Hypertext Webster Gateway: "alveolus"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Alveolus \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.
From WordNet (r) 1.7 (wn)
alveolus
n 1: a tiny sac for holding air in the lungs; formed by the
terminal dilation of tiny air passageways [syn: {air sac},
{air cell}]
2: a bony socket in the alveolar ridge that holds a tooth [syn:
{tooth socket}]
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