extension
Americannoun
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an act or instance of extending, lengthening, stretching out, or enlarging the scope of something.
- Synonyms:
- dilation, increase, enlargement, expansion
- Antonyms:
- contraction
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the state of being extended, lengthened, or stretched out.
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that by which something is extended or enlarged; an addition.
a four-room extension to a house.
- Synonyms:
- continuation, protraction
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an additional period of time given one to meet an obligation.
My term paper wasn't finished so I asked for an extension.
- Synonyms:
- delay
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something that is expandable or can be extended; an extended object.
a table with drop-leaf extensions.
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range or scope of extending; degree of extensiveness; extent.
the extension of our knowledge.
- Synonyms:
- limit
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an additional telephone that operates on the principal line.
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Commerce. a written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
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Physics. that property of a body by which it occupies space.
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Anatomy.
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the act of straightening a limb.
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the position that a limb assumes when it is straightened.
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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.
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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.
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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.
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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.
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Manège. the act of bringing or coming into an extended attitude.
adjective
noun
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the act of extending or the condition of being extended
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something that can be extended or that extends another object
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the length, range, etc, over which something is extended; extent
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an additional telephone set connected to the same telephone line as another set or other sets
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a room or rooms added to an existing building
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a delay, esp one agreed by all parties, in the date originally set for payment of a debt or completion of a contract
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the property of matter by which it occupies space; size
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the act of straightening or extending an arm or leg
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its position after being straightened or extended
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med a steady pull applied to a fractured or dislocated arm or leg to restore it to its normal position See also traction
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a service by which some of the facilities of an educational establishment, library, etc, are offered to outsiders
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( as modifier )
a university extension course
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logic
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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 Phobos Compare intension
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a formal theory that includes among its theorems all the theorems of a given theory
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Mathematics A set that includes a given and similar set as a subset.
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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.
Other Word Forms
- extensional adjective
- extensionalism noun
- extensionality noun
- extensionally adverb
- extensionless adjective
- nonextension noun
- nonextensional adjective
- proextension adjective
- superextension noun
Etymology
Origin of extension
1350–1400; Middle English < Latin extēnsiōn- (stem of extēnsiō ). See extensive, -ion
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
After last season, the Rams wasted no time finalizing extensions for their two most important employees — McVay and Snead.
From Los Angeles Times
The shirts’ release Thursday coincided with the announcement that the first phase of the Metro D Line subway extension will open May 8, with three new stations connecting downtown Los Angeles to Beverly Hills.
From Los Angeles Times
The tone Gorillaz achieved on “The Mountain” is an extension of that.
From Los Angeles Times
On Monday, the Bureau of Street Services confirmed that it will apply with the state for a two-year extension to allow more time to begin the transportation projects in Boyle Heights, Skid Row and Wilmington.
From Los Angeles Times
The new stations mark the first phase of a rail extension project on the Metro D line, also known as the Purple Line, beneath Wilshire Boulevard.
From Los Angeles Times
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
