Extension

[ik-sten-shuh n] /ɪkˈstɛn ʃən/

noun
1.
an act or instance of , lengthening, stretching out, or enlarging the scope of something.
2.
the state of being extended, lengthened, or stretched out.
3.
that by which something is extended or enlarged; an addition:
a four-room extension to a house.
4.
an additional period of time given one to meet an obligation:
My term paper wasn’t finished so I asked for an extension.
5.
something that is expandable or can be extended; an extended object:
a table with drop-leaf extensions.
6.
range or scope of extending; degree of extensiveness; :
the extension of our knowledge.
7.
an additional telephone that operates on the principal line.
8.
Commerce. a written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
9.
Physics. that property of a body by which it occupies space.
10.
Anatomy.

11.
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.
12.
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 (def 5).
13.
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.
14.
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.
15.
Manège. the act of bringing or coming into an extended attitude.
adjective
16.
of or relating to .
/ɪkˈstɛnʃən/
noun
1.
the act of extending or the condition of being extended
2.
something that can be extended or that extends another object
3.
the length, range, etc, over which something is extended; extent
4.
an additional telephone set connected to the same telephone line as another set or other sets
5.
a room or rooms added to an existing building
6.
a delay, esp one agreed by all parties, in the date originally set for payment of a debt or completion of a contract
7.
the property of matter by which it occupies space; size
8.

9.
(med) a steady pull applied to a fractured or dislocated arm or leg to restore it to its normal position See also traction (sense 3)
10.

11.
(logic)

n.

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.

extension ex·ten·sion (ĭk-stěn’shən)
n.
Abbr. ext.

extension
(ĭk-stěn’shən)

1. filename extension.
2. A feature or piece of code which extends a program’s functionality, e.g. a plug-in.
(1997-06-21)