Expiration

[Sarah]

The act or process of breathing out, or forcing air from thelungs through the nose or mouth; as, respiration consists ofinspiration and expiration; -- opposed to Ant: inspiration.(b) Emission of volatile matter; exhalation.The true cause of cold is an expiration from the globe of the earth.Bacon.

[Merna]

the situation in which something that lasts for a fixed length of time comes to an end or stops being in use:

[Marquetta]

The ending of the fixed period for which a contract is valid.