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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Using 100% recycled CAM for NMC 811 pouch cells in the UK could cut greenhouse gas emissions by 32% compared to cells made with virgin materials in Asia. Aamir Khollam, Interesting Engineering, 4 Sep. 2025 The manufacturing sector, which turns raw materials into goods, is East Asia’s largest energy user and source of greenhouse gas emissions. Forbes.com, 2 Sep. 2025 Following the validation of its net-zero and near-term targets by the Science Based Targets initiative (SBTi), the Sri Lankan conglomerate announced its commitment to reducing the total global greenhouse gas (GHG) emissions to net-zero by 2048. Alexandra Harrell, Sourcing Journal, 2 Sep. 2025 One new study by a University of California at Berkeley researcher found that indoor cannabis cultivation is a major emitter of greenhouse gases, with one warehouse producing 100 more times emissions than a similarly sized Walmart. Robert McCoppin, Chicago Tribune, 2 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 10 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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