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
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The organization said this could be particularly beneficial to the fashion and textile industries, as Scope 3 emissions account for the vast majority of greenhouse gases released through their production processes. Jennifer Bringle, Sourcing Journal, 10 Dec. 2025 Tourism accounts for about 8% of global greenhouse gas emissions, according to a 2018 study in Nature Climate Change. Taylor Haught, Kansas City Star, 10 Dec. 2025 Colorado’s landfills release millions of metric tons of greenhouse gases each year, and the state wants to reduce those emissions as part of its multipronged approach to eliminate 90% of the state’s greenhouse gas emissions by 2050. Noelle Phillips, Denver Post, 7 Dec. 2025 California’s cap-and-trade program places a price on greenhouse gas emissions that the oil and gas industry incur, and these costs are passed onto the consumers at the gas pump. Austin Gae, Oc Register, 3 Dec. 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 17 Dec. 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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