adjective
Other Word Forms
Derived Forms
Etymology
Origin of gaseous
Explanation
Describe the form of a substance that's not solid or liquid as gaseous. Gaseous matter will expand to fit an entire container, and it has no volume and no shape. Use the adjective gaseous to describe anything having to do with a gas, or that shares some characteristics with gases. While you can't usually see gaseous particles, you can often smell them. You might comment on the stinky gaseous exhaust from a passing bus, or refer to the gaseous nature of the space between the stars in the universe.
Vocabulary lists containing gaseous
The Water Cycle - Introductory
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Earth Science - Middle School
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The Water Cycle - Middle School and High School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The uranium itself is in gaseous form and is believed to be stored in large metal containers.
From BBC • Mar. 31, 2026
The volume of natural gas in a liquid form is about 600 times smaller than its volume in a gaseous state in natural-gas pipelines, according to the U.S.
From MarketWatch • Mar. 2, 2026
In addition to gaseous compounds, the team found large quantities of solid materials, including carbon-rich grains and water ices.
From Science Daily • Feb. 12, 2026
Its sound is like a gaseous rumbling from deep within the earth—or our bellies.
From The Wall Street Journal • Oct. 22, 2025
The landscape melts around me like wet paint, to reveal a gaseous garden dotted with lime-green flowers.
From "Kwame Crashes the Underworld" by Craig Kofi Farmer
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
