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Synonyms

expiration

American  
[ek-spuh-rey-shuhn] / 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.


expiration British  
/ 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

expiration Scientific  
/ ĕk′spə-rāshən /

Other Word Forms

  • nonexpiration noun
  • preexpiration noun

Etymology

Origin of expiration

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

Compare meaning

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Explanation

Expiration is what happens when a lease or contract — or a period of time — has ended. The expiration of your library card means you need to sign up for a new one. You might notice that your container of yogurt is marked with a date — it's the expiration date, or the day the product is no longer fresh enough to be sold or eaten. Other things with expiration dates include magazine subscriptions, rental agreements, and drivers' licenses. All of these are a sort of contract that eventually ends, or expires. When you breathe out, that's technically also expiration, from the Latin expirare, "breathe out," or "breathe one's last breath."

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Vocabulary lists containing expiration

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Meanwhile, Farxiga inventory reductions ahead of the patent expiration could weigh on the drug’s sales, the analysts say.

From The Wall Street Journal • Apr. 10, 2026

Last week it extended the expiration of its tender offer to acquire Arcellx to April 24.

From The Wall Street Journal • Apr. 8, 2026

It was some oversold buying, some short covering, and options expiration.

From Barron's • Apr. 1, 2026

Grocery Outlet, founded in 1946 in San Francisco, is known for selling discounted overstock items, such as holiday foods and drinks nearing expiration.

From Los Angeles Times • Mar. 30, 2026

She rummaged through, handing Boaz antibacterial wipes, a tiny bottle of peroxide, Band-Aids, and a few packets of ibuprofen that had an expiration date of two years prior.

From "Night Owls" by A.R. Vishny