extension

B2 Topic:Abstract Ideas

US /ɪkˈstɛnʃən/ See IPA manual

Freq #7850

Meanings

1

noun
An extra part added to something to make it bigger or longer.

They are building an extension on the back of the house to add another bedroom.
2

noun
Extra time allowed before something must be finished or paid.

She asked her teacher for an extension on the essay deadline.
3

noun
The act of making something larger, longer, or wider.

The extension of the railway line will connect two more towns.
4

noun
Something seen as a natural continuation or part of something else.

Many parents treat their children as an extension of themselves.
5

noun
The letters after the dot in a file name that show its type.

Files with the .txt extension usually contain plain text.

Thesaurus

Synonyms

3 noun · the act of making something... lengthiness prolongation

More denotation

Opposites

curl limitationshortening

Word family

Forms extensions

Derived forms coextensioncounterextensionextensionalextensionistextensionlessextensographflexoextensionflextensionhyperextensioninextensionnonextensionover-extension

Related forms comprehension extend extense extentflexionintension

Appears in

Phrases (1)

See all

extension service
a program through which a college or university provides education beyond its enrolled students

Noun + noun

Etymology

From Middle English extensioun, from Old French estension, from Latin extensiō, extensiōnem.

extensioun Middle English estension Old French extensiō Latin

View etymology graph ->

Topics

Abstract Ideas

External links

# extension

**Type:** Word
**Level:** B2
**Part of speech:** noun
**IPA (US):** /ɪkˈstɛnʃən/
**Frequency rank:** 7850

## Meanings
1. An extra part added to something to make it bigger or longer.
2. Extra time allowed before something must be finished or paid.
3. The act of making something larger, longer, or wider.
4. Something seen as a natural continuation or part of something else.
5. The letters after the dot in a file name that show its type.

## Examples
- They are building an extension on the back of the house to add another bedroom.
- She asked her teacher for an extension on the essay deadline.
- The extension of the railway line will connect two more towns.
- Many parents treat their children as an extension of themselves.
- Files with the .txt extension usually contain plain text.

## Synonyms
- denotation

## Antonyms
- curl
- limitation
- shortening

## Derived Forms
- coextension
- counterextension
- extensional
- extensionist
- extensionless
- extensograph
- flexoextension
- flextension
- hyperextension
- inextension
- nonextension
- over-extension

## Related Forms
- comprehension
- extend
- extense
- extent
- flexion
- intension

## Roots and Affixes
- Root: extensioun
- Root: estension
- Root: extensiō

## Etymology
From Middle English extensioun, from Old French estension, from Latin extensiō, extensiōnem.

## AI Etymology
Extension comes from Middle English extensioun, from Old French estension, from Latin extensiō, extensiōnem. In current use, the main senses are “An extra part added to something to make it bigger or longer” and “Extra time allowed before something must be finished or paid”.

## Topics
- Abstract Ideas

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