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extension

ex·ten·sion

extension

 
 
pronunciation:
ihk sten shn
part of speech: noun
definition 1: the act of extending or condition of being extended.
The kids welcomed the extension of their vacation on the beach.We were all happy about the teacher's extension of the deadline.
synonyms:
enlargement, expansion, prolongation
antonyms:
contraction
similar words:
reach, stretch
definition 2: something that extends another thing; an addition.
They are building an extension to the old school building.
synonyms:
addition, annex
similar words:
accessory, appendix, branch, extra, part, piece
definition 3: an extra telephone line connected to the main line.
Dial the number for the office and ask for Mr. Swan's extension.
derivations: extensional (adj.), extensionality (n.)