That may expire; capable of being brought to an end.

plural of expirer

plural of expirant

Of or relating to expiration.

Synonym of expiratory

(of a soldier, prisoner etc.) Whose time has expired, having served their time. / Where a period of time, during which something can be sold or used, has expired.

Worn out, outdated, at the end of its useful life.

A date by which an object either should not be used or loses its value, depending upon the item.

plural of expiration date