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ex‧pir‧y
[uncountable] British English
[uncountable] British English1 the end of a period of time during which an official document can legally be used, or the end of a period of authority [= expiration American English]
expiry of the formal expiry of the presidential term in September Only seven minutes remained before the expiry of the noon deadline.
the formal expiry of the presidential term in SeptemberOnly seven minutes remained before the expiry of the noon deadline.2 the date after which something is not safe to eat or can no longer be used [= expiration date American English] Check the expiry date on your passport. Eggs must be marked with an expiry date that is ten days from the date of packing.
expiry date
Check the expiry date on your passport.Eggs must be marked with an expiry date that is ten days from the date of packing.