What is the meaning of air sac?

noun

  • A tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways.
  • Any of the thin-walled extensions of the tracheae of insects.
  • Any of the membranous air-filled extensions of the lungs of birds. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). air sac. Retrieved September 21, 2026, from http://smartdefine.org/air_sac/definitions/1200021
ChicagoWordNet. 2010. "air sac" http://smartdefine.org/air_sac/definitions/1200021 (accessed September 21, 2026).
HarvardWordNet 2010, air sac, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/air_sac/definitions/1200021>.
MLAWordNet. "air sac" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/air_sac/definitions/1200021>
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