greenhouse gas

noun

: any of various gaseous compounds (such as carbon dioxide or methane) that absorb infrared radiation, trap heat in the atmosphere, and contribute to the greenhouse effect
Water vapor is an important gas for the study of climate and weather because of its role as a natural greenhouse gas as well as its relationship to clouds and precipitation.Mohi Kumar
Scientists now recognize tropospheric ozone—a component of smog—as a greenhouse gas as well as an eye and lung irritant.Science News
While it may not be possible to eliminate all greenhouse gas emissions, it is possible to offset some of the emissions that do still occur. Offsetting involves supporting projects that reduce or sequester greenhouse gas emissions in another location.Tyson Miller
Livestock emit 14.5 percent of all greenhouse gas emissions each year. Most of that is from cows.Marley Walker

Examples of greenhouse gas in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Sustainability is also at risk as the AI boom drives up greenhouse gas emissions, knocking many tech companies off target for their net-zero climate goals. Jeff Young, MSNBC Newsweek, 19 July 2025 Accordingly, even if greenhouse gas emissions were cut to zero tomorrow, the planet would still warm for decades. Jeremy Sabol, The Orlando Sentinel, 17 July 2025 The program sets a declining limit on the total amount of greenhouse gas emissions large emitters can release. Eleanor Pringle, Fortune, 17 July 2025 The Trump bill is expected to increase planet-warming greenhouse gas emissions, according to an analysis by Princeton’s REPEAT project, which found the U.S. would emit roughly 470 million additional metric tons per year in 2035. Nara Schoenberg, Chicago Tribune, 15 July 2025 See All Example Sentences for greenhouse gas

Word History

First Known Use

1975, in the meaning defined above

Time Traveler
The first known use of greenhouse gas was in 1975

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Cite this Entry

“Greenhouse gas.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/greenhouse%20gas. Accessed 23 Jul. 2025.

Kids Definition

greenhouse gas

noun
: any of various gases (as carbon dioxide or methane) that absorb infrared radiation, trap heat in the atmosphere, and contribute to the greenhouse effect
Last Updated: - Updated example sentences
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