Tamilnadu Board Class 10 English Vocabulary Expanded form of Abbreviation, Acronyms & Contractions

Tamilnadu State Board Class 10 English Vocabulary Expanded form of Abbreviation, Acronyms & Contractions

♦ Expanded Form Of Abbreviation, Acronyms & Contractions (TextBook Page No. : 131-133)

Abbreviations and acronyms are shortened forms of words or phrases. An abbreviation is typically a shortened form of words used to represent the whole (such as Dr. or Prof.) while an acronym contains a set of initial letters from a phrase that usually form another word (such as radar or scuba).

Abbreviations and acronyms are often interchanged, yet the two are quite distinct. The main point of reference is that abbreviations are merely a series of letters while acronyms form new words.

We use contractions (I’m, we’re) in everyday speech and informal writing. Contractions, which are sometimes called ‘short forms’, commonly combine a pronoun or noun and a verb, or a verb and not, in a shorter form.

Contractions with I, you, he, she, it, we, and they
‘m = am (I’m)
’re = are (you’re, we’re, they’re)
’s = is and has (he’s, she’s, it’s)
’ve = have (’ve, you’ve, we’ve, they’ve)
’ll = will (I’ll, you’ll, he’ll, she’ll, it’ll, we’ll, they’ll)
’d = had and would (I’d, you’d, he’d, she’d, it’d, we’d, they’d)

Contractions with auxiliary verb and not The contraction for not is n’t:
aren’t = are not (we aren’t, you aren’t)
can’t = cannot
couldn’t = could not
didn’t = did not (I didn’t, they didn’t)

We can abbreviate the following:

Titles before names:
Mr. = Mister (for men) (plural – Misters) Mrs. = Mistress (for women)
Prof. = Professor (plural – Profs.)
St. = Saint (plural – Sts.)
Rev. = Reverend (plural – Revs.)
Hon. = Honourable (plural – Hons.)
Jr. =unior
Pres. = President

Names of a Few Objects:

VCR = Videocassette Recorder
CD = Compact Disc
DVD = Digital Video/Versatile Disk
GPS = Global Positioning System
VR = Virtual reality
AR = Augmented Reality
TV = Television

Words used with numbers:

a.m. = ante meridiem (before noon)
p.m. = post meridiem (after noon)
A.D. = anno domini
B.C.E. = before common era
C.E. = common era

Common Latin terms:

etc. = et cetera (and*so forth)
i.e. = id est(that is)
e.g. = exempligratia (for example)
et al. = et alii (and others)
vs. = versus

Terms of mathematical units:

ft = feet
ft2 = square feet
kg = kilogram
km = kilometre
mm = millimetre
ml = millilitre
°F = degrees Fahrenheit
°C = degrees Celsius

Names of Familiar Institutions:

CBI = Central Bureau of Investigation
IB = Intelligence Bureau
IMF = International Monetary Fund
UN = United Nations
EC = Election Commission
EU = European Union
IIT = Indian Institute of Technology

Names of Countries:

USA = United Stated of America
UK = United Kingdom
UAE = United Arab Emirates

Long, common phrases

IQ = Intelligence Quotient
mph = miles per hour
mpg = miles per gallon


  • Abbreviation refers to any shortened or contracted form of a word or phrase.
  • Some abbreviations are not pronounced as new words.
  • But not every abbreviation is an acronym.
Abbreviation Expansion
AICTE All India Council for Technical Education
ATM Automated Teller Machine
B.Tech Bachelor of Technology
B.E. Bachelor of Engineering
B.Sc Bachelor of Science
BA Bachelor of Arts
BBC British Broadcasting Corporation
BPO Business Process Outsourcing
BSNL Bharat Sanchar Nigam Limited
CA Chartered Accountant
CBI Central Bureau of Investigation
CCTV Closed-Circuit Television
DTH Direct To Home
EMI Equated Monthly Installment
FIR First Information Report
HIV Human Immunodeficiency Virus
IAS Indian Administrative Service
ICU Intensive Care Unit
IIT Indian Institute of Technology
ILO International Labour Organization
ISI Indian Standard Institute
1ST Indian Standard Time
KPO Knowledge Process Outsourcing
LCD Liquid Crystal Display
LED Light Emitting Diode
L1C Life Insurance Corporation of India
LPG Liquefied Petroleum Gas
M.B.B.S. Bachelor of Medicine and Bachelor of Surgery
MNC Multi-National Corporation / Company
NGO Non-Governmental Organization
NRI Non-Resident Indian
PA Personal Assistant / Postal Assistant
POW Prisoners of War
PS Personal Secretary / PostScript
RPF Railway Protection Force
RRB Railway Recruitment Board
SBI State Bank of India
SHG Self Help Group (for women)
SMS Short Message Service
ssc Staff Selection Commission
STD Subscriber Trunk Dialling
SR Southern Railways
TNPSC Tamil Nadu Public Service Commission
TRB Teachers Recruitment Board
UAE United Arab Emirates
UFO Unidentified Flying Object
UGC University Grants Commission
UPS Uninterrupted Power Supply
USA United State of America
WTC World Trade Centre
WWW World Wide Web


Choose the expanded form of the abbreviation :

Question 1.
The common expansion of CCTV is :
(a) Charged Channel Television
(b) Closed Channel Television
(c) Closed-Circuit Television
(d) Checked-Circuit Television
(c) Closed-Circuit Television

Question 2.
The common expansion of SSC is:
(a) State Subordinate Commission
(b) Staff Selection Commission
(c) State School Certificate
(d) School System Common
(b) Staff Selection Commission

Question 3.
The common expansion of TNPSC is:
(a) Tamil Nadu Police Service Commission
(b) Tamil Nadu Public Service Committee
(c) Tamil Nadu People Service Commission
(d) Tamil Nadu Public Service Commission
(d) Tamil Nadu Public Service Commission

Question 4.
The common expansion of SBI is:
(a) Selection Board of India
(b) Selection Bureau of India
(c) State Bank of India
(d) Security Board of India
(c) State Bank of India

Question 5.
The common expansion of CA is:
(a) Chief Accountant
(b) Central Accountant
(c) Central Army
(d) Chartered Accountant
(d) Chartered Accountant

Question 6.
The common expansion of IAS is:
(a) Indian Administrative Service
(b) Indian Armed Service
(c) Indian Army Service
(d) Indian Agricultural Service
(a) Indian Administrative Service

Question 7.
The common expansion of TPC is:
(a) Integrated Police Council
(b) Indian Penal Code
(‘) Independent Police Corps
(d) International Public Census
(b) Indian Penal Code

Question 8.
The common expansion of BPT is:
(a) Bachelor of Pure Therapy
(b) Bachelor of Physiotherapy
(c) Bachelor of Post Treatment
(d) Bachelor of Poverty Treatment
(b) Bachelor of Physiotherapy

Question 9.
The common expansion of TC is:
(a) Training Card
(b) Train Concession
(c) Transfer Certificate
(d) Transfer Code
(c) Transfer Certificate

Question 10.
The common expansion of SR is:
(a) Suburban Railways
(b) Standard Railways
(c) Southern Railways
(d) Steam Railways
(c) Southern Railways

Question 11.
The common expansion of KPO is:
(a) Kinetic Potential Output
(b) Knowledge Process Outsourcing
(c) Keen Programme Observation
(d) Knowledge Performance Outcome
(b) Knowledge Process Outsourcing

Question 12.
The common expansion of ATM is:
(a) Automatic Teller Machine
(b) Automated Teller Machine
(c) Automatic Typing Machine
(d) Automated Telling Man
(b) Automated Teller Machine

Question 13.
The common expansion of RRB is:
(a) Rails and Reservation Board
(b) Record and Revenue Bank
(c) Railway Recruitment Board
(d) Roadways and Railways Bureau
(c) Railway Recruitment Board

Question 14.
The common expansion of BPO is:
(a) Bank Process Outsourcing
(b) Better Process Outsourcing
(c) Business Process Outsourcing
(d) Boyle Process Outsourcing
(c) Business Process Outsourcing

Question 15.
The common expansion of ILO is:
(a) International Law and Order
(b) International Labour Organisation
(c) Indian Legal Orientation
(d) Inter-state Lawful Ordinance
(b) International Labour Organisation

Question 16.
The common expansion of PA?
(a) Personal Ambassador
(b) Private Affair
(c) Personal Assistant
(d) Public Apartment
(c) Personal Assistant

Question 17.
The common expansion of SMS?
(a) Simple Message Service
(b) Simple and Minimum Service
(c) Short Message Service
(d) Short Membership Service
(c) Short Message Service

Question 18.
The common expansion of IOB is:
(a) International Overseas Banking
(b) Indian Organisation of Banks
(c) Indian Overseas Bank
(d) Indian Origin of Banks
(c) Indian Overseas Bank

Question 19.
The common expansion of WHO is:
(a) Western Health Organisation
(b) Western Hemisphere Ocean
(c) World Health Organisation
(d) World Heritage Organisation
(c) World Health Organisation

Question 20.
The common expansion of UFO is:
(a) Unidentified Foreign Object
(b) Unidentified Flying Object
(c) Universal Force Organisation
(d) United Federal Organisation
(b) Unidentified Flying Object


  • Acronym is a type of abbreviation where a new word is formed from the first letters of a series of words.
  • Pronounced as a separate word,
  • All acronyms are abbreviations.

AIDS – Acquired Immune Deficiency Syndrome
AIR – All India Radio
BHEL – Bharat Heavy Electricals Limited
CAT – Common Admission Test
FIFA – Federation of International Football Association
IGNOU – Indira Gandhi National Open University
INSAT – Indian National Satellite
ISRO – Indian Space Research Organisation
LAN – Local Area Network
NATO – North Atlantic Treaty Organisation
OTP – One Time Password
PAN – Permanent Account Number
PIN – Postal Index Number
RADAR – Radio Detecting and Ranging
RAM – Random Access Memory
ROM – Read Only Memory
SAI – Sports Authority of India
SAIL – Steel Authority of India Limited
SAT – Standard Assessment Task (British), Scholastic Aptitude Test (USA)
SIM – Subscriber Identification Module
TAPE – Tractor and Farm Equipment Limited
TANCET – Tamil Nadu Common Entrance Test
TANSI – Tamil Nadu Small Industries Corporation
TET – Teacher Eligibility Test
TOEFL – Test of English as a Foreign Language
VAT – Value Added Tax
WHO – World Health Organization


Choose the expanded form of the abbreviation:

Question 1.
The common expansion of INSAT is:
(a) International Satellite
(b) Integrated Space and Technology Work
(c) Indian National Satellite
(d) Independent Satellite Track
(c) Indian National Satellite

Question 2.
The common expansion of AIR is:
(a) All India Railways
(b) All India Rivers
(c) All India Radio
(d) All Indian Religions
(c) All India Radio

Question 3.
The common expansion of RAM is:
(a) Read Only Memory
(b) Read Access Memory
(c) Rapid Accurate Memory
(d) Random Access Memory
(d) Random Access Memory

Question 4.
The common expansion of ISRO is
(a) International Satellite Research Organisation
(b) Indian Space Research Organisation
(c) Indian Social Reforms Organisation
(d) Indian Southern Railway Organisation
(b) Indian Space Research Organisation

Question 5.
The common expansion of CAT is:
(a) Common Aptitude Test
(b) Computer Aptitude Test
(c) Computer Accuracy Test
(d) Computer Accessories Test
(a) Common Aptitude Test

Question 7.
The common expansion of PIN is:
(a) Population Index Number
(b) Postal Index Number
(c) Poor Identification Notice
(d) Physics Internal Note
(b) Postal Index Number

Question 8.
The common expansion of LAN is:
(a) Local Available Network
(b) Local Area Node
(c) Local Area Network
(d) Large Area Network
(c) Local Area Network

Question 9.
The common expansion of RADAR is:
(a) Radio Digital Accurate Report
(b) Radio Defect And Rectification
(c) Radio Digital And Range
(d) Radio Deduction And Ranging
(d) Radio Deduction And Ranging

Question 10.
The common expansion of VAT is:
(a) Value Audit Trade
(b) Valves And Tubes
(ç) Value Added Tax
(d) Value Access Track
(c) Value Added Tax

Question 11.
The common expansion of GATE is:
(a) General Aptitude Test in Electronics
(b) Graduate Aptitude Test in Electronics
(c) Graduate Aptitude Test in Engineering
(d) General Aptitude Test in Engineering
(c) Graduate Aptitude Test in Engineering

Question 12.
The common expansion of FERA is:
(a) Federal Railway Act
(b) Foreign Exchange Regulation Act
(c) Federal Eastern Railways Administration
(d) Foreign Exchange Regional Act
(b) Foreign Exchange Regulation Act



Choose the correct expansion of the following contractions.

Question 1.
(a) Will not
(b) Would not
(c) Woo not
(a) will not

Question 2.
(a) Must give
(b) Must have
(c) Must live
(b) must have

Question 3.
(a) I would
(b) I do
(c) I did
(a) I would

Question 4.
(a) She sees
(b) She does
(c) She is
(c) She is

Question 5.
(a) Whose
(b) Who has
(c) Who does
(b) Who has

Tamilnadu Board Class 10 English Solutions