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
The images show ultra-fine bright and dark stripes (called striations) in the thin, gaseous layer of the sun's atmosphere known as the photosphere, according to a statement from the National Solar Observatory (NSO), which operates the solar telescope.
—Samantha Mathewson, Space.com, 6 June 2025
This clean-sheet architecture optimizes the use of gaseous hydrogen, addressing the challenges of incorporating this fuel into existing aircraft designs.
—Kurt Knutsson, Cyberguy Report, FOXNews.com, 7 Apr. 2025
The gaseous system operates at 10,000 psi, storing up to 4.5 kg of hydrogen, while the upcoming liquid system will support up to 20 kg, greatly extending range and endurance.
—David Blekhman, Forbes.com, 6 May 2025
The planet is thought to be gaseous, similar to Uranus and Neptune.
—Julia Jacobo, ABC News, 2 May 2025
See All Example Sentences for gaseous
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Samantha Mathewson, Space.com, 6 June 2025
This clean-sheet architecture optimizes the use of gaseous hydrogen, addressing the challenges of incorporating this fuel into existing aircraft designs.
—Kurt Knutsson, Cyberguy Report, FOXNews.com, 7 Apr. 2025
The gaseous system operates at 10,000 psi, storing up to 4.5 kg of hydrogen, while the upcoming liquid system will support up to 20 kg, greatly extending range and endurance.
—David Blekhman, Forbes.com, 6 May 2025
The planet is thought to be gaseous, similar to Uranus and Neptune.
—Julia Jacobo, ABC News, 2 May 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 10 Jun. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share