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alumnus
alumroot
alunite
alveolar
alveolar ridge
alveolectomy
alveoli
alveolitis
alveolus
Alvin
always
always-on
Alyce clover
alyssum
Alzheimer’s disease
Am (1)
Am (2)
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alveolus

al·ve·o·lus [ al v ələss ] (plural al·ve·o·li [ al v ə l ])


noun 
Definition:
 
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

2. tooth socket: a socket in the jaw bone in which a tooth is rooted

[Late 17th century. < Latin, "little cavity" < alveus "cavity" < alvus "belly"]
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