adjective
Other Word 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.
Less snowfall caused the decrease, the climate expert said, while high temperatures have transformed any solid snow into its gaseous form.
From Barron's ● Jun. 15, 2026
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
Its setup includes a powerful windowless gaseous tritium source, a high-resolution spectrometer that precisely measures electron energies, and a detector that records the particles.
From Science Daily ● Dec. 27, 2025
The chaplain’s voice floated up to him through the distance tenuously in an unintelligible, almost inaudible monotone, like a gaseous murmur.
From "Catch-22" by Joseph Heller
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Get a wordDefinitions 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.
