expiratory reserve volume
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expiratory reserve volume
[ek′spī·rə‚tȯr·ē ri¦zərv ‚väl·yəm] (physiology)
At the end of a normal expiration, the quantity of air that can be expelled by forcible expiration.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.