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ex·pire / ikˈspīr/ • v. 1. [intr.] (of a document, authorization, or agreement) cease to be valid, typically after a fixed period of time: the old contract had expired. ∎  (of a period of time) come to an end: the three-year period has expired. ∎  (of a person) die.2. [tr.] exhale (air) from the lung.

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