ABM: Anti Ballistic Missiles
AC: Alternating Current; Ashoka Chakra
AD: Anno Domini; In The Year Of Lord Christ
AFSPA: Armed forces special powers act
AIIMS: All India Institute of Medical Sciences
AIR: All India Radio; Annual Information Report
AJT: Advanced Jet Trainer
ALH: Advanced Light Helicopter
AM: Ante Meridiem; Before Noon
APPLE: Arian Passenger Payload Experiment
AJT: Advanced Jet Trainer
AIDS: Acquired Immune Deficiency Syndrome
ASAT: Anti-Satellite Weapon
ASCI: Advanced Strategic Computing Initiative
ASCII: American Standard Code for Information
ASLV: Augmented Satellite Launch Vehicle
ATC: Air Traffic Controller
ATR: Action Taken Report
AWACS: Airborne Warning And Control System
BARC: Bhabha Atomic Research Centre
BBC: British Broadcasting Corporation
BC: Before Christ; Board Of Control; British Columbia; Battery Commander
BCCI: Board Of Cricket Control India
BCG: Bacillus Calmette Guerin—Anti-Tuberculosis Vaccine
BIOS: Basic Input Output System
BMD: Ballistic Missile Defence System
BRO: Border Road Organisation
BRAI: Biotechnology regulatory authority of india
BSF: Border Security Force
BSNL: Bharat Sanchar Nigam Ltd
CAPES: Computer-Aided Paperless Examination System
CBI: Central Bureau Of Investigation
CBFC: Central Board Of Film Certification
CBSE: Central Board of Secondary Education
CCPA: Cabinet Committee On Political Affairs
CD: Conference On Disarmament
CDM: Clean Development Mechanism
C-DAC: The Centre For Development Of Advanced Computing
CDMA: Code Division Multiple Access
CERC: Central Electricity Regulatory Commission
CERN: European Organisation For Nuclear Research (Pronounced CERN In French)
CFC: Chlorofluro Carbon
CIA: Central Intelligence Agency (Of U.S.A.)
CIC: Chief Information Commissioner
CID: Criminal Investigation Department
CISF: Central Industrial Security Force
CNG: Compressed Natural Gas
CNN: Cable News Network
CPCB: Central Pollution Control Board
CPI: Communist Party Of India
CPI(M): Communist Party Of India (Marxists)
CPU: Central Processing Unit
CRPF: Central Reserve Police Force
CTBT: Comprehensive Test Ban Treaty
DC: Deputy Commissioner; Direct Current In Electricity
DDT: Dichloro-Diphenyl Trichloro-Ethane (Disinfectant)
DM: District Magistrate; Deputy Minister
DMK: Dravida Munnetra Kazhagam (A Regional Political Party Of Tamil Nadu)
DNA: De-Oxyribonucleic Acid
Dot : Department Of Telecommunications
DRAM: Dynamic Random Access Memory
DRDO: Defence Research And Development Organisation
DTH: Direct To Home (Broadcasting)
ECG: Electro Cardio-Gram
ECS: Electronic Clearing Service
ECT: Electro-Convulsant Therapy (Electric Shock Treatment)
EDGE : Enhanced Data Rates For Global Evolution
EEG: Electro-Encephalography
EHTP: Electronic Hardware Technology Parks
ELISA: Enzyme Linked Immuno Solvent Assay (Used For Testing AIDS)
EMU: Electric-Multiple Unit; Extra-Vehicular Mobility Unit; (European) Economic And Monetary Union
E & OE: Errors And Omissions Excepted
EPROM: Erasable Programmable Read Only Memory
Etc.: Et Cetera (And Other Things)
EVM: Electronic Voting Machine
FBI: Federal Bureau Of Investigation (Of The U.S.A.)
FIFA : Fédération Internationale De Football Association
FLAG: Fibre Optic Link Around The Globe
FM: Field Marshal; Frequency Modulated
FTP: File Transfer Protocol
GAGAN: GPS-Aided Geo-Augmented Navigation
GAIL: Gas Authority Of India Limited
GHG: Green House Gases
GMPS: Global Mobile Personal Communications System
GMT: Greenwich Mean Time
GNSS: Global Navigation Satellite System
Goi : Government Of India
Gom : Group Of Ministers
GPRS: General Packet Radio System
GPS: Global Positioning System
GSLV: Geosynchronous Satellite Launch Vehicle
GSP: Generalised Special Preferences
HDTV: High Definition Television
HTML: Hyper Text Markup Language
HTTP: Hypetext Transfer Protocol
HVDC: High Voltage Direct Current
IAMAI: Internet And Mobile Association Of India
IAS: Indian Administrative Service
IATA: International Air Transport Association
IATT: Inland Air Travel Tax
ICANN: Internet Corporation For Assigned Names And Numbers
ICAO: International Civil Aviation Organisation
ICJ: International Court Of Justice (With Headquarters At The Hague)
ICL: Indian Cricket League
I.E.: Id Est; That Is
IFS: Indian Foreign Service; Indian Forest Service
IGNOU: Indira Gandhi National Open University
IIT: Indian Institutes Of Technology
IMA: Indian Military Academy
INMAS: Institute Of Nuclear Medicines And Allied Sciences
INSAT: Indian National Satellite
IPC: Indian Penal Code
IPS: Indian Police Service; Indian Postal Service
IPTV: Internet Protocol Television
IRBM: Intermediate Range Ballistic Missile
IRS: Indian Remote Sensing Satellite; Indian Revenue Service
ISAF: International Stabilization And Assistance Force (In Afghanistan)
ISC: Inter-State Council
ISD: International Subscriber Dialled (Telephone)
ISKCON: International Society For Krishna Consciousness
ISP: Internet Service Provider
ISRO: Indian Space Research Organisation
IST: Indian Standard Time
ISTRAC: ISRO Telemetry, Tracking And Command Network
IUC: Interconnect User Charge
JCO: Junior Commissioned Officer
JPC: Joint Parliamentary Committee
JWG: Joint Working Group
Kg: Kilogramme
LAC: Line Of Actual Control
LCA: Light Combat Aircraft
LHC: Large Hadron Collider
LOAC: Line Of Actual Control
LTA: Light Transport Aircraft
LTTE: Liberation Tigers Of Tamil Eelam
METSAT: Meteorological Satellite
MIP: Moon Impact Probe
MMS: Multimedia Messaging Service
MMTC: Minerals and Metals Trading Corporation of India
MODEM: Modulator-Demodulator
MER: Mars Exploration Rover
MBBS: Bachelor of Medicine and Bachelor of Surgery
MCF: Master Control Facility
MOU: Memorandum of understanding
MRI: Magnetic Resonance Imaging
MSA: Maritime Safety Agency
MSCF: Maritime Security Cooperation Framework
MTCR: Missile Technology Control Regime
MVNO: Mobile Virtual Network Operator
NACO: National aids control organisation
NACIL: National Aviation Company Of India Ltd
NADA: National Anti-Doping Agency
NAG: National Air Guard
NASA: National Aeronautics And Space Administration (Of The U.S.A.)
NBW: Non Bailable Warrant
NCA: Nuclear Command Authority
NCC: National Cadet Corps
NCR: National Capital Region
NDA: National Defence Academy; National Democratic Alliance
NDNC: National Do Not Call (Registry)
NDRF: National Disaster Response Force
NDTL: National Dope Testing Laboratory
NEPA: National Environment Protection Authority
NHRC: National Human Rights Commission
NIC: National Integration Council
NIS: National Institute Of Sports
NIT: National Institute Of Technology
NMD: Nuclear Missile Defence
NOC: No Objection Certificate
NPT: (Nuclear) Non-Proliferation Treaty
NRI: Non-Resident Indian
NSA: National Security Act
NSC: National Service Corps; National Security Council
OBC: Other Backward Communities
ODS: Ozone Depletion Substances
PIB: Press Information Bureau
Pin Code: Postal Index Number Code
PM: Post Meridiem; After-Noon; Also Postmaster; Prime Minister; Post-Mortem (After Death)
PO: Post Office; Postal Order
POTA: Prevention Of Terrorism Act
POW: Prisoner Of War
PP: Public Prosecutor; Particular Person
PRO: Public Relations Officer
PSLV: Polar Satellite Launch Vehicle
PTI: Press Trust Of India
PTO: Please Turn Over; Privilege Ticket Order
PUFA: Poly Unsaturated Fatty Acids
PWD: Public Works Department
RAF: Rapid Action Force
RAM: Random Access Memory
REACH: Rehabilitate, Educate And Support Street Children
RLV: Reusable Launch Vehicle
RISUG : Reversible Inhalation of sperms under guidance
SARS: Severe Acute Respiratory Syndrome
SC: Security Council; Supreme Court; Scheduled Caste
SMS: Short Messaging Service; Subscriber Management System
SOS: Save Our Souls—Distress Signal
SPG: Special Protection Group
SPV: Solar Photo Voltaic
SQUID: Super-Conducting Quantum Interference Device
SRE: Space Capsule Recovery Experiment
SRV: Submarine Rescue Vessel
SSN: Social Security Number
STARS: Satellite Tracking And Ranging Station
START: Strategic Arms Reduction Talks
STEP: Science And Technology Entrepreneurship Park
SWAN: State-Wide Area Network
TA: Travelling Allowance; Territorial Army
TADA: Terrorist And Disruptive Activities (Prevention) Act
TAPS: Tarapur Atomic Power Station
TB: Tuberculosis
TDSAT: Telecom Dispute Settlement Appellate Tribunal
TNT: Tri-Nitro-Toluene (High Explosive)
TRP: Television Rating Points; Tax Return Preparer
UAE: United Arab Emirates
UAV: Unmanned Aerial Vehicle
UFO: Unidentified Flying Object
UGC: University Grants Commission
ULFA: United Liberation Front Of Assam
UNI: United News Of India
UPA: United Progressive Alliance
UPSC: Union Public Service Commission
USA: United States Of America
VC: Vice-Chancellor; Vice Counsel; Victoria Cross; Vir Chakra
VHRR: Very High Resolution Radiometer
VIP: Very Important Person
VLSI: Very Large Scale Integration
VOIP: Voice Over Internet Protocol
VSAT: Very Small Aperture Terminals
WADA: World Anti-Doping Agency
WAP: Wireless Application Protocol
WAVE: Wireless Access For Virtual Enterprise
Wifi : Wireless Fidelity
WLL: Wireless In Local Loop
WMD: Weapons Of Mass Destruction