- an act or instance of extending, lengthening, stretching out, or enlarging the scope of something.
- the state of being extended, lengthened, or stretched out.
- that by which something is extended or enlarged; an addition: a four-room extension to a house.
- an additional period of time given one to meet an obligation: My term paper wasn't finished so I asked for an extension.
- something that is expandable or can be extended; an extended object: a table with drop-leaf extensions.
- range or scope of extending; degree of extensiveness; extent: the extension of our knowledge.
- an additional telephone that operates on the principal line.
- Commerce. a written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
- Physics. that property of a body by which it occupies space.
- the act of straightening a limb.
- the position that a limb assumes when it is straightened.
- Surgery. the act of pulling the broken or dislocated part of a limb in a direction from the trunk, in order to bring the ends of the bone into their natural situation.
- Also called extent. Logic. the class of things to which a term is applicable, as “the class of such beings as Plato and Alexander” to which the term “man” is applicable.Compare intension(def 5).
- Mathematics. a function having a domain that includes the domain of a given function and that has the same value as the given function at each point in the domain of the given function.
- Also called file extension. Computers. one or more characters at the end of a filename, usually following a period, used to indicate the type of file.
- Manège. the act of bringing or coming into an extended attitude.
- of or relating to extension courses.
Origin of extension
Synonyms for extensionSee more synonyms for on Thesaurus.com
Antonyms for extension
Related Words for extensiondelay, increase, development, expansion, postponement, purview, sweep, production, supplement, radius, arm, stretch, broadening, amplification, span, addition, adjunct, spread, branch, scope
Examples from the Web for extension
Contemporary Examples of extension
But only for the family; inmates cannot be awarded more than $10,000 because of an extension of the Son of Sam Law.A Million Ways to Die in Prison
December 8, 2014
It is also, by extension, a show about the cultural impact of religion.The Good Wife’s Religion Politics: Voters Have No Faith in Alicia's Atheism
November 24, 2014
What he meant was that he personally, and by extension all Christians, should not be judgmental.Is Pope Francis Backpedaling on Gays?
November 19, 2014
They are 'other,' newly visible, and symbols of the social and, by extension, economic changes in society and in New York.Is Brooklyn Becoming Unsafe for Gays? It Depends On Which Ones
October 18, 2014
He carried an extension cord in case he needed to recharge at one of his emergency spots.How Brooklyn’s First Ice Cream Girl Fought City Hall–and Won
October 13, 2014
Historical Examples of extension
The complexity of life is shown by the extension of the necessity of choice.The Call of the Twentieth Century
David Starr Jordan
I expect the Marchesa got him an extension of leave from the Colonel.Casanova's Homecoming
The North did not believe in slavery, or at least in the extension of slavery.The Nation in a Nutshell
George Makepeace Towle
In recent years an extension of nine miles has been added to it.The Railroad Question
In larger boats the jib-boom is an extension of the bowsprit.Boys' Book of Model Boats
Raymond Francis Yates
- the act of extending or the condition of being extended
- something that can be extended or that extends another object
- the length, range, etc, over which something is extended; extent
- an additional telephone set connected to the same telephone line as another set or other sets
- a room or rooms added to an existing building
- a delay, esp one agreed by all parties, in the date originally set for payment of a debt or completion of a contract
- the property of matter by which it occupies space; size
- the act of straightening or extending an arm or leg
- its position after being straightened or extended
- med a steady pull applied to a fractured or dislocated arm or leg to restore it to its normal positionSee also traction (def. 3)
- a service by which some of the facilities of an educational establishment, library, etc, are offered to outsiders
- (as modifier)a university extension course
- the class of entities to which a given word correctly applies: thus, the extension of satellite of Mars is the set containing only Deimos and PhobosCompare intension (def. 1a)
- conservative extensiona formal theory that includes among its theorems all the theorems of a given theory
Word Origin for extension
c.1400, from Old French extension (14c.) and directly from Latin extensionem/extentionem (nominative extensio/extentio), noun of action from past participle stem of extendere (see extend). In a concrete sense, "extended portion of something" (a railroad, etc.), from 1852. Telephone sense is from 1906.
- The act of straightening or extending a flexed limb.
- A pulling or dragging force exerted on a limb in a distal direction.
- Mathematics A set that includes a given and similar set as a subset.
- Computer Science A set of characters that follow a filename and are separated from it by a period, used to identify the kind of file.