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| al·ve·o·lus [ al v ələss ] (plural al·ve·o·li [ al v ə l ]) |
noun |
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| Definition: |
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1. air sac in lung: a tiny thin-walled air sac found in large numbers in each lung, through which oxygen enters and carbon dioxide leaves the blood
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2. tooth socket: a socket in the jaw bone in which a tooth is rooted
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| [Late 17th century. < Latin, "little cavity" < alveus "cavity" < alvus "belly"] |
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