alveolus

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alveolus

alveolus (ălvēˈələs): see lungs.
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alveolus

[al′vē·ə·ləs]
(anatomy)
A tiny air sac of the lung.
A tooth socket.
A sac of a compound gland.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

alveolus

1. any small pit, cavity, or saclike dilation, such as a honeycomb cell
2. any of the sockets in which the roots of the teeth are embedded
3. any of the tiny air sacs in the lungs at the end of the bronchioles, through which oxygen is taken into the blood
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005