English dictionary



Hint: With the Firefox addon you can search this dictionary from the browsers search field.

English noun: air sac

1. air sac (body) a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways


Synonymsair cell, alveolus


Broader (hypernym)sac


Part meronymlung

2. air sac (animal) any of the thin-walled extensions of the tracheae of insects


Broader (hypernym)sac


Part meronyminsect

3. air sac (animal) any of the membranous air-filled extensions of the lungs of birds


Broader (hypernym)sac


Part meronymbird









Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
2018 onlineordbog.dk