ex‧pir‧y /ɪkˈspaɪəri $ -ˈspaɪri/ noun [uncountable] British English

1. the end of a period of time during which an official document can legally be used, or the end of a period of authority Synonym : 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.

2. expiry date the date after which something is not safe to eat or can no longer be used Synonym : 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.
⇒ sell-by date

[TahlilGaran] Dictionary of Contemporary English ▲