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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Since the food system accounts for 10-30 percent of US greenhouse gas emissions and 34 percent of global emissions, this could reduce total U.S. emissions by 5-14 percent and global emissions by 16 percent. Josh Hammer, Newsweek, 14 Feb. 2025 As greenhouse gas emissions keep warming our climate, hurricanes and rainfalls are getting more intense. Miami Herald, 14 Feb. 2025 But achieving true net zero—a state where greenhouse gas emissions are fully offset—requires more than just ambition. Tyler Shepherd, USA TODAY, 13 Feb. 2025 The report also notes the company's commitment to sustainability and technology, with investments in digital platforms and initiatives to reduce greenhouse gas emissions. Quartz Intelligence Newsroom, Quartz, 13 Feb. 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 19 Feb. 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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!