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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Under the international climate accord, first negotiated in 2015, countries around the world agreed to cut greenhouse gas emissions in an effort to limit global warming and forestall the worst impacts of climate change. Rachel Waldholz, NPR, 21 Jan. 2025 Transport is the largest source of UK greenhouse gas emissions, accounting for 26% of total emissions. Nicole Kobie, Forbes, 21 Jan. 2025 Paris Agreement withdrawal Trump — for the second time — also announced his intention to withdraw from the Paris Climate Accord, the landmark pact among nearly 200 countries to cut planet-warming greenhouse gas emissions. Tony Briscoe, Los Angeles Times, 21 Jan. 2025 Biden's order could help limit greenhouse gas emissions driving global warming. Avery Lotz, Axios, 20 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 27 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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