extension

noun

The act of extending; a stretching out; enlargement in length, breadth, or time; an increase.

The state of being extended.

That property of a body by which it occupies a portion of space (or time, e.g. "spatiotemporal extension").

(mathematics, group theory, of a group G by a group H) A short exact sequence 1→H→E→G→1, or the group E therein.

(mathematics, homological algebra, of an object A by an object B in an abelian category) 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.

(semantics) Capacity of a concept or general term to include a greater or smaller number of objects; — correlative of intension.

(linguistics, semantics) semantic widening, broadening of meaning

(banking, finance) A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.

(medicine) The operation of stretching a broken bone so as to bring the fragments into the same straight line.

(weightlifting) An exercise in which an arm or leg is straightened against resistance.

(fencing) A simple offensive action, consisting of extending the weapon arm forward.

(telecommunications) A numerical code used to indicate a specific telephone in a telecommunication network.

(computing) An optional software component that adds functionality to an application.

(logic) The set of tuples of values that, used as arguments, satisfy the predicate.

(grammar) A kind of derivative morpheme applied to verbs in Bantu languages.

(ring theory, of an ideal in the domain of a ring homomorphism) The ideal in the codomain generated by the image of the given ideal under the given homomorphism.

(education) University programs that are targeted at the broader (usually adults) community whose participants are not full-time enrolled students.

(computing) Ellipsis of file extension. [A short series of text characters at the end of a computer filename, used to indicate the type of contents and the software that will be required to operate or open it.]

(cosmetics, chiefly in the plural) Clipping of hair extension, nail extension, or eyelash extension. [A length of hair which is attached to one's normal hair to make it longer.]

Roots

tendotens- · Latin · stretch

Synonyms for extension

prolongationn lengthinessn elongationn lengtheningn protractionn expansionn stretchingn wideningn annexn lengthn continuancen

Synonyms & related words for extension

Find synonyms, related words, and the definition of extension — including prolongation, lengthiness, elongation, lengthening, protraction, expansion. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to extension

Explore words related to extension — words associated with it, words that go with it, and its nearest matches in meaning. Related words include hyperextension, extensity, coextend, extensionally, extend, extendability, tensility, extendable. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for extension

Common synonyms for extension include prolongation, lengthiness, elongation, lengthening, protraction, expansion, stretching, widening — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does extension come from?

The word extension breaks down into one root of Latin origin: the root tens-, from Latin tendo (“stretch”). Explore each root to see other English words built from the same source.