'Expiration' definitions:

Definition of 'expiration'

From: WordNet
noun
A coming to an end of a contract period; "the expiry of his driver's license" [syn: termination, expiration, expiry]
noun
Euphemistic expressions for death; "thousands mourned his passing" [syn: passing, loss, departure, exit, expiration, going, release]
noun
The act of expelling air from the lungs [syn: exhalation, expiration, breathing out]

Definition of 'Expiration'

From: GCIDE
  • Expiration \Ex`pi*ra"tion\, n. [L. expiratio,exspiratio: cf. F. expiration. See Expire.]
  • 1. The act of expiring; as: (a) (Physiol.) The act or process of breathing out, or forcing air from the lungs through the nose or mouth; as, respiration consists of inspiration and expiration; -- opposed to inspiration. (b) Emission of volatile matter; exhalation. [1913 Webster]
  • The true cause of cold is an expiration from the globe of the earth. --Bacon. (c) The last emission of breath; death. "The groan of expiration." --Rambler. (d) A coming to a close; cessation; extinction; termination; end. [1913 Webster]
  • Before the expiration of thy time. --Shak. [1913 Webster]
  • 2. That which is expired; matter breathed forth; that which is produced by breathing out, as a sound. [1913 Webster]
  • The aspirate "he," which is . . . a gentle expiration. --G. Sharp. [1913 Webster]

Synonyms of 'expiration'

From: Moby Thesaurus