alveolus Meaning, Definition & Usage
noun a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways
air sac; air cell.
noun a bony socket in the alveolar ridge that holds a tooth
EtymologyL., a small hollow or cavity, dim. of
A cell in a honeycomb.
(Zoöl.) A small cavity in a coral, shell, or fossil
(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.