air_sac | ||
1. | [ noun ] (anatomy,zoology) any of the thin-walled extensions of the tracheae of insects | |
Related terms: | sac insect | |
2. | [ noun ] (anatomy,zoology) a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways | |
Synonyms: | alveolus air_cell | |
Related terms: | sac lung | |
3. | [ noun ] (anatomy,zoology) any of the membranous air-filled extensions of the lungs of birds | |
Related terms: | sac bird | |
Similar spelling: |
air_sock air_sick air_jacket air_gas |