Dictionaryal•ve•o•lusPronunciation: (al-vē'u-lus), [key] —n., —pl. -liPronunciation: (-lī"). [key] 1. a little cavity, pit, or cell, as a cell of a honeycomb. 2. an air cell of the lungs, formed by the terminal dilation of tiny air passageways. 3. one of the terminal secretory units of a racemose gland. 4. the socket within the jawbone in which the root or roots of a tooth are set. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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