One who or that which expires.

plural of expirer

One who expires or is expiring.

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

plural of expiration

(intransitive) To die. / (intransitive) To lapse and become invalid. / (intransitive) To come to an end; to conclude. / (transitive, intransitive) To exhale; to breathe out.

The act of expiring. / The act or process of breathing out, or forcing air from the lungs through the nose or mouth / Emission of volatile matter; exhalation.

Ending, terminating, dying.

present participle of expire

that is no longer valid / that has been breathed out / dead