Definitions for: Alveolus


[n] a bony socket in the alveolar ridge that holds a tooth
[n] a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways



Webster (1913) Definition: Al*ve"o*lus ([a^]l*v[=e]"[-o]*l[u^]s), n.; pl.
Alveoli (-l[imac]). [L., a small hollow or cavity, dim. of
alveus: cf. F. alv['e]ole. See Alveary.]
1. A cell in a honeycomb.

2. (Zo["o]l.) A small cavity in a coral, shell, or fossil

3. (Anat.) A small depression, sac, or vesicle, as the socket
of a tooth, the air cells of the lungs, the ultimate
saccules of glands, etc.

Synonyms: air cell, air sac, tooth socket

See Also: alveolar process, alveolar ridge, gum ridge, lung, sac, socket

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