From Longman Dictionary of Contemporary Englishexpirationex‧pir‧a‧tion /ˌekspəˈreɪʃən/ noun [uncountable] 1 x-refthe ending of a fixed period of time2 → expiration date
Examples from the Corpus
expiration• Guidelines require that an expiration date appear on every page of an Internet-Draft.• Beer makers such as Anheuser-Busch complained two years ago that the county was selling beer past its expiration date.• Sandoz and CoCensys have mutually agreed to discontinue their agreement after its March expiration.• In August that year $ 25 million worth of vaccine was backlogged and in danger of passing its six-month expiration date.• At the expiration of the time thus set aside, debate ends.• The demand was premature, because it was made and served before the expiration of a month from the 31 July bill.• the expiration of the treatyFrom Longman Business Dictionaryexpirationex‧pir‧ation /ˌekspəˈreɪʃən/ noun [uncountable] American English when an official document, period of time, or right to buy shares, currency etc expiresSYNexpiry BrEthe expiration of the trade agreementThe first cycle of options have expiry dates in January, April, July, and October. 