01 n. The act of expiring
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1.
The act of expiring(Physiol.)“The true cause of cold is an expiration from the globe of the earth.” — Bacon.
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2.
The last emission of breath; death.
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3.
A coming to a close; cessation; extinction; termination; end.“Before the expiration of thy time.” — Shak.
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4.
That which is expired; matter breathed forth; that which is produced by breathing out, as a sound.“The aspirate “he,” which is . . . a gentle expiration.” — G. Sharp.