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Dictionary

  Definition of air sac
  1. any of the membranous air-filled extensions of the lungs of birds
  2. any of the thin-walled extensions of the tracheae of insects
  3. a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways
Similar Words: alveolus, air cell

 

Part Meronyms: bird, insect, lung

 

Anagrams: sciara

 

 
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