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
Some components had been strengthened, such as elevator doors, while others were designed to flex under pressure, including gaseous distribution panels.
From Science Daily ● May 4, 2026
The uranium itself is in gaseous form and is believed to be stored in large metal containers.
From BBC ● Mar. 31, 2026
Researchers at the University of Maryland have developed smart underwear to track, well, gaseous emissions.
From MarketWatch ● Feb. 20, 2026
And some worlds will look out onto a vast gaseous nebula, the remains of an ordinary star that once was and is no longer.
From "Cosmos" by Carl Sagan
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.
