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Definition of: alveolus
(al·vē′ə·ləs) noun plural ·li (-lī)
1. A minute air sac at the end of each bronchiole in the lungs.
2. A tooth socket.
3. An acinus in a racemose gland.
4. One of the cells of a honeycomb. [<L, dim. of alveus a hollow]
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