pneumatocyst
/ˈnjuːmətəsɪst/ /njuːˈmatə(ʊ)sɪst/ /njʊˈmatə(ʊ)sɪst/Chiefly Zoology and Botany
noun
Originally: the gas-filled chamber of a pneumatophore. Later more widely: any air-filled sac in an organism, especially in an animal body; (Medicine ) a benign intraosseous cyst containing gas or air.
Origin
Mid 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From pneumato- + cyst.
- extravagant
- extravagantly
- extravaganza
- extravasate
- extravasation
- extravascular
- extravehicular
- extravert
- extraverted
- extra virgin
- extrema
- Extremadura
- extreme
- extreme fighting
- extremely
- extremeness
- extreme skier
- extreme skiing
- extremes meet
- extreme unction
- extremism
- extremist
- extremity
- extremophile
- extremum