EXPIRATION definition: a coming to an end; termination; close. See examples of expiration used in a sentence.

EXPIRATION meaning: 1. the situation in which something that lasts for a fixed length of time comes to an end or stops…. Learn more.

Definition of expiration noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

ex•pi•ra•tion (ˌɛk spəˈreɪ ʃən) n. 1. termination; close: the expiration of a contract. 2. the act of breathing out air from the lungs.

There are nine meanings listed in OED's entry for the noun expiration, six of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Apr 19, 2026 · Noun expiration (countable and uncountable, plural expirations) An act, process , or instance of expiring. (uncountable) The act or process of breathing out, or forcing air from the lungs …

Expiration refers to the end of a period of validity or usefulness. This could relate to time-sensitive items such as food, contracts, legal documents, licenses, medicines, or promotional offers, where after a …

In legal contexts, expiration refers to the end of a contract’s validity or term. Contracts often have a specified expiration date or duration after which they become void or require renewal.

The meaning of EXPIRATION is the last emission of breath : death. How to use expiration in a sentence.

Expiration refers to the conclusion or ending of a period of time, often associated with contracts, licenses, or the freshness of perishable items.