pneumatic
(adjective)
having cavities filled with air
Examples of pneumatic in the following topics:
-
Characteristics of Birds
- Several modifications are found in birds to reduce body weight, including pneumatization of bones.
- Pneumatic bones are hollow rather than filled with tissue .
- Pneumatic bones are not found in all birds; they are more extensive in large birds than in small birds.
- Not all bones of the skeleton are pneumatic, although the skulls of almost all birds are.
- The air sacs that extend into bones, making them pneumatic, also join with the lungs and function in respiration.