extension

ex-ten-sion · noun

imported

Definitions

noun

  1. 1.

    A part added to a building to make it larger.

  2. 2.

    An additional period of time allowed for something.

  3. 3.

    A telephone line connected to the main system.

  4. 4.

    A file format identifier in computing.

  5. 5.

    The action of extending or state of being extended.

Forms

plural: extensions

Phrases & expressions

  • •
    Extension cord — An electrical cable with a plug and socket.
  • •
    Hair extensions — Additional hair pieces.
  • •
    By extension — As a further development of an idea.

Related words

Antonyms: contraction, reduction
See also: extend, extended, extensive
Synonyms: addition, expansion, prolongation

Etymology

From Latin extensio meaning "a stretching out," from extendere meaning "to stretch out."