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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This will be accompanied by a significant increase in greenhouse gas emissions from power generation during that period. Ariel Cohen, Forbes.com, 10 Sep. 2025 The two companies decided to expand their collaboration in response to growing pressure on the shipping industry to decarbonize, driven by its 3 percent share of global greenhouse gas emissions. Georgina Jedikovska, Interesting Engineering, 10 Sep. 2025 Producing fertilizers accounts for some 5% of global greenhouse gas emissions. Bloomberg, Mercury News, 10 Sep. 2025 These measurements are fundamental to understanding how greenhouse gas emissions relate to rising temperatures, simultaneously contributing to scientific research and informing policymakers of compliance with environmental regulations. Stephen Clark, ArsTechnica, 6 Sep. 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 12 Sep. 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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