Lexic.us

Definition of Air sac

1. Noun. A tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways.

2. Noun. Any of the thin-walled extensions of the tracheae of insects.

3. Noun. Any of the membranous air-filled extensions of the lungs of birds.

Medical Definition of Air sac

1. Thin-walled sacs or spaces which function as a part of the respiratory system in birds, fishes, insects, and mammals. The sacs are filled with air and connected with the air passages of the lungs; an air cell. Source: Websters Dictionary (04 Jul 1999)

Lexicographical Neighbors of Air Sac

air pumps air purifier air quality maintenance area air quote air quotes air rage air raid air raid siren air raids air reconnaissance

air resistance air ride air rifle air rifles air rights air sac (current term) air scooter air scooters air search radar air shaft

air shed air sheds air ship air ships air show air shower air shows air sick air sickness air sign

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