noun

expiration

ek-spuh-RAY-shuhn/ˌekspəˈreɪʃn/

The ending of a period during which something lasts or remains valid.

The marked ticket and empty hourglass indicate expiration of its validity.

A simple expired admission ticket lies beside an hourglass whose sand has run out.

Etymology

exLatinout

+piraLatinbreathe

+tionLatinact or process

“Breathing out” also meant breathing one's last, hence dying or coming to an end. Expiration extends that ending to the validity of things such as laws, patents, and treaties.

In context

Progressive Discussions52:54

usually a an expiration date on drugs and and nutritional supplements it's not like written in stone it's not like it there's this kind of a grace period after the expiration date

Right-Wing Pastor Says the Poor Should Starve to Death-GOP Says Pope is Too Much Like Jesus

More examples

Check the expiration date before using that coupon.
After the warranty's expiration, you must pay for repairs.
You can renew your license before its expiration.

Forms

expiration · expirations

expire verb — To reach the end of its validity.

Similar words

end: A general stopping point, not necessarily a scheduled one.
termination: May involve deliberately ending something before its scheduled expiration.
lapse: Often emphasizes lost validity through failure to renew or maintain.