air cell
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air′ cell`
n.
a cavity or receptacle of the body that contains air.
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Noun | 1. | air cell - a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways 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 |
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