAMSIL	United Nations Mission in Sierra Leone
3434	UNCF	United Negro College Fund
3435	UNCLOS	United Nations Convention on the Law of the Sea
3436	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3437	UNCTAD	United Nations Conference on Trade and Development
3438	UNDCP	United Nations Drug Control Programme
3439	UNDE	(i/a) Union of National Defence Employees (Canada)
3440	UNDP	United Nations Development Programme
3441	UNEP	United Nations Environment Programme
3442	UNFCCC	United Nations Framework Convention on Climate Change
3443	UNFICYP	United Nations Peacekeeping Force in Cyprus
3444	UNGEGN	United Nations Group of Experts on Geographical Names
3445	UNHCR	United Nations High Commission (er) for Refugees
3446	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3447	UNICRI	United Nations Interregional Crime and Justice Research Institute
3448	UNIDO	United Nations Industrial Development Organization
3449	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3450	UNMIK	United Nations Interim Administration Mission in Kosovo
3451	UNOSOM	United Nations Operations in Somalia
3452	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3453	UNRISD	United Nations Research Institute for Social Development
3454	UNSM	Union of Nova Scotian Municipalities
3455	UNTAC	United Nations Transitional Authority in Cambodia
3456	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3457	UNU	United Nations University
3458	UPdM	Università Popolare della Multimedialità
3459	UPI	United Press International
3460	UPN	United Paramount Network
3461	UPU	Universal Postal Union
3462	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3463	URD	User Requirements Document
3464	URY	Uruguay (ISO 3166 trigram)
3465	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3466	USAF	United States Air Force
3467	USAFSPC	U.S. Air Force Space Command
3468	USAID	United States Agency for International Development
3469	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3470	USAREUR	United States Army Europe
3471	USB	Universal Serial Bus
3472	USCG	United States Coast Guard
3473	USDA	United States Department of Agriculture
3474	USDI	United States Department of the Interior
3475	USDOE	United States Department of Energy
3476	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3477	USEC	United States Enrichment Corporation
3478	USFL	United States Football League
3479	USFWS	United States Fish and Wildlife Service
3480	USGS	United States Geological Survey
3481	USIA	United States Information Agency
3482	USJFCOM	United States Joint Forces Command
3483	USMC	United States Marine Corps
3484	USMNT	United States men's national (soccer) team
3485	USN	United States Navy
3486	USNB	United States Naval Base
3487	USNG	United States National Grid
3488	USNH	United States Naval Hospital
3489	USNI	United States Naval Institute
3490	USNO	U.S. Naval Observatory
3491	USNOFS	United States Naval Observatory Flagstaff Station
3492	USNP	United States Newspaper Program
3493	USNR	United States Navy Reserve
3494	USNS	United States Naval Ship
3495	USNZ	University Sport New Zealand
3496	USPS	United States Postal Service
3497	USPTO	United States Patent and Trademark Office
3498	USS	United States ship (sometimes meaningless; see Star Trek)
3499	USSPACECOM	United States Space Command
3500	USSR	Union of Soviet Socialist Republics
3501	UST	Underground Storage Tank
3502	USTRANSCOM	United States Transportation Command
3503	USWNT	United States women's national (soccer) team
3504	UT	Universal Time
3505	UTEP	University of Texas at El Paso (pronounced you-tep)
3506	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3507	UUA	Unitarian Universalist Association
3508	UUID	Universally Unique Identifier (see also GUID)
3509	UUV	Unmanned Underwater Vehicle
3510	UW	University of Washington
3511	UWO	University of Western Ontario
3512	UWT	Under Water Telephone
3513	UWTG	Under Water Tug
3514	UWW	United World Wrestling
3515	UXO	Unexploded Ordnance
3516	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3517	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3518	UZB	Uzbekistan (ISO 3166 trigram)
3519	VACIS	Vehicle And Container Inspection System
3520	VACIS	Victorian Ambulance Clinical Information System
3521	VANOS	Variable Nockenwelle System
3522	VAO	Vienna Art Orchestra
3523	VBA	Visual Basic for Applications
3524	vCJD	Variant Creutzfeldt-Jakob Disease
3525	VCNO	(U.S.) Vice Chief of Naval Operations
3526	VCofS	Vice Chief of Staff
3527	VCR	Video cassette recorder
3528	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3529	VDFS	VisualSVN Distributed File System (VDFS)
3530	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3531	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3532	VEN	Venezuela (ISO 3166 trigram)
3533	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3534	VfD	s for deletion (used in Wikipedia)
3535	VFM	Value For Money
3536	VFMO	Very Fast Moving Object (astronomy)
3537	VFT	Virtual Function Table
3538	VFW	Veterans of Foreign Wars
3539	VG	British Virgin Islands (ISO 3166 digram)
3540	VGB	British Virgin Islands (ISO 3166 trigram)
3541	VH1	Video Hits One
3542	VHF	Very High Frequency
3543	VIA	Versatile Interface Adapter
3544	VIDS	Visual Information Display System
3545	VII	7 (in Roman numerals)
3546	VIII	8 (in Roman numerals)
3547	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3548	VIP	Very Important Person
3549	VISCII	VIetnamese Standard Code for Information Interchange
3550	VIT	Vellore Institute of Technology
3551	VIVO	Video In Video Out
3552	VJ	Video Jockey
3553	VLAD	Vertical Line Array DIFAR
3554	VLBA	Very Long Baseline Array
3555	VLF	Very Low Frequency
3556	VLIW	Very Long Instruction Word
3557	VLPFC	VentroLateral PreFrontal Cortex
3558	VLPMC	VentroLateral PreMotor Cortex
3559	VLSI	Very-large-scale integration
3560	VM	Vietnam (FIPS 10-4 country code)
3561	VMF	Marine Fighting Squadron of the United States Marine Corps
3562	VMF	Variable Message Format
3563	VMN	VentroMedial Nucleus (neurophysiology)
3564	VN	Vietnam (ISO 3166 digram)
3565	VNIR	Visible and Near InfraRed
3566	VNM	Vietnam (ISO 3166 trigram)
3567	VNS	see entry
3568	VOA	Voice of America
3569	VOIP	Voice Over Internet Protocol
3570	VOLT	Visual OpenType Layout Tool
3571	VON	Victorian Order of Nurses
3572	VOR	Voice of Russia
3573	VOX	Voice Operated oscillator
3574	VPOTUS	Vice President of the United States
3575	VPN	Virtual Private Network
3576	VR	Virtual Reality
3577	VRSG	Virtual Reality Scene Generator
3578	VSHORAD	Very Short Range Air Defence
3579	VSO	Voluntary Services Overseas
3580	VSR	Very Special Relativity
3581	VTC	Video Tele-Conference
3582	VTEC	Variable valve Timing and Electronic lift Control
3583	VTOL	Vertical Take-Off & Landing
3584	VUB	Vrije Universiteit Brussel (Belgian university)
3585	VUT	Vanuatu (ISO 3166 trigram)
3586	VVAF	Vietnam Veterans of America Foundation
3587	VW	Volkswagen
3588	VZ	Verizon Communications (NYSE code)
3589	W3C	World Wide Web Consortium
3590	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3591	WAAF	Women's Auxiliary Air Force (World War II UK)
3592	WACC	Weighted Average Cost of Capital (accounting)
3593	WACS	What-A-Cartoon! Show
3594	WAD	Weapons Alert Designator
3595	WAGGGS	World Association of Girl Guides and Girl Scouts
3596	WAL	see entry
3597	WAN	Wide area network
3598	WAP	Wireless Application Protocol
3599	WAPIMA	What a pain in my ass
3600	WAR	With All Respect
3601	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3602	WAYP	White And Yellow Pages
3603	Wb	Weber
3604	WBC	World Boxing Council
3605	WBE	Work Breakdown Element
3606	WBO	World Boxing Organization
3607	WCBO	World Chess Boxing Organisation
3608	WCBP	World Center for Birds of Prey
3609	WCL	World Confederation of Labour
3610	WCW	World Championship Wrestling
3611	WDIN	Wildlife Disease Information Node
3612	WDWR	Walt Disney World Resort
3613	WEBS	Weapon Effectiveness Battle Simulation
3614	WEC	World Extreme Cagefighting
3615	WEEE	Waste Electrical and Electronic Equipment
3616	WEF	World Economic Forum
3617	WEM	West Edmonton Mall
3618	WEU	Western European Union
3619	WEZ	Weapon Engagement Zone
3620	WF	Wallis and Futuna Islands (ISO 3166 digram)
3621	WFC	Women's Forage Corps (World War II UK)
3622	WFD	Weapon of Focused Destruction
3623	WFF	Wallops Flight Facility
3624	WFI	Water for Injection
3625	WFH	Working from home
3626	WFP	World Food Program
3627	WFZ	Weapons Free Zone
3628	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3629	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3630	WHI	Women's Health Initiative
3631	WHIP	Walks plus hits per inning pitched
3632	WHO	World Health Organisation
3633	WHS	(U.S.) Washington Headquarters Services
3634	WIIFM	What's in it for me?
3635	WIP	Work In Progress
3636	WIPO	World Intellectual Property Organization
3637	WIPP	[Nuclear] Waste Isolation Pilot Plant
3638	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3639	WKYP	Will Keep You Posted
3640	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3641	WLB	Women's Land Brigade (World War II Canada)
3642	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3643	WLOG	Without Loss Of Generality (see WOLOG)
3644	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3645	WMANUS	West Midlands Area National Union of Students
3646	WMD	World Movement for Democracy
3647	WMI	Wildlife Management Institute
3648	WMO	World Meteorological Organization
3649	WNA	World Nuclear Association
3650	WNF	Will Not Fix
3651	WNIT	Women's National Invitation Tournament
3652	WNW	West North-West
3653	WO	Warrant Officer
3654	WOF	Width of Fabric
3655	WOFT	Waste Of Fucking Time
3656	WOFTAM	Waste Of Fucking Time And Money
3657	WOI	Wheels Of Italy
3658	WOM	Write Only Memory
3659	WOS	Wilson Ornithological Society
3660	WOT	Waste Of Time
3661	WP	White Phosphorus (ammunition)
3662	WPB	War Production Board during World War II
3663	WPE	World Pork Expo
3664	WPK	Wider Peacekeeping
3665	WR	Wide Receiver (football)
3666	WRAC	Women's Royal Army Corps (World War II UK)
3667	WRAIR	Walter Reed Army Institute of Research
3668	WRBWWRM	We Best What We Most
3669	WRC	World Rally Championship
3670	WRC	World Religions Conference
3671	WRNG	Warning
3672	WRS	Worldwide Reference System
3673	WRT	NHS Workforce Review Team
3674	WRT	The Linksys routers whose model name start with 'WRT'
3675	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3676	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3677	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3678	WRT	Wireless Ronin Technologies (digital signage)
3679	WRT	World Rally Team
3680	WRT	Writer Response Theory
3681	WSC	Weapon System Catalogue
3682	WSDL	Web Services Description Language
3683	WSJ	(The) Wall Street Journal
3684	WSROC	Western Sydney Regional Organisation of Councils
3685	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3686	WSTC	Women Signallers Territorial Corps (World War II UK)
3687	WSW	West South-West
3688	WTC	World Trade Center
3689	WTF	What the fuck?; also What a Terrible Failure (android)
3690	WTFH	What The Fucking Hell
3691	WTH	What the Hell
3692	WTO	World Trade Organization
3693	WUBU2	What you been up to
3694	WV	West Virginia (postal symbol)
3695	WVA	World Veterinary Association
3696	WVIAC	West Virginia Intercollegiate Athletic Conference
3697	WVR	Women's Volunteer Reserve (World War II UK)
3698	WVSC	Women's Volunteer Service Corps (World War II Canada)
3699	WVU	West Virginia University
3700	WW	see entry
3701	WWE	World Wrestling Entertainment
3702	WWI	World War I
3703	WWII	World War II
3704	WWIII	World War III
3705	WWJD	What would Jesus do?
3706	WWS	Wheaton Warrenville South High School
3707	WWWF	World Wide Wrestling Federation
3708	WXO	Weather [Executive] Officer
3709	WY	Wyoming (postal symbol)
3710	WZ	Swaziland (FIPS 10-4 country code)
3711	XBML	eXtended Business Modelling Language
3712	XC	Ninety (in Roman numerals)
3713	XCBL	XML Common Business Library
3714	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3715	Xe	Xenon
3716	XFA	XML Forms Architecture
3717	XFC	Xtreme Fighting Championships
3718	XFD	Fighter aircraft made by Douglas
3719	Xfe	X File Explorer
3720	XFF	X-Forwarded-For
3721	XFG	Exfoliation glaucoma
3722	XFR	Automobile made by Jaguar
3723	XFT	X FreeType interface library
3724	XG	Automobile made by Hyundai
3725	XGA	Extended Graphics Array
3726	XGP	Extreme Game Player
3727	XHTML	eXtensible Hypertext Markup Language
3728	XI	Eleven (in Roman numerals)
3729	XII	Twelve (in Roman numerals)
3730	XIII	Thirteen (in Roman numerals)
3731	XIV	Fourteen (in Roman numerals)
3732	XIX	Nineteen (in Roman numerals)
3733	XJS	Automobile made by Jaguar
3734	XKB	X keyboard extension
3735	XKE	Automobile made by Jaguar
3736	XKR	Automobile made by Jaguar
3737	XML	eXtensible Markup Language
3738	XMSF	eXtensible Modelling and Simulation Framework
3739	XNA	X-No-Archive,Xeno Nucleic Acid
3740	XNC	X Northern Captain
3741	XNU	X is Not Unix
3742	XP	eXperience Point (role-playing games)
3743	XQJ	XQuery API for Java™
3744	XRAY	X-Ray
3745	XRML	eXtensible Rights Markup Language
3746	XS	Xiaolin Showdown
3747	XSL	eXtensible Style Language
3748	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3749	XUL	XML User Interface Language
3750	XV	Fifteen (in Roman numerals)
3751	XVI	Sixteen (in Roman numerals)
3752	XVII	Seventeen (in Roman numerals)
3753	XVIII	Eighteen (in Roman numerals)
3754	XWF	Xcitement Wrestling Federation
3755	XX	Twenty (in Roman numerals)
3756	Xyl	Xylobium
3757	XZN	Triple square screw driver
3758	y	Yocto-
3759	Y2K	Year Two Thousand
3760	yA	Yoctoampere
3761	Ya	Yottayear
3762	YaBPr	Yet another Brother Pat rant
3763	YABSLAG	Yet another boy singing like a girl
3764	YAC	Youth-Adult Committee
3765	YAFLA	Yet Another Five Letter Abbreviation
3766	YAP	Young Aspiring Professional
3767	YB	Youcef Benzouada (Southern Algerian name)
3768	Yb	Ytterbium
3769	yC	Yoctocoulomb
3770	YC	Yottacoulomb
3771	YDS	Yosemite Decimal System (climbing)
3772	YE	Yemen (ISO 3166 digram)
3773	YEM	Yemen (ISO 3166 trigram)
3774	yF	Yoctofarad
3775	YF	Yottafarad
3776	yg	Yoctogram
3777	Yg	Yottagram
3778	YGCO	Yamaneko Group of Comet Observers
3779	Ygo	Yu-Gi-Oh!
3780	yH	Yoctohenry
3781	YH	Yottahenry
3782	YHBT	You Have Been Trolled
3783	YHII	You Have It Inside
3784	YHS	Ya Hoor sur!
3785	Yi	Yobi
3786	Yippie	Youth International Party + suffix
3787	yJ	Yoctojoule
3788	YJ	Yottajoule
3789	yK	Yoctokelvin
3790	YK	Yottakelvin
3791	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3792	yL	Yoctolitre
3793	YL	Yottalitre
3794	ym	Yoctometre
3795	Ym	Yottametre
3796	YMMD	You Make My Day
3797	yN	Yoctonewton
3798	YN	Yottanewton
3799	YOLO	You Only Live Once
3800	YPA	Yards per Pass Attempt (football statistic)
3801	YPIO	Your Problem Is Obvious
3802	YPO	Young Presidents' Organization
3803	ys	Yoctosecond
3804	yS	Yoctosiemens
3805	Ys	Yottasecond
3806	YS	Yottasiemens
3807	YSI	Young Scots for Independence
3808	yT	Yoctotesla
3809	YTD	Year-To-Date
3810	YTM	Yield to Maturity
3811	YTS	Youth Training Scheme
3812	YTT	Yoshi Topsy-Turvy
3813	Yuppie	Young Urban Professional + suffix
3814	yV	Yoctovolt
3815	YV	Yottavolt
3816	yW	Yoctowatt
3817	YW	Yottawatt
3818	YYH	YuYu Hakusho
3819	z	Zepto
3820	Z	Zetta
3821	zA	Zeptoampere
3822	ZAF	South Africa (ISO 3166 trigram)
3823	ZAMS	Zero age main sequence
3824	ZAS	Zylinder Abschaltung System
3825	ZBT	Zero-Balance Transfer (accounting)
3826	zC	Zeptocoulomb
3827	ZC	Zettacoulomb
3828	ZCM	(n) ZENworks Configuration Management
3829	ZCMK	Zone Control Master Key
3830	ZCU	Zimbabwe Cricket Union
3831	\a	Atto-