1
: having the form of or being gas
also
: of or relating to gases
2
a
: lacking substance or solidity
b
: gassy sense 3
… trick phrases and gaseous circumlocutions …—
Edwin Newman
Edwin Newman
gaseousness
noun
Synonyms of gaseous
Examples of gaseous in a Sentence
a substance changing from a liquid to a gaseous state
a pompous professor known for his gaseous lectures that often put students to sleep
Recent Examples on the Web
The same is true for gaseous anhydrous ammonia fertilizer.
—Edward Lotterman, Twin Cities, 29 Mar. 2026
This works by ionizing atoms belonging to a gaseous propellant, such as xenon or krypton, and then accelerating those ions out through a nozzle to provide thrust.
—Keith Cooper, Space.com, 27 Mar. 2026
Instead of using cryogenic hydrogen, the company is using gaseous hydrogen that's been pressurized to 700 atmospheres.
—David Szondy
march 26, New Atlas, 26 Mar. 2026
The study authors also found that the ratio of gaseous carbon dioxide to ice differs significantly from what is seen in star-forming regions, indicating that the processes controlling ice formation or alteration in planetary nebulae may be very different.
—Rupendra Brahambhatt, Interesting Engineering, 15 Mar. 2026
See All Example Sentences for gaseous
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Edward Lotterman, Twin Cities, 29 Mar. 2026
This works by ionizing atoms belonging to a gaseous propellant, such as xenon or krypton, and then accelerating those ions out through a nozzle to provide thrust.
—Keith Cooper, Space.com, 27 Mar. 2026
Instead of using cryogenic hydrogen, the company is using gaseous hydrogen that's been pressurized to 700 atmospheres.
—David Szondy
march 26, New Atlas, 26 Mar. 2026
The study authors also found that the ratio of gaseous carbon dioxide to ice differs significantly from what is seen in star-forming regions, indicating that the processes controlling ice formation or alteration in planetary nebulae may be very different.
—Rupendra Brahambhatt, Interesting Engineering, 15 Mar. 2026
See All Example Sentences for gaseous
Cite this Entry
“Gaseous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gaseous. Accessed 30 Mar. 2026.
Copy CitationKids Definition
gaseous
adjective
gas·eous
ˈgas-ē-əs 
ˈgash-əs
1
: having the form of or being gas
2
: of or relating to gas
3
: lacking solidity
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