Word Study
air pressure |
air pump |
air raid |
air reconnaissance |
air rifle |
air sac
| air search radar
| air shaft
| air sick
| air sickness
| air sock
air sac
WORDNET DICTIONARY
Noun air sac has 3 senses
- air sac(n = noun.body) air cell, alveolus - a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways; Array is a part of lung
- air sac(n = noun.animal) Array - any of the thin-walled extensions of the tracheae of insects; Array is a part of insect
- air sac(n = noun.animal) Array - any of the membranous air-filled extensions of the lungs of birds; Array is a part of bird
is a kind of sac
is a kind of sac
is a kind of sac
CIDE DICTIONARY
air sac,
- One of the spaces in different parts of the bodies of birds, which are filled with air and connected with the air passages of the lungs; an air cell. [1913 Webster]
- An alveolus. [PJC]
For further exploring for "air sac" in Webster Dictionary Online
