ˌekspəˈrāshən sometimes -(ˌ)spiˈ- or -_spēˈ-, chiefly Brit ˌekˌspīˈ- noun
( -s )
Etymology: Middle English expiracioun, from Latin expiration-, exspiration-, expiratio, exspiratio, from expiratus, exspiratus (past participle of expirare, exspirare ) + -ion-, -io -ion
1. : the act, action, or process of expiring:
a.
(1) : the action or process of releasing air from the lungs through the nose or mouth
(2) : the escape of carbon dioxide from the body protoplasm (as through the blood and lungs or by diffusion)
b. obsolete : the emission of volatile matter : exhalation
the true cause of cold is an expiration from the globe of the earth — Francis Bacon
c. archaic : the last emission of breath death
the attendants did not discern the exact time of his expiration — Samuel Johnson
2. : the fact of coming to an end : termination , close , extinction
what effect the expiration of the excess-profits tax will have on corporate giving — J.A.Morris b. 1904
3. : something that is expired or produced by breathing out
the aspirate “he” which is … a gentle expiration — Granville Sharp