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expiration

[ek-spuh-rey-shuh n] /ˌɛk spəˈreɪ ʃən/
noun
1.
a coming to an end; termination; close:
the expiration of a contract.
2.
the act of expiring, or breathing out; emission of air from the lungs.
3.
Archaic. death.
Origin of expiration
late Middle English
1375-1425
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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for expiration

expiration

/ˌɛkspɪˈreɪʃən/
noun
1.
the finish of something; ending; expiry
2.
the act, process, or sound of breathing out
3.
(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
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Word Origin and History for expiration
n.

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
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expiration in Medicine

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

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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expiration in Science
expiration
  (ěk'spə-rā'shən)   
See exhalation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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