of, concerned with, or having the characteristics of a gas
WordReference Random House Learner's Dictionary of American English © 2025
gas•e•ous /ˈgæsiəs, ˈgæʃəs/USA pronunciation adj.
WordReference Random House Unabridged Dictionary of American English © 2025- having the form or characteristics of gas:a gaseous smell.
gas•e•ous
(gas′ē əs, gash′əs),USA pronunciation adj.
gas′e•ous•ness, gas•e•i•ty
(ga sē′i tē),USA pronunciation n.
- Physicsexisting in the state of a gas; not solid or liquid.
- Physicspertaining to or having the characteristics of gas.
- [Informal.]lacking firmness or solidity;
uncertain;
not definite. - gassy (defs. 1, 3).
- gas + -eous 1790–1800
Collins Concise English Dictionary © HarperCollins Publishers::
'gaseous' also found in these entries (note: many are not synonyms or translations):
-eous
- Freon
- Graham
- Haber process
- Red Spot
- actinon
- aeriform
- air sac
- ammonia
- argon
- atmosphere
- biofuel
- blackleg
- bleaching powder
- boil
- butane
- butylene
- char
- chlorofluorocarbon
- chlorofluoromethane
- chromosphere
- colloid
- comet
- condense
- condensed
- critical point
- critical volume
- cyclopropane
- effluvium
- electrode
- electronics
- emanation
- ethane
- ethylene
- ethylene oxide
- evaporate
- fluid mechanics
- fog
- gas
- gas turbine
- gaseous diffusion
- gasiform
- gox
- heat of sublimation
- helium
- hyperbaric
- inert gas
- krypton
- laser
- liquid