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the last date that a product, as food, should be used before it is considered spoiled or ineffective, usually specified on the label or package.


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  • Expiratory

    [ik-spahyuh r-uh-tawr-ee, -tohr-ee] /ɪkˈspaɪər əˌtɔr i, -ˌtoʊr i/ adjective 1. pertaining to the of air from the lungs. /ɪkˈspaɪərətərɪ; -trɪ/ adjective 1. relating to the expulsion of air from the lungs during respiration expiratory ex·pi·ra·to·ry (ĭk-spī’rə-tôr’ē) adj. Of, relating to, or involving the expiration of air from the lungs.

  • Expiratory reserve volume

    expiratory reserve volume n. Abbr. ERV The maximal volume of air, usually about 1000 milliliters, that can be expelled from the lungs after normal expiration. Also called reserve air, supplemental air.

  • Expiratory stridor

    expiratory stridor n. A singing sound during general anesthesia due to the semi-approximated vocal cords offering resistance to the escape of air.

  • Expire

    [ik-spahyuh r] /ɪkˈspaɪər/ verb (used without object), expired, expiring. 1. to come to an end; terminate, as a contract, guarantee, or offer. 2. to emit the last breath; die. 3. to breathe out. 4. to die out, as a fire. verb (used with object), expired, expiring. 5. to breathe out; emit (air) from the lungs. […]

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