English dictionary

extension Meaning & Definition

Q: What is the plural of extension?

The plural of extension is extensions.

/ɪkˈstɛnʃən/

What Does Extension Mean?

Extension is a noun that means The act of extending; a stretching out; enlargement in length, breadth, or time; an increase. It can also mean The state of being extended.

Extension in Brief

Part of speech	noun
Pronunciation	//ɪkˈstɛnʃən//
Syllables	1
Synonyms	annex, denotation and reference
Antonyms	contraction, shortening and limitation
Plural	extensions

Extension Definition (Noun)

The act of extending; a stretching out; enlargement in length, breadth, or time; an increase.
Next month the house is undergoing an extension.
The state of being extended.
That property of a body by which it occupies a portion of space (or time, e.g. "spatiotemporal extension").
A short exact sequence 1→H→E→G→1, or the group E therein.
A short exact sequence 0→B→E→A→0, or the object E therein.
A part of a building that has been added onto the original.
An outgrowth; a part of something that extends its capabilities.
Parents who treat their children as an extension of themselves
Capacity of a concept or general term to include a greater or smaller number of objects; — correlative of intension.
Semantic widening, broadening of meaning.
A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
The operation of stretching a broken bone so as to bring the fragments into the same straight line.
An exercise in which an arm or leg is straightened against resistance.
A simple offensive action, consisting of extending the weapon arm forward.
A numerical code used to indicate a specific telephone in a telecommunication network.
Ellipsis of file extension.
Files with the .txt extension usually contain text.
An optional software component that adds functionality to an application.
a browser extension
The set of tuples of values that, used as arguments, satisfy the predicate.
A kind of derivative morpheme applied to verbs in Bantu languages.
The ideal in the codomain generated by the image of the given ideal under the given homomorphism.
University programs that are targeted at the broader (usually adults) community whose participants are not full-time enrolled students.
Clipping of hair extension, nail extension, or eyelash extension.
Ellipsis of extension cord.

Noun

The act of extending; a stretching out; enlargement in length or breadth; an increase
A part of a building that has been extended from the original
A numerical code used to specify a specific telephone in a telecommunication network.
A file extension.
Files with the .txt extension usually contain text.
(grammar) A kind of derivative morpheme applied to verbs in Bantu languages.

Synonyms of Extension

annex denotation reference propagation wing elongation prolongation annexe lengthiness university extension extension service

Extension synonyms and antonyms →

Antonyms of Extension

contraction shortening limitation curl

Extension in a Sentence

Next month the house is undergoing an extension.

Due to the unforeseen circumstances, you are allowed an extension of two weeks to complete the task.

Parents who treat their children as an extension of themselves

My research is an extension of the work of my mentor.

Files with the .txt extension usually contain text.

a browser extension

Word Forms & Grammar

extension (countable and uncountable, plural extensions)

Origin of Extension

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

Pronouncing Extension

You say extension as //ɪkˈstɛnʃən//. It has 1 syllable.

Extension: Your Questions Answered

What part of speech is extension?

Extension is a noun.

What is another word for extension?

Words with a similar meaning to extension include annex, denotation and reference. See the full list of extension synonyms and antonyms.

What is the opposite of extension?

The opposite of extension can be expressed with words like contraction, shortening, limitation and curl.