Air cell

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.

Thesaurus

Noun

1.

air cell - a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways air sac, alveolus lung - either of two saclike respiratory organs in the chest of vertebrates; serves to remove carbon dioxide and provide oxygen to the blood sac - a structure resembling a bag in an animal