alveolus

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alveolus

(ălvē`ələs): see lungslungs,
elastic organs used for breathing in vertebrate animals, excluding most fish, which use gills, and a few amphibian species that respire through the skin. The word is sometimes applied to the respiratory apparatus of lower animals.
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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.

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
References in periodicals archive ?
The main difference between the two structures is that in the bee's alveolate architecture re petition is the rule; in the human-made maze it is a lure.
42) extremely well preserved, fusiform, glossy, mostly reddish in color but varying from gray to light brown or yellowish, surface slightly alveolate when viewed under magnification.
Loss of saccate pollen: the only likely vestige of this in flowering plants is the tectate- columellate or alveolate exine, the site for proteins involved in the cell recognition system.