extension

noun

UK /ɪkˈstenʃ(ə)n/

Word Forms

singular	extension
plural	extensions

1
countable an extra room or rooms added to a building
We are building an extension on the back of our house.
extension to:
He has applied for permission to build a single-storey extension to his house.
Synonyms and related words
Miscellaneous rooms
airlock
antechamber
anteroom
1. 1a
  a part of a road or railway line added to the existing one
  a proposed motorway extension
  Synonyms and related words
  Parts of roads and road systems
  bend
  black spot
  bus lane
  Synonyms and related words
  Parts of railway and tram systems
  artery
  branch line
  buffer
2
countable a telephone line that is one of several lines coming from a main line
What’s your extension?
I’m on extension 334.
a new extension number
Synonyms and related words
Telephones and telecommunication equipment
3G
4G
5G
3
countable educationextra time that you are given to finish a piece of work, especially at college or university
extension on:
I’m going to ask for an extension on this essay.
Synonyms and related words
University and school work and objects found in the classroom
all-nighter
blackboard
blue book
1. 3a
  extra time that you are given to pay money that you owe
  extension on:
  Will the bank give you an extension on the loan?
  Synonyms and related words
  Relating to borrowing money and owing money
  borrowing
  borrowing powers
  call it quits
2. 3b
  extra time that you are given to use a particular legal document or right
  a visa extension
  extension to:
  Brady wants a two-year extension to his contract.
  Synonyms and related words
  General periods of time
  a clear run
  a page in something’s history
  block
3. 3c
  extra time that a shop, business, or bar is allowed to stay open
  There was a bar extension until midnight.
  extension to:
  Local shops have been granted an extension to opening hours.
  Synonyms and related words
  General periods of time
  a clear run
  a page in something’s history
  block
4
countable something that you add to a long thin object to make it able to reach somewhere
This lead isn’t long enough – do you have an extension?
Synonyms and related words
The outer parts of objects or spaces
apex
back
back end
1. 4a
  
  extensions
  plural long pieces of artificial hair that can be fastened to someone’s hair to make it look longer
  Synonyms and related words
  Artificial hair
  extensions
  fright wig
  hairpiece
5
countable something that develops from a particular custom, activity, idea etc
extension of:
Business entertainment seems a natural extension of Japan’s gift-giving culture.
He sees local history as an extension of family history.
Synonyms and related words
General words for results and outcomes
result
outcome
influence
6
uncountable formalthe action of stretching part of your body
His leg was now capable of full extension.
Synonyms and related words
To move your limbs and appendages
reach out
reach
kick
7
singular/uncountable an increase in the power of something
extension of:
the further extension of state control
Synonyms and related words
Rates of increase and the process of increasing
uptick
increase
growth
8
countable computingthe last part of the name of a computer file. For example, ‘exe’ and ‘doc’ are extensions.
Synonyms and related words
Computer files and documents and collections of computer data
access profile
archive
ASCII file
9
uncountable educationin the UK, a system in which students can take courses at a university without being full-time students
courses provided through university extension
Synonyms and related words
Courses of study
access course
apprenticeship
articles
10
an informal educational process directed toward the rural population
Extension is central to realizing the potential of agricultural innovation.
Submitted by:
Güneş Aydoğan from Turkey on 08/06/2017
Open Dictionary - June2017

phrases

by extension

extension ​‌‌‌

extensions

extension ​‌‌‌

extensions

extension

extension