(definition) by Webster 1913 Tue Dec 21 1999 at 21:42:03

Air" cell` (#).

1. Bot.

A cavity in the cellular tissue of plants, containing air only.

2. Anat.

A receptacle of air in various parts of the system; as, a cell or minute cavity in the walls of the air tubes of the lungs; the air sac of birds; a dilatation of the air vessels in insects.

 

© Webster 1913.

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