Synonyms / Related
Definitions of air sac:
- noun: any of the membranous air-filled extensions of the lungs of birds
- noun: any of the thin-walled extensions of the tracheae of insects
- noun: a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways
Search for air sac at other dictionaries: OneLook, Oxford, American Heritage, Merriam-Webster, Wikipedia
(New!) Usage examples...