gas·​eous | \ ˈga-sē-əs How to pronounce gaseous (audio) , ˈga-shəs \

Definition of gaseous

1 : having the form of or being gas also : of or relating to gases
2a : lacking substance or solidity
b : gassy sense 3 trick phrases and gaseous circumlocutions— Edwin Newman

Keep scrolling for more

Other Words from gaseous

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 What had happened is this: about one month before the launch, SpaceX received a requirement from NASA to add more gaseous nitrogen to the rocket’s interstage. Eric Berger, Ars Technica, "Forget Dragon, the Falcon 9 rocket is the secret sauce of SpaceX’s success," 3 June 2020 Whereas trucks, buses, trains and even ships will be using electricity generated by hydrogen-fuel cells and will have no gaseous emissions. WSJ, "California’s 2035 Ban on New Gas-Powered Cars," 29 Sep. 2020 Different mounds might have slightly different gaseous contributors, but the gases all likely serve a similar purpose: pressurizing. Maya Wei-haas, National Geographic, "Colossal crater found in Siberia. What made it?," 23 Sep. 2020 On a physical level, an odor starts with a gaseous molecule that can be carried by air. Popular Science, "What Makes Things Stink?," 18 Sep. 2020 Such concerning numbers prepare the reader for Yergin’s contention that the transition from greenhouse gaseous fuels to alternatives like solar and wind power is not going to be quick or easy. David Holahan, USA TODAY, "'The New Map': Daniel Yergin's sobering and smart take on the global state of energy," 14 Sep. 2020 And as Ick explains when Kent asks him what will happen when the ice melts, the frozen gas shifts directly from a solid to a gaseous state, rather than melting into a liquid. Jennifer Ouellette, Ars Technica, "Real Genius turns 35—celebrating this cult classic is a moral imperative," 9 Aug. 2020 Buoyed by WASP-76b’s rotation, as well as ferocious winds that blow at speeds around 11,000 miles per hour, the gaseous iron then swirls nightward, smacking into a sharp temperature gradient that rapidly condenses it into molten liquid. Katherine J. Wu, Smithsonian Magazine, "On This Scorching-Hot Exoplanet, a Forecast of Molten Iron Rain," 12 Mar. 2020 There are different kinds of chlorine sanitizers available, including cal hypo, dichlor, gaseous chlorine, liquid chlorine, lithium hypochlorite and trichlor. Joseph Truini, Popular Mechanics, "6 Things To Know Before Installing an Inground Pool," 14 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gaseous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of gaseous

1799, in the meaning defined at sense 1

Keep scrolling for more

Learn More about gaseous

Time Traveler for gaseous

Time Traveler

The first known use of gaseous was in 1799

See more words from the same year

Statistics for gaseous

Last Updated

19 Oct 2020

Cite this Entry

“Gaseous.” Dictionary, Merriam-Webster, Accessed 21 Oct. 2020.

Keep scrolling for more

More Definitions for gaseous


How to pronounce gaseous (audio)

English Language Learners Definition of gaseous

: having the form of gas


gas·​eous | \ ˈga-sē-əs How to pronounce gaseous (audio) , ˈga-shəs \

Kids Definition of gaseous

1 : having the form of gas The substance changed from a liquid to a gaseous state.
2 : of or relating to gas gaseous odors


gas·​eous | \ ˈgas-ē-əs How to pronounce gaseous (audio) , ˈgash-əs How to pronounce gaseous (audio) \

Medical Definition of gaseous

: having the form of or being gas also : of or relating to gases

Keep scrolling for more

Comments on gaseous

What made you want to look up gaseous? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!