n. [ L. expiatio. ] The act of expilating or stripping off; plunder; pillage. [ Obs. ] [ 1913 Webster ]

This ravenous expilation of the state. Daniel. [ 1913 Webster ]

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 ]

adj. bearing a date after which it is no longer valid or salable; -- of a security, option, or perishable item. [ British ]
Syn. -- expiring, dated. [ PJC ]