adj
gaseous
GEH-ee-see-uhs
adj
1
Existing in the form of a gas.
"Water becomes gaseous when it boils into steam."
"The tank stores hydrogen in its gaseous form."
How to Use Gaseous
Learner’s notesIn plain EnglishDescribes something that exists as a gas rather than a liquid or solid.
Common pairings
gaseous state
gaseous form
gaseous mixture
Word Forms
more gaseous comparative, most gaseous superlative
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Water becomes _____ when it boils into steam.
Etymology
From "gas" plus the adjective ending "-eous."