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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Collectively, these measures would reduce the entire region’s dependence on fuel oil, lower greenhouse gas emissions, and provide a more stable energy supply during periods of peak demand. Ariel Cohen, Forbes, 9 Jan. 2025 Circular products need to phase out the use of hazardous chemicals in favor of safer alternatives, reduce water usage and recycle as much water as possible, and achieve zero greenhouse gas emissions, or as close to zero as technology allows. Lewis Perkins, San Diego Union-Tribune, 8 Jan. 2025 Curbing greenhouse gas emissions is the best way to save coral, but humanity may not be able to accomplish that fast enough. Sarah Kuta, Smithsonian Magazine, 7 Jan. 2025 Annual greenhouse gas emissions reached an all-time high last year and have led to an overall uptick in global temperatures. Mack Degeurin, Popular Science, 7 Jan. 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

Dictionary Entries Near greenhouse gas

Cite this Entry

“Greenhouse gas.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/greenhouse%20gas. Accessed 18 Jan. 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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