expiration
noun
ex·pi·ra·tion
ˌek-spə-ˈrā-shən 
1
a
: the last emission of breath : death
b(1)
: the act or process of releasing air from the lungs through the nose or mouth : exhalation
(2)
: the escape of carbon dioxide from the body protoplasm (as through the blood and lungs or by diffusion)
2
: the fact of coming to an end or the point at which something ends : termination
Examples of expiration in a Sentence
one month after the expiration of the contract
directed that upon her expiration her splendid Italian-style villa be given to the public as a museum
Recent Examples on the Web
Sponsor is not responsible if winner is unable to use the hotel stay or any other Prize element due to unavailability, blackout dates, expiration, failure to satisfy applicable redemption requirements, or other restrictions imposed by the applicable provider.
—
AJC.com, 18 June 2026
The data may only capture some of the strain Americans are currently feeling, as the study was conducted before the expiration of Affordable Care Act (ACA) tax subsidies in early 2026 caused premiums to spike — prompting some Americans to forgo insurance.
—Mary Cunningham, CBS News, 18 June 2026
The lease expiration has prompted some in the community to urge the city to find ways to acknowledge past harms and the barriers still present to Black communities today.
—Kamal Morgan, Fort Worth Star-Telegram, 18 June 2026
Soon after, in March, the super and other landlord representatives began knocking on doors in the building, asking tenants to sign a form notifying them of the upcoming J-51 expiration.
—Olivia Bensimon, Curbed, 17 June 2026
See All Example Sentences for expiration
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AJC.com, 18 June 2026
The data may only capture some of the strain Americans are currently feeling, as the study was conducted before the expiration of Affordable Care Act (ACA) tax subsidies in early 2026 caused premiums to spike — prompting some Americans to forgo insurance.
—Mary Cunningham, CBS News, 18 June 2026
The lease expiration has prompted some in the community to urge the city to find ways to acknowledge past harms and the barriers still present to Black communities today.
—Kamal Morgan, Fort Worth Star-Telegram, 18 June 2026
Soon after, in March, the super and other landlord representatives began knocking on doors in the building, asking tenants to sign a form notifying them of the upcoming J-51 expiration.
—Olivia Bensimon, Curbed, 17 June 2026
See All Example Sentences for expiration
Cite this Entry
“Expiration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/expiration. Accessed 20 Jun. 2026.
Copy CitationKids Definition
expiration
noun
ex·pi·ra·tion
ˌek-spə-ˈrā-shən
1
a
: the expelling of air from the lungs in breathing
b
: air or vapor expelled from the lungs
2
: the fact of coming to an end
Medical Definition
expiration
noun
ex·pi·ra·tion
ˌek-spə-ˈrā-shən
1
a(1)
: the act or process of releasing air from the lungs through the nose or mouth : exhalation
(2)
: the escape of carbon dioxide from the body protoplasm (as through the blood and lungs or by diffusion)
b
archaic
: the last emission of breath : death
2
: something produced by breathing out
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