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

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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 Instead, water could only exist as its gaseous form, water vapor, in the atmosphere. Ashley Strickland, CNN, 13 Oct. 2021 This vaporizes the atoms of its metal form into a gaseous mixture before interlocking as the temperature is lowered, which then forms an open angular structure. Demetrius Simms, Robb Report, 15 Sep. 2021 The planets closer to the star are smaller and rocky, while the ones farther out are large and gaseous. Dean Regas, The Enquirer, 8 Sep. 2021 One cubic foot of liquid oxygen equals 700 cubic feet of gaseous oxygen. Kevin Spear,, 3 Sep. 2021 In fact, in gaseous form at room temperature, atoms are buzzing around at over 1,000 mph. Paul Lipman, Forbes, 3 Sep. 2021 At the cost of a few hundred million dollars, the European Space Agency’s Comet Interceptor mission might be able to sample the gaseous tail of an object like Borisov in the 2030s, if one approaches the Sun at the right time, speed, and direction. Amir Siraj, Scientific American, 2 Sep. 2021 These tiny particles are one of the main components of wildfire smoke, which is a mix of gaseous pollutants, according to the EPA. Yoohyun Jung, San Francisco Chronicle, 5 Aug. 2021 According to the American Lung Association, sulfur dioxide is a gaseous air pollutant composed of sulfur and oxygen. Michael Wetzel The Decatur Daily, al, 14 Aug. 2021

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.

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First Known Use of gaseous

1799, in the meaning defined at sense 1

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Time Traveler for gaseous

Time Traveler

The first known use of gaseous was in 1799

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Dictionary Entries Near gaseous

gas engine


gaseous diffusion

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Statistics for gaseous

Last Updated

20 Oct 2021

Cite this Entry

“Gaseous.” Dictionary, Merriam-Webster, Accessed 22 Oct. 2021.

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More Definitions for gaseous



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

More from Merriam-Webster on gaseous

Nglish: Translation of gaseous for Spanish Speakers

Britannica English: Translation of gaseous for Arabic Speakers


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