American Dictionary

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Definition expiration in American English

expiration noun

[uncountable] noun
/ˌekspɪˈreɪʃ(ə)n/
1

the end of a period of time during which an agreement, offer, or official document is in force or can be used. The British word is expiry

Example

the expiration of a lease

Synonyms and related words
Definition expiration in American English