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air sac

noun

Definition of air sac

  1. 1 :  one of the air-filled spaces in the body of a bird connected with the air passages of the lungs

  2. 2 :  alveolus 1b

  3. 3 :  a thin-walled dilation of a trachea occurring in many insects



Circa 1805

First Known Use of air sac

circa 1805


AIR SAC Defined for Kids

air sac

noun

Definition of air sac

  1. :  one of the small pouches in the lungs where oxygen and carbon dioxide are exchanged




Medical Dictionary

air sac

noun

Medical Definition of air sac

  1. :  alveolus b




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