Try Our Apps


90s Slang You Should Know


[ek-spuh-rey-shuh n] /ˌɛk spəˈreɪ ʃən/
a coming to an end; termination; close:
the expiration of a contract.
the act of expiring, or breathing out; emission of air from the lungs.
Archaic. death.
Origin of expiration
late Middle English
1375-1425; late Middle English expiracioun < Latin expīrātiōn- (stem of expīrātiō), equivalent to expīrāt(us) (past participle of ex(s)pīrāre to expire) + -iōn- -ion
Related forms
nonexpiration, noun
preexpiration, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for expiration
Contemporary Examples
Historical Examples
  • At the expiration of the appointed time, Giacomo returns, and hears that the princess is going to be married.

    Zoological Mythology (Volume II) Angelo de Gubernatis
  • Crassus, upon the expiration of his consulship, repaired to his province.

  • Before the expiration of his sentence, the fourth was convicted.

    Secret Band of Brothers Jonathan Harrington Green
  • There was a light hiss like an inspiration and expiration of air, a ghastly sound.

    The Silent Bullet Arthur B. Reeve
  • On the expiration of the three days, it was usual to find that neither of them wanted a separation.

    The Physical Life of Woman: Dr. George H Napheys
British Dictionary definitions for expiration


the finish of something; ending; expiry
the act, process, or sound of breathing out
(rare) a last breath; death
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for expiration

early 15c., "vapor, breath," from Middle French expiration, from Latin expirationem/exspirationem (nominative expiratio/exspiratio), noun of action from past participle stem of expirare/exspirare (see expire). Meaning "termination, end, close" is from 1560s.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
expiration in Medicine

expiration ex·pi·ra·tion (ěk'spə-rā'shən)
See exhalation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
expiration in Science
See exhalation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for expiration

Many English speakers likely know this word

Word Value for expiration

Scrabble Words With Friends

Nearby words for expiration