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
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
This provides scientists with valuable data on how their formation compares to that of a star or brown dwarf, the term given to large gaseous planets that fail to develop into stars.
—Javier Carbajal, WIRED, 25 Mar. 2025
The contaminant was identified as less than 500 pounds of sulfur dioxide, a gaseous air pollutant associated with respiratory issues and irritation to the eyes, nose and throat.
—Chase Hunter, The Mercury News, 7 Feb. 2025
Paints, sealants, insulations, metals, and more can release many kinds of volatile organic compounds, gaseous pollutants and particulate matter.
—Allison Parshall, Scientific American, 13 Jan. 2025
But their accelerating power is limited by the density of the plasma, which is typically a gaseous substance with fewer than 10^18 particles per cubic centimeter.
—The Physics Arxiv Blog, Discover Magazine, 14 Feb. 2025
See All Example Sentences for gaseous
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Javier Carbajal, WIRED, 25 Mar. 2025
The contaminant was identified as less than 500 pounds of sulfur dioxide, a gaseous air pollutant associated with respiratory issues and irritation to the eyes, nose and throat.
—Chase Hunter, The Mercury News, 7 Feb. 2025
Paints, sealants, insulations, metals, and more can release many kinds of volatile organic compounds, gaseous pollutants and particulate matter.
—Allison Parshall, Scientific American, 13 Jan. 2025
But their accelerating power is limited by the density of the plasma, which is typically a gaseous substance with fewer than 10^18 particles per cubic centimeter.
—The Physics Arxiv Blog, Discover Magazine, 14 Feb. 2025
See All Example Sentences for gaseous
Cite this Entry
“Gaseous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gaseous. Accessed 1 Apr. 2025.
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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