Meaning of “expiration” in the English Dictionary

american-english dictionary

"expiration" in American English

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expirationnoun [ U ]

us /ˌek·spəˈreɪ·ʃən/

the end of a period of time during which an agreement or official document can be used:

He stayed on past the expiration of his tourist visa.

(Definition of “expiration” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"expiration" in Business English

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expirationnoun [ U ]

uk /ekspɪˈreɪʃən/ us US

→  expiry :

Trading was brisk as the quarterly expiration of options and futures spurred demand for shares.

(Definition of “expiration” from the Cambridge Business English Dictionary © Cambridge University Press)