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alveolus (s) (noun), alveoli (pl)
A small pit or cavity: An alveolus is one of the sockets of the roots of the teeth in the mouth.

An alveolus can also be the very small air sacs at the end of the bronchioles in the lungs through which oxygen is taken into the blood.

This entry is located in the following unit: alveolo-, alveol-, alve-, alveat- (page 1)
Word Entries at Get Words: “alveoli”
alveolus (s) (noun), alveoli (pl)
One of the many thousands of tiny air sacs in the lungs: The alveoli are important for the exchange of oxygen and carbon dioxide and this process takes place between air and the bloodstream.
This entry is located in the following unit: Anatomy and Related Anatomical Terms (page 1)