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AAA	Amateur Athletic Association
AAA	American Automobile Association
AAM	air-to-air missile
AAR	against all risks
AAS	Acedemiae Americanae Socius
AAS	Associate in Applied Science
AAU	Amateur Athletic Union
ABA	Amateur Boxing Association
ABC	American Broadcasting Association
ABC	Associated British Cinemas
ABC	Audit Bureau of Circulations
ABC	Australian Broadcasting Commission
ABH	actual bodily harm
ABI	Association of British Insurers
ABM	anti-ballistic missile
ABO	(blood group system)
ABS	Associate of the Building Societies Institute
ABS	Association of Broadcasting Staff
ABS	anti-lock braking system
ACA	Associate of the Institute of Chartered Accountants
ACE	American Council on Education
ACK	ACKnowledge
ACP	African, Caribbean and Pacific
ACP	American College of Physicians
ACT	Advance Corporation Tax
ACT	Australian Capital Territory
ACU	Association of Commonwealth Universities
ACV	Actual Cash Value
ACV	Air Cushion Vehicle
ACW	Aircraftwoman
ADA	American Dental Association
ADA	Americans with Disabilities Act
ADC	aide-de-camp
ADC	analogue-to-digital converter
ADD	American Dialect Dictionary
ADF	Automatic Direction Finder
ADH	Anti Diuretic Hormone
ADP	adenosine diphosphate
ADP	automatic data processing
AEA	Atomic Energy Authority
AEB	Associated Examining Board
AEC	Atomic Energy Commission
AEF	American Expeditionary Force
AEI	Associated Electrical Industries
AEM	Air Efficiency Medal
AEU	Amalgamated Engineering Union
AFA	Amateur Football Association
AFB	Air Force Base
AFC	Air Force Cross
AFC	automatic frequency control
AFL	American Football League
AFM	Air Force Medal
AFN	until further notice
AFP	Alpha-FetoProtein
AFT	Automatic Fine Tuning
AFV	Armoured Fighting Vehicle
AGC	automatic gain control
AGM	annual general meeting
AGR	advanced gas-cooled reactor
AHA	area health authority
AHL	American Hockey League
AHS	anno humanae salutis
AID	Agency for International Development
AID	artificial insemination by donor
AIH	artificial insemination by husband
AIM	American Indian Movement
AIR	All India Radio
AIX	IBM Unix
AKA	also known as
AKC	American Kennel Club
ALA	American Library Association
ALC	automatic level control
ALE	address latch enable
ALM	Association of Lloyd's Members
ALS	Antilymphocytic Serum
ALS	Autographed Letter Signed
ALU	arithmetic and logic unit
AMA	American Medical Association
AMA	Association of Metropolitan Authorities
AMC	American Motors Corporation
AMG	Allied Military Government
AMO	Area Medical Officer
AMP	Adenosine Mono-Phosphate
AMP	Association of Mirror Pensioners
AMS	Abstract Messaging Services
AMS	Agricultural Marketing Service
AMS	American Mathematical Society
AMU	atomic mass unit
ANA	American Newspapers Association
ANA	American Nurses Association
ANC	African National Congress
AOB	any other business
AOC	Advanced Office Computer
AOC	appellation d'origine controlee
AOF	Ancient Order of Foresters
APB	All Points Bulletin
APC	Armoured Personnel Carrier
API	Air Position Indicator
API	Application Program Interface
APL	a programming language
APR	annual percentage rate
APT	Advanced Passenger Train
ARA	Associate of the Royal Academy
ARC	Agricultural Research Council
ARC	axial resolution converter
ARM	Acorn Risc Machine
ARM	Advanced RISC Micro
ARP	air-raid precaution
ARR	anno regni regis
ASA	Advertising Standards Authority
ASA	Amateur Swimming Association
ASA	American Standards Association
ASB	Accounting Standards Board
ASC	American Society of Cinematographers
ASC	advanced SCSI controller
ASE	Amalgamated Society of Engineers
ASE	Association for Science Education
ASF	Associate of the Institute of Shipping and Forwarding Agents
ASH	Action on Smoking and Health
ASM	air-to-surface missile
AST	Atlantic Standard Time
ATA	Actual Time of Arrival
ATA	Air Transport Auxiliary
ATC	Air Training Corps
ATC	air traffic control
ATC	automatic train control
ATE	automatic test equipment
ATM	Asynchronous Transfer Mode
ATP	adenosine triphosphate
ATP	automatic train protection
ATS	Auxiliary Territorial Service
ATS	anti-tetanus serum
ATV	Associated Television
AUC	ab urbe condita
AUT	Association of University Teachers
AUX	Apple Unix
AVC	additional voluntary contribution
AVC	automatic volume control
AVM	Air Vice-Marshall
AVR	Army Volunteer Reserve
AWB	Afrikaner Weerstandsbeweging
AWG	American Wire Gauge
AWK	Aho, Weinberg, Kernighan
AWS	automatic warning system
AZT	*[Zidovudine, AIDS drug]
AZT	[Zidovudine, AIDS drug]
BAA	British Airports Authority
BAC	British Aircraft Corporation
BAE	British Aerospace
BAF	British Athletic Federation
BAI	Baccalaureus in Arte Ingeniaria
BAL	British Anti-Leisite (trade name for dimercaprol)
BAT	British-American Tobacco Company
BBB	very soft pencil
BBC	British Broadcasting Corporation
BCA	British Concrete Association
BCC	blind carbon copy
BCC	British Council of Churches
BCG	bacillus of Calmette and Guerin
BCH	Baccalaureus Chirurgiae
BCL	Bachelor of Civil Law
BCS	British Computer Society
BDA	British Dental Association
BDH	British Drug Houses
BDI	Bundesverband der Deutschen Industrie
BDS	Bachelor of Dental Surgery
BEA	British European Airways
BEC	Building Employers' Confederation
BED	Bachelor of Education
BEF	British Expeditionary Force
BEI	Banque Europeenne d'Investissement
BEM	British Empire Medal
BEM	Bug-Eyed Monster
BES	Business Expansion Scheme
BEV	billion electron volts
BFG	Big Friendly Giant (Roald Dahl character)
BFI	British Film Institute
BFI	Brute Force and Ignorance
BFN	bye for now
BFO	beat-frequency oscillator
BFR	Belgian franc
BGA	ball grid array
BGS	British Geological Survey
BHS	British Home Stores
BIH	Bureau Internationale de l'Heure
BIM	British Institute of Management
BIR	British Institute of Radiology
BIS	Bank for International Settlements
BIX	Byte Information eXchange
BJP	Bharatiya Janata Party
BMA	British Medical Association
BMC	British Motor Corporation
BMJ	British Medical Journal
BMK	Borough of Milton Keynes
BML	Britism Museum Library
BMR	Basal Metabolic Rate
BMW	Bayerische Motoren Werke
BNF	Backus-Naur Form
BNP	British National Party
BOA	British Optical Association
BOC	British Oxygen Company
BOD	biological oxygen demand
BOT	Board of Trade
BOT	beginning of tape
BPC	British Pharmaceutical Codex
BPC	British Priniting Corporatioon
BPC	British Printing Corporation
BPO	British Patent Office
BRD	Bundesrepublik Deutschland
BRM	British Racing Motors
BRS	British Road Services
BSA	Birmingham Small Arms
BSA	Building Societies Association
BSB	British Satellite Broadcasting
BSB	British Sky Broadcasting
BSC	Bachelor of Science
BSC	British Steel Corporation
BSC	British Sugar Corporation
BSC	Broadcasting Standards Council
BSD	Berkley Software Distribution
BSE	bovine spongiform encethalopathy
BSF	British standard fine
BSI	British Standards Institution
BSI	Building Societies Institute
BSM	Battalion Sergeant-Major
BSM	British School of Motoring
BSP	British standard pipe
BST	British Summer Time
BST	bovine somatropin
BSW	British standard whitworth
BTA	British Tourist Authority
BTG	British Technology Group
BTU	British Thermal Unit
BTW	by the way
BVM	Blessed Virgin Mary
BWB	British Waterways Board
BWV	Bach Werke Verzeichnis
BZW	Barclays de Zoete Wedd
BeV	billion electron volts
CAA	Civil Aviation Authority
CAB	Citizens' Advice Bureau
CAB	Civil Aeronautics Board
CAD	cash against documents
CAD	computer-aided design
CAE	computer-aided engineering
CAI	computer-aided instruction
CAL	Computer Assisted Learning
CAM	computer-aided manufacturing
CAM	content-addressable memory
CAN	customs assigned number
CAP	Common Agricultural Policy
CAR	Central African Republic
CAR	Contents of Address Register
CAR	compound annual rate
CAS	column address strobe
CAT	College of Advanced Technology
CAT	computer-aided typesetting
CBC	Canadian Broadcasting Corporation
CBE	Commander of the Order of the British Empire
CBI	Confederation of British Industry
CBM	Californian Business Machines
CBS	Columbia Broadcasting System
CBS	Confraternity of the Blessed Sacrement
CBW	Chemical and Biological Warfare
CCA	current cost accounting
CCD	charge-coupled device
CCF	Combined Cadet Force
CCS	Corporation of Certified Secretaries
CCT	compulsory competitive tendering
CDB	command data block (SCSI)
CDC	Centres for Disease Control
CDC	Control Data Corporation
CDI	compact disk - interactive video
CDM	cold dark matter
CDR	Contents of Decrement Register
CDV	Civil Defence Volunteers
CEF	Canadian Expeditionary Force
CEI	Council of Engineering Institutions
CEL	Crosfield Electronics Limited
CEN	Comite Europeen de Normalisation
CEO	Chief Executive Officer
CEP	Crosfield Electronics - Peterborough
CET	Central European Time
CFA	code field address
CFC	Commonhold Flats Campaign
CFC	chloro-fluorocarbon
CFG	Context Free Grammar
CFM	cubic feet per minute
CGA	colour graphics array
CGM	Conspicuous Gallantry Medal
CGS	Chief of the General Staff
CGS	centimetre - gram - second
CGT	capital gains tax
CHB	Chirurgiae Baccalaureus
CHC	Community Health Council   
CHE	Campaign for Homosexual Equality
CHM	Chirurgiae Magister
CIA	Central Intelligence Agency
CID	Council of Industrial Design
CID	Criminal Investigation Department
CIE	Commission Internationale de l'Eclairage
CIE	Coras Iompair Eireann
CIF	cost, insurance, freight
CII	Chartered Insurance Institute
CIM	Commission on Industry and Manpower
CIM	computers in manufacturing
CIO	Congress of Industrial Organisations
CIO	carrier insertion oscillator
CIR	Commission on Industrial Relations
CIS	Chartered Institute of Secretaries
CIS	Commonwealth of Independent States
CIT	Chartered Institute of Transport
CLA	Country Landowners' Association
CLR	computer language recorder
CLT	computer language translator
CMG	Companion of the Order of St Michael and St George
CMI	computer-managed instruction
CMK	Central Milton Keynes
CML	Council of Mortgage Lenders
CMM	Capability Maturity Model
CMM	Colour Management Module
CMM	Co-ordinate Measuring Machine
CMS	Church Missionary Society
CMY	cyan-magenta-yellow
CND	Campaign for Nuclear Disarmament
CNF	Chomsky Normal Form
CNN	Cable News Network
CNR	Canadian National Railway
CNS	central nervous system
CNT	Commission for the New Towns
COD	Concise Oxford Dictionary
COD	cash on delivery
COI	Central Office of Information
COL	computer-oriented language
COM	computer-output microfilm
COQ	cost of quality
CPA	Chartered Patent Agent
CPC	Clerk of the Privy Council
CPI	consumer price index
CPL	Computer Programming Language
CPO	Chief Petty Officer
CPP	calling party pays
CPR	Canadian Pacific Railway
CPS	Crown Prosecution Service
CPS	Custos Privati Sigilli
CPS	characters per second
CPS	cycles per second
CPU	central processing unit
CRC	Chemical Rubber Company
CRC	circumferential resolution converter
CRC	cyclic redundancy check
CRE	Commission for Racial Equality
CRE	Commission/Council for Racial Equality
CRO	Criminal Records Office
CRO	cathode-ray oscilloscope
CRS	Co-operative Retail Society
CRT	cathode-ray tube
CSA	Confederate States of America
CSB	Connection Server Broker (Uniplex)
CSC	Conspicuous Service Cross
CSE	Certificate of Secondary Education
CSF	Cerebro-Spinal Fluid
CSI	Companion, Order of the Star of India
CSO	Community Service Order
CSP	Chartered Society of Physiotherapists
CSP	chip scale package
CSP	Council for Scientific Policy
CST	Cental Standard Time
CST	Central Standard Time
CSU	Civil Service Union
CSV	community service volunteer
CTC	City Technical College
CTC	Cyclists' Touring Club
CTG	Channel Tunnel Group
CTS	Carpal Tunnel Syndrome
CTS	clear to send
CTT	Capital Transfer Tax
CUP	Cambridge University Press
CVO	Commander of the Victorian Order
CWO	cash with order
CWR	continuous welded rail
CWS	Co-operative Wholesale Society
CYK	Cocke-Younger-Kasami (algorithm)
DAC	digital-to-analogue converter
DAF	Deutsche Amerikanische Freundschaft (pop group)
DAF	Doorn Automobielfabriek
DAG	Deputy Adjutant-General
DAG	Directed Acyclic Graph
DAT	digital analogue tape
DBE	Dame Commander of the Order of the British Empire
DCC	digital compact cassette
DCD	data carrier detect
DCE	Distributed Computer Environment
DCH	Doctor of Surgery
DCL	DEC Control Language
DCL	Distillers Company Limited
DCL	Doctor of Civil Law
DCM	Distinguished Conduct Medal
DCP	District Community Physician
DCR	document change request
DCS	Deputy Clerk of Sessions
DCT	discrete cosine transform
DCh	Doctor of Surgery (Doctor Chirurgiae)
DDD	dat, dicat, dedicat
DDO	design drawing office
DDR	Deutsche Demokratische Republik
DDS	Digital Data Storage
DDS	Doctor of Dental Surgery
DDT	dichlorodiphenyltricloroethane
DEA	Department of Economic Affairs
DEA	Drugs Enforcement Agency
DEC	Digital Equipment Company
DED	Doctor of Education
DEL	DELete 
DEP	Department of Employment and Productivity
DES	Data Encryption Standard
DES	Department of Education and Science
DEW	distant early warning
DFA	Deterministic Finite Automaton
DFC	Distinguished Flying Cross
DFD	data flow diagram
DFM	Distinguished Flying Medal
DFM	design for manufacturing
DFT	Discrete Fourier Transform
DGH	District General Hospital
DHQ	District HeadQuarters
DIC	Diploma of the Imperial College
DIG	Disabled Income Group
DIH	Diploma in Industrial Health
DIL	dual in-line
DIN	Deutsche Industrie Normen
DIP	dual in-line plastic
DIY	do-it-yourself
DLE	Data Link Escape
DLL	Dynamically Linked Library
DMA	direct memory access
DMD	Data Model Diagram
DMM	digital multimeter
DMU	diesel multiple unit
DMV	Department of Motor Vehicles
DMZ	demilitarised zone
DNA	National Dyslexia Association
DNA	deoxyribonucleic acid
DNB	Dictionary of National Biography
DOA	dead on arrival
DOA	delegation of authority
DOB	date of birth
DOC	District Officer Commanding
DOC	dissolved organic carbon
DOD	Department of Defense
DOE	Department of the Environment
DOG	Directory of Opportunities for Graduates
DOH	Department of Health
DOI	Department of Industry
DOM	Deo optimo maximo
DOM	dirty old man
DOS	disk operating system
DPH	Diploma in Public Health
DPI	defects per installation
DPI	dots per inch
DPM	Diploma in Psychological Medicine
DPP	Director of Public Prosecutions
DPT	Diphtheria, Pertussis, Tetanus vaccine
DPU	defects per unit
DSC	Distinguished Service Cross
DSM	Distinguished Service Medal
DSO	Distinguished Service Order
DSP	decessit sine prole
DSR	data set ready
DSS	Department of Social Security
DTF	Dairy Trades Federation
DTH	Doctor of Theology
DTI	Department of Trade and Industry
DTL	diode-transistor logic
DTM	data traffic manager
DTP	Department of Transport
DTP	desk-top publishing
DTh	Doctor of Theology
DVD	digital versatile disk
DVD	digital video disk
DVM	digital voltmeter
DVT	driving van trailer
DWI	Drinking Water Inspectorate
DOE	Department of the Environment
EBU	European Broadcasting Union
ECB	European Central Bank
ECE	Economic Commission for Europe
ECG	electrocardiogram
ECG	export credits guarantee
ECJ	European Court of Justice
ECL	emitter-coupled logic
ECM	electronic countermeasures
ECO	engineering change order
ECO	English Chamber Orchestra
ECP	English Collective of Prostitutes
ECT	electroconvulsive therapy
ECU	English Church Union
ECU	European Currency Unit
EDB	Bachelor of Education
EDC	European Defence Community
EDF	Electricite de France
EDF	European Development Fund
EDL	Eurotunnel Developments Limited
EDP	electronic data processing
EDS	English Dialect Society
EEC	European Economics Community
EEG	electroencephalogram
EET	Eastern European Time
EEV	English Electric Valve
EFA	European Fighter Aircraft
EFI	Electronic Fuel Injection
EFL	English as a foreign language
EFT	electronic funds transfer
EGA	extended graphics array
EGM	extraordinary general meeting
EGU	English Golf Union
EHO	Environmental Health Officer
EHT	extra-high tension
EIB	European Investment Bank
EIS	Educational Institute of Scotland
ELB	earth leakage breaker
ELF	early life failure
ELO	Electric Light Orchestra
ELR	Equal Listener Response
ELT	English language teaching
EMA	European Monetary Agreement
EMC	electromagnetic compatibility
EMF	European Monetary Fund
EMF	electromotive force
EMI	Electrical and Musical Industries
EMI	European Monetary Institution
EMP	electromagnetic pulse
EMS	Enhanced Memory Specification
EMS	European Monetary System
EMS	eosinophilia-myalgia syndrome
EMU	European Monetary Union
EMU	electric multiple unit
EMU	electromagnetic unit
EMU	engine management unit
ENE	east-north-east
ENG	electronic news gathering
ENO	English National Opera
ENQ	ENQuiry
ENS	Ecole Normale Superieure
ENT	ear, nose and throat
EOC	Equal Opportunities Commission
EOD	Electro-Optic Developments
EOD	every other day
EOE	errors and omissions excepted
EOF	end of file
EOT	End Of Transmission
EOT	end of tape
EPA	Environmental Protection Act
EPA	Environmental Protection Agency
EPA	European Productivity Agency
EPO	European Patent Office
EPS	earnings per share
EPU	European Payments Union
ERC	Engineering Research Council
ERD	Emergency Reserve Decoration
ERD	Entity Relationship Diagran
ERF	E.R. Foden lorries
ERM	Exchange rate mechanism
ERP	effective radiated power
ESA	European Space Agency
ESA	Eurotunnel SA
ESC	ESCape (ASCII)
ESE	east-south-east
ESL	English as a second language
ESM	electronic support measures
ESN	educationally subnormal
ESP	English for special purposes
ESP	extra-sensory preception
ESR	Erythrocyte Sedimentation Rate
ESR	electron spin resonance
ESS	environmental stress screening
EST	Eastern Standard Time
EST	electric shock treatment
EST	expressed sequence tag
ESU	English-speaking Union
ESU	electrostatic unit
ETA	Euzkadi ta Askatasuna
ETA	estimated time of arrival
ETD	estimated time of depature
ETU	Electrical Trades Union
ETX	end of text
EVT	Equi-Viscous Temperature
EYP	Electronic Yellow Pages
FAA	Federal Aviation Authority
FAD	Flavin Adenine Dinucleotide
FAO	Food and Agriculture Organisation
FAQ	frequently-asked question
FAS	Fellow of the Antiquarian Society
FAS	Fellow of the Society of Arts
FAS	free alongside ship
FBA	Fellow of the British Academy
FBI	Federal Bureau of Investigation
FBS	Fellow of the Botanical Society
FCA	Fellow of the Institute of Chartered Accountants
FCB	file control block
FCC	Federal Communications Commission
FCN	field change note
FCO	Foreign and Commonwealth Office
FCP	Fellow of the College of Preceptors
FDA	Food and Drug Administration
FDD	floppy disk drive
FDR	Franklin Delano Roosevelt
FDR	Freie Demokratische Republik
FET	field-effect transistor
FFR	Fellow of the Faculty of Radiologists
FGS	Fellow of the Geological Society
FHS	Fellow of the Heraldry Society
FIA	Fellow of the Institute of Actuaries
FIA	feline infectious anaemia
FIB	Fellow of the Institute of Bankers
FIM	Fellow of the Institute of Metallurgists
FIP	feline infectious peritonitis
FIS	Family Income Supplement
FJI	Fellow of the Institute of Journalists
FLA	Fellow if the Library Association
FLS	Fellow of the Linnean Society
FMC	Ford Motor Company
FMN	Flavin MoNucleotide
FMP	Frog Mortality Project
FOB	free-on-board
FOC	father of the chapel
FOC	free of charge
FOE	Friends of the Earth
FOR	free on rail
FPA	Family Planning Association
FPC	Family Practitioner Committee
FPS	Fellow of the Philosophical/Pharmaceutical Society
FPS	foot - pound - second
FRF	French franc
FRG	Federal Republic of Germany
FRM	field-replaceable module
FRN	floating-rate note
FRS	Fellow of the Royal Society
FRU	field-replaceable unit
FSA	Fellow of the Society of Antiquaries
FSE	Feline Spongiform Encephalopathy
FSF	Fellow of the Institute of Shipping and Forwarding Agents
FSF	Free Software Federation
FSH	Follicle-Stimulating Hormone
FSS	Fellow of the Statistical Society
FST	Flatter, Squarer Tube
FUO	Fever of Unknown Origin
FWD	four-wheel drive
FWD	front-wheel drive
FYC	Fine Young Cannibals (pop group)
FZS	Fellow of the Zoological Society
GAC	granular activated carbon
GAL	generic array logic
GBA	Alderney
GBE	Grand Cross of the British Empire
GBG	Guernsey
GBH	grievous bodily harm
GBJ	Jersey
GBM	Isle of Man
GBP	Great Britain pound
GBS	George Bernard Shaw
GBZ	Gibraltar
GCA	ground control approach system
GCB	Grand Cross of the Bath
GCD	greatest common denominator
GCE	General Certificate of Education
GCH	Grand Cross of Hanover
GCM	Grand Court-martial
GCM	general circulation model
GCM	greatest common measure
GDI	Gross Domestic Income
GDP	gross domestic product
GDR	German Democratic Republic
GEC	General Electric Company
GHQ	general headquarters
GIE	Groupement d'Interet Economique
GIF	graphics interchange format
GKN	Guest, Keen and Nettlefold
GLC	Greater London Council (defunct)
GLS	general lighting service
GMC	General Medical Council
GMT	Greenwich Mean Time
GNP	gross national product
GNU	Gnu's Not Unix
GOC	General Officer Commanding
GOM	Grand Old Man
GOP	Grand Old Party
GOT	Glutamic Oxaloacetic Transaminase
GPA	Guiness Peat Aviation
GPI	General Paralysis/Paresis of the Insane
GPO	General Post Office
GPS	GEC Plessey Semiconductor
GPS	global positioning geodesy
GPT	GEC Plessey Telecommunications
GPT	Glutamic Pyruvic Transaminase
GRN	goods received note
GSM	Guildhall School of Music
GSM	grams per square metre
GSO	General Staff Officer
GSP	good service pension
GTC	General Teaching Council
GTI	gran turismo injection
GTO	gate turn-off
GUI	graphical user interface
GUM	Gosudarstvenni Universalni Magazin
GUS	Great Universal Stores
GWR	Great Western Railway
GeV	Giga-electron-Volts
HAA	Hospitla Activity Analysis
HAC	Honourable Artillery Company
HAC	high-alumina cement
HBM	His/Her Britannic Majesty
HCF	Honorary Chaplain to the Forces 
HCF	halt and catch fire
HCF	highest common factor
HCG	Human Chorionic Gonadotrophin
HCM	His Catholic Majesty
HDP	Helio Data Processing
HEA	Health Education Authority
HEH	His Exalted Highness
HGV	heavy goods vehicle
HHH	incredibly hard pencil
HIE	Hostpital In-patient Enquiry
HIH	His/Her Imperial Highness
HIM	His/Her Imperial Majesty
HIS	hic iacet sepultus
HIV	human immunodeficiency virus
HLA	Histocompatibility Lymphocyte-A
HLI	Highland Light Infantry
HMA	Headmasters' Association
HMC	His Majesty's Customs
HMG	His Majesty's Government
HMI	His Majesty's Inspectorate
HMP	hoc monumentum posuit
HMS	His Majesty's Ship
HMV	His Master's Voice
HNC	Higher National Certificate
HND	Higher National Diploma
HPL	Hewlett-Packard language
HPT	Holmes Peat Thorpe (accountants)
HPV	human papilloma virus
HRE	Holy Roman Emperor
HRH	His Royal Highness
HRM	His Royal Majesty
HSE	Health and Safety Executive
HSE	hic sepultus est
HSH	His Serene Highness
HSS	Historiae Societatis Socius
HSS	high-speed steel
HST	high-speed train
HTR	High Temperature Reactor
HTV	Harlech Television
HWM	high water mark
IAM	Institute of Advanced Motorists
IAS	Indian Administrative Service
IAU	International Astronomical Union
IBA	Independent Broadcasting Authority
IBC	Independent Broadcasting Commission
IBM	International Business Machines
ICA	Institute of Contemporary Arts
ICC	International Cricket Council
ICE	Institution of Civil Engineers
ICE	in-car entertainment
ICE	in-circuit emulator
ICI	Imperial Chemical Industries
ICJ	Imperial Court of Justice
ICJ	Imperial/International Court of Justice
ICL	International Computers Limited
ICS	Indian Civil Service
ICT	International Computers and Tabulators
IDA	International Development Association
IDB	illict diamond buying
IDC	insulation-displacement connector
IDN	in Dei nomine
IDV	International Distillers and Vintners
IEA	Institute of Economic Affairs
IEA	International Energy Agency
IEC	International Electrotechnical Commission
IEE	Institution of Electrical Engineers
IFC	International Finance Corporation
IFF	identify friend or foe
IFM	instantaneous frequency measurement
IFS	Irish Free State
IGC	Intergovernmental Commission
IGR	Institute for Genomic Research
IHP	indicated horse-power
IHQ	international headquarters
IHS	Iesus Hominum Salvator
IIL	integrated injection logic
ILC	irreversible letter of credit
ILN	Illustrated London News
ILO	International Labour Organisation
ILP	Independent Labour Party
ILR	independent local radio
ILS	instrument landing system
IMF	International Monetary Fund
IMM	Institution of Mining and Metallurgy
IMP	Integrated Micro Products
IMR	Infant Mortality Rate
IOB	Institute of Building
IOC	Industrial Organisation Corporation
IOC	International Olympic Committee
IOJ	Institute of Journalists
IOM	Isle of Man
IOU	I owe you
IOW	Isle of Wight
IPA	India Pale Ale
IPA	Institute of Practioners in Advertising
IPA	International Phonetic Alphabet
IPA	International Phonetic Association
IPA	International Publishers' Association
IPC	International Publishing Corporation
IPD	in praesentia Dominorum
IPX	*(Networking)
IQS	Institute of Quantity Surveyors
IRA	Irish Republican Army
IRB	Irish Republican Brotherhood
IRC	International Red Cross
IRQ	interrupt request
IRS	Internal Revenue Service
ISD	International Subscriber Dialling
ISG	Information Systems Group
ISO	International Standards Origanisation
ISP	Internet Service Provider
ISR	Interrupt Subroutine
ITA	Independent Television Authority
ITB	Industrial Training Board
ITN	Independent Television News
ITO	International Trade Organisation
ITT	International Telephone and Telegraph Corporation
ITU	International Telecommunications Union
ITV	Independent Television
IUD	intra-uterine device
IVP	intra-venous pyelogram
IVR	international vehicle registration
IWA	Inland Waterways Association
IWC	International Whaling Commission
IGA	Immunoglobulin A (IgA)
IGD	Immunoglobulin D (IgD)
IGE	Immunoglobulin E (IgE)
IGG	Immunoglobulin G (IgG)
IGM	Immunoglobulin M (IgM)
JAL	Japan Air Lines
JCB	J.C. Bamford excavators
JCD	Juris Civilis Doctor
JCR	junior common room
JET	Joint European Torus
JFK	John Fitzgerald Kennedy
JHS	John Hornby Skewes (UK co)
JIT	just in time
JMB	Joint Matriculation Board
JPL	Jet Propulsion Laboratory
JSD	Jackson Structured Design
JSP	Jackson Structured Programming
JUD	Juris Utriusque Doctor
KBE	Knight Commander of the Order of the British Empire
KCB	Knight Commander of the Bath
KGB	Komitet Gosudarstvennoi Bezopasnosti
KJD	Kreuzfeldt-Jakob Disease
KKK	Ku Klux Klan 
KLH	Knight of the Legion of Honour
KLM	Koninklijke Luchtvaart Maatschappij
KWH	kilowatt-hour
LAC	Licentiate of the Apothecaries' Company
LAN	local acceptance note
LAN	local area network
LAX	Los Angeles International airport
LBC	London Broadcasting Company
LBJ	Lyndon Baines Johnson
LBO	leveraged buy-out
LBW	Leg Before Wicket
LCC	London County Council
LCD	liquid-crystal display
LCD	lowest common denominator
LCJ	Lord Chief Justice
LCM	lowest common multiple
LCP	Licentiate of the College of Preceptors
LDA	load accumulator
LDI	laser direct imaging
LDC	less-developed country
LDP	Liberal Democratic Party
LDS	Licentiate in Dental Surgery
LDT	Law Debenture Trust
LDV	Local Defence Volunteers
LDX	load index
LEA	local education authority
LEB	London Electricity Board
LED	light-emitting diode
LEM	lunar excursion module
LEP	Large Electron-Positron Accelerator
LFA	link field address
LFO	Low Frequency Oscillator
LGU	Ladies Golf Union
LGV	ligne a grande vitesse
LHC	Large Hadron Collider
LHD	Litteratum Humaniorum Doctor
LHD	left-hand drive
LHR	London Heathrow airport
LLB	Legum Baccalaureus
LLD	Legum Doctor
LLM	Legum Magister
LMS	London Missionary Society
LMS	London, Midland and Scottish Railway
LMX	London Market Excess of Loss
LNG	liquified natural gas
LOB	Location of Offices Bureau
LOX	liquid oxygen
LPG	liquified petroleum gas
LPI	lines per inch
LPO	London Philharmonic Orchestra
LRB	London Residual Body
LRC	London Rubber Company
LRT	London Regional Transport
LSA	Licentiate of the Society of Apothecaries
LSB	Least Significant Bit
LSD	librae, solidi, denarii
LSD	lysergic acid diethylamide
LSE	London School of Economics
LSO	London Symphony Orchestra
LSU	Louisiana State University
LTA	Lawn Tennis Association
LTH	Licentiate in Theology
LTM	Licentiate in Tropical Medicine
LUA	Lloyd's Underwriters Association
LUL	London Underground Limited
LUN	Logical Unit Number (SCSI)
LUT	look-up table
LVA	Licensed Victuallers Association
LVN	Limiting Viscosity Number
LWM	low water mark
LWT	London Weekend Television
LZW	Lempel, Ziv, Welch (compression algorithm)
MAC	multiplexed analogue component
MAC	multiplier-accumulator
MAO	MonoAmine Oxidase
MBA	master of business administration
MBE	Member of the Order of the British Empire
MBE	Molecular Beam Epitaxy
MBO	management buy-out
MCA	Microchannel Architecture
MCA	monetary compensatory amounts
MCA	mono character array
MCB	Miniaturized Circuit Breaker
MCC	Marylebone Cricket Club
MCC	Maxwell Communications Corporation
MCH	Magister Chirurgiae
MCP	male chauvinist pig
MCR	Magnetic Character Recognition
MDK	medical diagnostic kit
MDS	Master of Dental Surgery
MEP	Member of the European Parliament
MEZ	Mitteleuropaische Zeit
MFH	Master of Foxhounds
MFM	modified frequency modulation
MGM	Metro-Goldwyn-Mayer (films)
MGN	Mirror Group Newspapers
MHC	major histocompatibility complex
MHG	Middle High German
MHR	Member of the House of Representatives
MIG	Mikoyan and Gurevich
MIP	manufacturing introduction plan
MIS	Management Information Systems
MIT	Massachussets Institute of Technology
MJI	Member of the Institute of Journalists
MKS	metre - kilogram - second
MLA	Member of Legislative Assembly
MLA	Modern Language Association
MLC	Meat and Livestock Commission
MLC	Member of Legislative Council
MLR	minimum lending rate
MMB	Milk Marketing Board
MMC	Monopolies and Mergers Commission
MMI	man-machine interface
MMU	memory-management unit
MOD	Ministry of Defence
MOH	Medical Officer of Health
MOS	metal-oxide-semiconductor
MOT	Ministry of Transport
MOV	Metal Oxide Varistor
MPB	male pattern baldness
MPG	miles per gallon
MPH	miles per hour
MPP	master project plan
MPS	Member of the Pharmaceutical Society
MPS	Member of the Philological Society
MPU	microprocessor unit
MRA	moral rearmament
MRC	Medical Research Council
MRG	Minority Rights Group
MRV	multiple re-entry vehicles
MSB	Most Significant Bit
MSC	Manpower Services Commission
MSC	Master of Science
MSF	medium standard frequency
MSG	Monosodium Glutamate
MSH	Melanocyte-Stimulating-Hormone
MSL	mean sea-level
MSS	manuscripts
MST	Mountain Standard Time
MSW	Medical Social Worker
MTB	motor torpedo-boat
MTH	Master of Theology
MUD	Multi-User Dungeon
MVO	Member of the Royal Victorian Order
MVP	Most Valuable Product
MeV	Million electron Volts
NAK	Negative AcKnowledge
NAS	National Academy of Science
NBA	Net Book Agreement
NBC	National Broadcasting Company
NBG	no bloody good
NBI	Nothing But Initials
NBL	National Book League
NBS	National Bureau of Standards
NCB	National Coal Board
NCC	Nature Conservancy Council
NCE	New Civil Engineer
NCO	non-commissioned officer
NCR	National Cash Register
NCT	National Childbirth Trust
NCV	no commercial value
NDA	Non-Disclosure Agreement
NEB	National Enterprise Board
NEB	New English Bible
NEC	National Executive Committee
NEC	National Exhibition Centre
NED	New English Dictionary
NEI	non est inventus
NFA	Non-deterministic Finite Automaton
NFG	No F*****g Good
NFL	NAtional Football League (US)
NFS	National Fire Service
NFS	Network File System
NFT	National Film Theatre
NFU	National Farmers' Union
NGA	National Graphical Association
NGO	non-governmental organisation
NGS	new generation systems
NHI	National Health Insurance
NHS	National Health Service
NIC	National Incomes Commission
NIC	national insurance contribution
NIE	national intelligence estimate
NIH	National Institutes of Health
NIH	Not Invented Here
NME	New Musical Express (UK weekly)
NMR	nuclear magnetic resonance
NNE	north-north-east
NNI	noise and number index
NNW	north-north-west
NOP	National Opinion Poll
NOP	no operation
NOP	not otherwise provided
NPA	Number Plan America
NPG	National Portrait Gallery
NPL	National Physical Laboratory
NPN	Negative-Positive-Negative (transistor)
NPT	Nuclear Non-Proliferation Treaty
NRA	National Rifle Association
NRA	National Rivers Authority
NRE	non-recurring expenditure
NSB	National Savings Bank
NSC	National Scrabble Championships
NSE	Network SouthEast
NSF	National Science Foundation
NSM	New Smoking Material
NSU	non-specific urethritis
NSW	New South Wales
NTC	neagtive temperature coefficient
NTC	negative temperature coefficient
NTP	normal temperature and pressure
NTS	National Trust for Scotland
NTS	new technology scanners
NTT	Nippon Telegraph and Telephone Corporation
NUI	National University of Ireland
NUJ	National Union of Journalists
NUL	NULl
NUM	National Union of Mineworkers
NUR	National Union of Railwaymen
NUS	National Union of Seamen
NUS	National Union of Students
NUT	National Union of Teachers
NVM	Nativity of the Virgin Mary
NWT	North-west Territory
NYC	New York City
NYO	National Youth Orchestra
NZD	New Zoo Developments
OAP	Old-Age Pensioner
OAS	Organisation of American States
OAS	on active service
OAU	Organisation of African Unity
OBE	Officer of the Order of the British Empire
OCF	Officiating Chaplain to the Forces
OCR	optical character recognition
ODI	Open Datalink Interface
OED	Oxford English Dictionary
OEM	original-equipment manufacturer
OFT	Office of Fair Trading
OLE	Object Linking and Embedding (Microsoft Windows)
OMD	Orchestral Manoeuvres in the Dark
OMG	Object Management Group
ONA	Open Network Architecture
ONC	Ordinary National Certificate
OND	Ordinary National Diploma
ONO	or near offer
OOP	Object-Oriented Programming
OOU	out of use
ORB	Object Request Broker (OMG)
OSA	Ordinis Sancti Augustini
OSB	Ordinis Sancti Benedicti
OSF	Open Software Foundation
OSF	Ordinis Sancti Francisci
OSP	obiit sine prole
OTA	Office of Technology Assessment
OTC	Officers' Training Corp
OTC	over the counter
OTT	over the top
OUP	Oxford University Press
PAD	piezo-electric displacer
PAL	phase change on alternate lines
PAL	programmable array logic
PBI	poor bloody infantry
PBP	product business plan
PBX	private branch exchange
PCB	polychlorinated biphenyl
PCB	printed circuit board
PCC	Portable C Compiler
PCC	parochial church council
PCM	per calendar month
PCM	pulse code modulation
PCN	production change note
PCR	polymerase chain reaction
PCS	Principal Clerk of Sessions
PDA	Personal Digital Assistant
PDI	pre-delivery inspection
PDL	Program Description Language
PDQ	Pretty Damned Quick
PDT	Pacific Daylight Time
PEC	photoelectric cell
PEI	Prince Edward Island
PEL	picture element
PEN	poets, playwrights, editors, essayists and novelists
PES	product engineering specification
PEO	Principal Engineering Officer
PEP	personal equity plan
PEP	political and economic planning
PFA	parameter field address
PFA	pulverised fly ash
PFI	private finance initiative
PFM	Premiata Forneria Marconi (pop group)
PGA	Professional Golfers' Association
PGA	pin-grid array
PGM	Past Grand Master
PHB	Philosophiae Bacclaureus
PHD	Philosophiae Doctor
PIA	Pakistan International Airlines
PIA	Private Investment Authority
PIA	parallel interface adaptor
PIA	peripheral interface adaptor
PIA	programmable interface adaptor
PIB	Prices and Incomes Board
PID	proportional - integral - differential
PIF	programme information file
PIN	p-type - intrinsic - n-type
PIN	personal identification number
PIT	programmable interval timer
PIV	penis-in-vagina
PKL	phenylketonuria
PLA	Port of London Authority
PLA	programmable logic array
PLC	programmable logic controller
PLC	public limited company
PLO	Palestine Liberation Organisation
PLP	Parliamentary Labour Party
PLP	product life-cycle process
PLS	programmable logic sequencer
PLU	People Like Us
PMG	Paymaster General
PMG	Postmaster General
PMO	Principal Medical Officer
PMS	post-menopausal syndrome
PMT	photomultiplier tube
PMT	pre-menstrual tension
PNP	Positive-Negative-Positive (transistor)
POA	Prison Officers' Association
POA	price on application
POC	point of care
POD	Pocket Oxford Dictionary
POD	pay on delivery
POO	post-office order
POS	point of sale
POW	prisoner of war
PPA	Pre-School Playgroups Association
PPB	parts per billion
PPC	picture post-card
PPC	pour prendre conge
PPE	politics, philosophy and economics
PPI	plan position indicator
PPM	parts per million
PPP	Private Patients Plan
PPS	Parliamentary Private Secretary
PPS	post-postscriptum
PRB	Pre-Raphaelite Brotherhood
PRN	pro re nata
PRO	Public Record Office
PRO	Public Relations Officer
PRS	product requirement specification
PRT	Petroleum Revenue Tax
PSA	Peugeot SA
PSA	Property Services Agency
PSA	pleasant Sunday afternoon
PSI	pounds (force) per square inch
PSI	proliferation security initiative
PST	Pacific Standard Time
PSU	power supply unit
PSV	public service vehicle
PTA	Parent/Teacher Association
PTA	Passenger Transport Authority
PTC	positive temperature coefficient
PTC	programmable timer-counter
PTH	plated-through hole
PTO	please turn over
PTO	public telecommunications operator
PTT	Post, Telegraphy & Telephony
PTY	Pseudo-Terminal (TTY)
PVA	polyvinyl acetate
PVC	polyvinyl chloride
PWB	printed wiring board
PWD	Public Works Department
PWM	pulse width modulation
PWR	pressurised water reactor
qAB	Queen Anne's Bounty
QCD	quantum chromodynamics
QED	Quite Easily Done
QED	quantum electrodynamics
QED	quod erat demonstrandum
QEF	quod erat faciendum
QEH	Queen Elizabeth Hall
QEI	quod erat inveniendum
QFD	quality functional deployment
QFP	quad flat pack
QIG	quality improvement group
QMG	Quartermaster-General
QMS	Quartermaster-Sergeant
QPR	Queens Park Rangers
QQV	quae vide
QSG	Quality Steering Group
QSO	quasi-stellar object
RAC	Royal Arch Charter
RAC	Royal Armoured Corps
RAC	Royal Automobile Club
RAF	Royal Air Force
RAM	Royal Academy of Music
RAM	random access memory
RAM	relative atomic mass
RAN	Royal Australian Navy
RAS	Royal Asiatic Society
RAS	Royal Astronomical Society
RAS	Russian Academy of Sciences
RAS	refuelling at sea
RAS	row address strobe
RAX	rural automatic exchange
RBA	Royal Society of British Artists
RBS	Royal Society of British Sculptors
RCA	Radio Corporation of America
RCA	Royal Canadian Academy
RCB	residual current breaker
RCD	residual current device
RCM	Regimental Court-martial
RCM	Royal College of Music
RCN	Royal Canadian Navy
RCO	Royal College of Organists
RCP	Royal College of Physicians
RCS	Royal College of Surgeons
RCT	Royal Corps of Transport
RDC	Rural District Council
RDS	Radio Data System
RDS	Royal Dublic Society
REM	rapid eye movement
REN	ringer equivalence number
RFA	Royal Fleet Auxiliary
RFC	Royal Flying Corps
RFI	radio-frequency interference
RFU	Rugby Football Union
RGB	red-green-blue
RGG	Royal Grenadier Guards
RGN	Registered General Nurse
RGS	Royal Gepgraphical Society
RHA	Regional Health Authority
RHA	Road Haulage Association
RHA	Royal Hibernian Academy
RHA	Royal Horse Artillery
RHD	right-hand drive
RHF	Royal Highland Fusiliers
RHG	Royal Horse Guards
RHM	Rank Hovis McDougall
RHS	Royal Highland Show
RHS	Royal Historical Society
RHS	Royal Horticultural Society
RHS	Royal Humane Society
RIA	Royal Irish Academy
RIC	Royal Institute of Chemistry
RIC	Royal Irish Constabulary
RIP	requiescat in pace
RKO	*Radio Keith-Orpheum (films)
RLO	returned letter office
RLS	Robert Louis Stevenson
RMA	Royal Military Academy
RMO	Resident Medical Officer
RMO	Resident/Regional Medical Officer
RMP	Royal Military Police
RMS	Royal Mail Steamer
RMS	Royal Microscopical Society
RMS	root mean square
RNA	ribonucleic acid
RNR	Royal Naval Reserve
ROC	Republic Of China
ROC	Royal Observer Corps
ROI	return on investment
ROI	Royal Institute of Oil Painters
ROK	Republic of Korea
ROM	read-only memory
ROS	read-only storage
RPA	radiation protection adviser
RPC	Remote Procedure Call
RPI	retail price index
RPM	retail price maintenance
RPM	revolutions per minute
RPN	reverse Polish notation
RPO	Royal Philharmonic Orchestra
RPS	Royal Photographic Society
RRE	Royal Radar Establishment
RRP	recommended retail price
RSA	Republic of South Africa
RSA	Rivest-Shamir-Adelson (public-key cryptosystem)
RSA	Royal Scottish Academy
RSA	Royal Society of Antiquaries
RSA	Royal Society of Arts
RSE	Royal Society of Edinburgh
RSG	rate support grant
RSG	regional seats of government
RSI	repetitive strain injury
RSL	Royal Society of Literature
RSM	Regimental Sergeant-Major
RSM	Royal School of Music
RSM	Royal Society of Medicine
RSO	Resident Sugical Officer
RSO	radiological safety officer
RSO	railway sorting office
RSO	railway sub-office
RSO	rural sub-office
RSS	Regiae Societatis Socius
RSS	Royal Statistical Society
RSV	Revised Standard Version
RSW	Royal Scottish Water Colour Society
RTE	Radio Telefis Eireann
RTL	resistor-transistor logic
RTO	Railway Transportation Officer
RTS	request to send
RTZ	Rio Tinto Zinc Corporation
RUC	Royal Ulster Constabulary
RWS	Royal Society of Painters in Water Colours
RYA	Royal Yachting Association
RYS	Royal Yacht Squadron
RZS	Royal Zoological Society
SAA	Society of Incorporated Accountants
SAA	South African Airways
SAA	small arms ammunition
SAE	Society of Automotive Engineers (lubricant viscosity numbers)
SAE	stamped, addressed envelope
SAL	single alternating line
SAM	surface-to-air missile
SAM	synchronous address multiplexer
SAS	Scandinavian Airlines System
SAS	Sociatatis Antiquariorum Socius
SAS	Special Air Service
SAW	Stock, Aitken, Waterman (pop manipulators)
SBC	single-board computer
SBD	Silent But Deadly
SBN	standard book number
SBS	Special Boat Service
SBU	strategic business unit
SCA	Subsidence Claims Association
SCB	Scientiae Baccalaureus
SCD	Scientiae Doctor
SCE	Scottish Certificate of Education
SCF	Save the Children Fund
SCL	Student of Civil Law
SCM	Specialists in Community Medicine
SCM	State Certified Midwife
SCM	Student Christian Movement
SCM	short-cycle manufacturing
SCO	Santa Cruz Operation
SCR	senior common room
SCR	silicon controlled rectifier
SDA	Scottish Development Agency
SDC	single data converter
SDD	Scottish Development Department
SDP	Social Democratic Party
SDP	social, domestic and pleasure
SDR	special drawing rights
SEC	Securities and Exchange Commission
SEC	Stock Exchange Committee
SED	Scottish Education Department
SEM	scanning electron microscope
SEN	State Enrolled Nurse
SEO	Senior Engineering Officer
SEP	someone else's problem
SET	selective employment tax
SEX	set index
SEX	sign extend
SFA	Scottish Football Association
SFA	Securities and Futures Authority
SFA	sweet Fanny Adams
SFO	San Francisco airport
SFO	Serious Fraud Office
SGF	Scottish Grocers' Federation
SHV	sub hoc verbo
SIA	serial interface adaptor
SIB	Securities and Investment Board
SIC	Securities and Investment Commission
SIL	Speech Interference Level (acoustic scale)
SIR	subsurface interface radar
SIS	Special Intelligence Service
SIV	simian immunodeficiency virus
SJC	San Jose International airport
SKB	Smith Kline Beecham
SLD	Social and Liberal Democrats
SLP	Scottish Labour Party
SLP	Scottish Liberal Party
SLP	sine legitima prole
SLR	Simple LR (parser)
SLR	single-lens reflex
SMB	Server Message Block
SMC	Scottish Mountaineering Club
SMD	surface-mount device
SMM	Sancta Mater Maria
SMO	Senior Medical Officer
SMP	School Mathematics Project
SMP	Symmetric Multiprocessing
SMP	sine mascula prole
SMR	Standardised Mortality Ratios
SMT	surface-mount technology
SNA	Systems Network Architecture
SNO	Scottish National Orchestra
SNP	Scottish National Party
SNU	solar neutrino unit
SOB	son-of-a-bitch
SOD	Shorter Oxford Dictionary
SOE	Special Operations Executive
SOH	Start Of Header
SOR	sale or return
SOS	Save Our Souls
SOS	silicon on sapphire
SOV	Safe Operating Volume
SPG	Special Patrol Group
SPR	Society for Psychical Research
SPS	sine prole superstite
SPX	*(networking protocol)
SRC	Science Research Council
SRC	Student Representative Council
SRI	Sacrum Romanum Imperium
SRN	software release note
SRN	state-registered nurse
SRS	Societatis Regiae Socius
SRU	Scottish Rugby Union
SSB	single side-band
SSC	Societas Sanctae Crucis
SSC	Solicitor before the Supreme Court
SSC	superconducting supercollider
SSD	Sanctissimus Dominus
SSE	south-south-east
SSI	solid-state interlocking
SSM	surface-to-surface missile
SSN	standard serial number
SST	supersonic transport
SSW	south-south-west
STA	store accumulator
STD	sexually transmitted disease
STD	state transition diagram
STD	subscriber trunk dialling
STP	Sanctae Theologiae Professor
STP	standard temperature and pressure
STS	Scottish Text Society
STV	Scottish Television
STV	single transferable vote
STX	start of text
STX	store index
SUN	Standardisation, Units and Nomenclature (IUPAP sub-committee)
SWA	Scotch Whisky Association
SWG	Standard Wire Gauge
TAC	technical advisory committee
TBA	to be announced
TBD	to be determined
TBD	torpedo-boat destroyer
TCB	task control block
TCD	Trinity College Dublin
TCD	Twentieth Century Dictionary
TCL	Trinity College of Music, London
TCP	transmission control protocol
TCP	trichlorophenylmethyliodosalicyl
TEC	training and enterprise council
TES	Times Educational Supplement
TFR	Territorial Force Reserve
TGV	train a grande vitesse
THC	Tetra-Hydro-Cannabinnol
THD	Doctor of Theology
THF	Trust House Forte
THL	Theological Licentiate
TID	ter in die
TIF	Transports Internationaux par Chemin de Fer
TIL	threaded interpreted language
TIR	Transports Internationaux Routiers
TLA	three-letter abbreviation
TLA	three-letter acronym
TLB	translation look-aside buffer
TLS	Times Literary Supplement
TMA	Tycho Magnetic Anomaly (A.C. Clarke, 2001)
TME	Technische Mass Einheit
TML	Trans Manche Limited
TMS	Tonne - Metre - Second
TNT	trinitrotoluene
TOA	time of arrival
TPI	Town Planning Institute
TPI	Tracks Per Inch
TPO	travelling post office
TRF	tuned radio frequency
TRG	Transition Graph
TRH	Their Royal Highnesses
TSB	Trustee Savings Bank
TSO	town sub-office
TSR	Terminate and Stay Resident
TSS	toxic shock syndrome
TTL	temporary traffic lights
TTL	to take leave
TTL	transistor-transistor logic
TTY	teletype
TUA	Telecommunications Users' Association
TUC	Trades Union Congress
TVA	Tennessee Valley Authority
TVM	TeleVision Movie
TVP	texturised vegetable protein
TVR	television rating
TWA	Trans-World Airlines
TWI	Training within Industry
TWT	travelling-wave tube
UAE	United Arab Emirates
UAL	United Airlines
UAR	United Arab Republic
UCL	University College London
UDA	Ulster Defence Association
UDC	Universal Decimal Classification
UDC	Urban District Council
UDI	Unilateral Declaration of Independence
UDR	Ulster Defence Regiment
UDT	United Dominions Trust
UFC	University Funding Council
UFF	Ulster Freedom Fighters
UFO	unidentified flying object
UGC	University Grants Committee
UHF	ultra high frequency
UHT	ultra heat treated
UHT	ultra high tension
UJD	Utriusque Juris Doctor
UKL	United Kingdom pounds
ULP	Unit in Last Place
UNA	United Nations Association
UNC	unified coarse
UNF	unified fine
UNH	unnilhexium
UNO	United Nations Organisation
UNP	unnilpentium
UNQ	unnilquadium
UNS	unnilseptium
UPU	Universal Postal Union
UPW	Union of Post Office Workers
URA	Urban Regeneration Agency
URC	United Reformed Church
USA	United States of America
USL	Unix Software Laboratories
USM	unlisted securities market
USM	unsharp masking
USN	United States Navy
USP	Unique Selling Points/Position
USS	United States Ship
USW	ultrasonic waves
UTA	Unit Trust Association
UTC	universal co-ordinated time
UUQ	ununquadium
UVA	ultra-violet type A
UVB	ultra-violet type B
UVF	Ulster Volunteer Force
VAD	Voluntary Aid Detachment
VAR	Value Added Reseller
VAT	value-added tax
VCA	voltage-controlled amplifier
VCO	voltage-controlled oscillator
VCR	video cassette recorder
VDC	Volunteer Defence Corps
VDM	Verbi Dei Minister
VDT	visual display terminal
VDU	visual display unit
VFD	vacuum-fluorescent display
VGA	versatile graphics array
VHF	very high frequency
VHS	JVC videocassette system
VIP	very important person
VIR	Victoria Imperatrix Regina
VLF	very low frequency
VMH	Victoria Medal of Honour
VMS	Virtual Machine System
VRD	Volunteer Reserve Decoration
VRI	Victoria Regina et Imperatrix
VRQ	verbal reasoning quotient
VSO	voluntary service overseas
VTO	vertical take off
VTR	video tape recorder
WAN	wide-area network
WBA	West Bromwich Albion
WBA	World Boxing Association of America
WBC	World Boxing Council
WBO	World Boxing Organisation
WCC	World Council of Churches
WCT	World Championship Tennis
WEA	Workers' Educational Association
WEU	Western European Union
WFA	White Fish Authority
WFN	Worldwide Fund for Nature
WHO	World Health Organisation
WIC	Whitbread Investment Company
WIP	work in progress
WLA	Women's Land Army
WLF	Women's Liberal Federation
WMD	weapons of mass destruction
WMO	World Meteorological Organisation
WNP	Welsh National Party
WNW	west-north-west
WRI	Women's Rural Institute
WRP	Workers' Revolutionary Party
WSW	west-south-west
WTO	Warsaw Treaty Organisation
WTO	World Trade Organisation
WUB	Wake Up Block
WVS	Women's Voluntary Service
WWF	World Wildlife Fund
XGA	Extended Graphics Array
YHA	Youth Hostels Association
YOP	Youth Opportunities Programme
YTV	Yorkshire Television
ZIP	Zone Improvement Plan
ZIP	zig-zag in-line package
ZPG	zero population growth
ZSL	Zoological Society of London
ZST	zone standard time
ZTT	Zang Tuum Tumb (record co)

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