alveoli
 alveolus的複數形


 Al·ve·o·lus n.; pl. Alveoli
 1. A cell in a honeycomb.
 2. Zool. 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.

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 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]
      [also: alveoli (pl)]


 alveoli
      See alveolus