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
Mohi KumarScientists now recognize tropospheric ozone—a component of smog—as a greenhouse gas as well as an eye and lung irritant.—Science News
Science NewsWhile 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
Tyson MillerLivestock emit 14.5 percent of all greenhouse gas emissions each year. Most of that is from cows.—Marley Walker
Marley WalkerExamples of greenhouse gas in a Sentence
Recent Examples on the Web
The World Meteorological Organization said in its latest bulletin on greenhouse gases, an annual study released ahead of the UN’s annual climate conference, that CO2 growth rates have now tripled since the 1960s, and reached levels not seen in at least 800,000 years.
—Jason Del Rey, Fortune, 15 Oct. 2025
Natural gas is a climate problem Natural gas is mostly methane, a very powerful greenhouse gas.
—NPR, 13 Oct. 2025
However, the concept of an energy source that can run 24/7 and emit no heat-trapping greenhouse gases when generating power is compelling.
—Judith Kohler, Denver Post, 13 Oct. 2025
Natural variability is an important baseline scientists use to distinguish between normal climate fluctuations and new extremes driven by greenhouse gas emissions and global warming.
—Hayleigh Evans, AZCentral.com, 13 Oct. 2025
See All Example Sentences for greenhouse gas
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Jason Del Rey, Fortune, 15 Oct. 2025
Natural gas is a climate problem Natural gas is mostly methane, a very powerful greenhouse gas.
—NPR, 13 Oct. 2025
However, the concept of an energy source that can run 24/7 and emit no heat-trapping greenhouse gases when generating power is compelling.
—Judith Kohler, Denver Post, 13 Oct. 2025
Natural variability is an important baseline scientists use to distinguish between normal climate fluctuations and new extremes driven by greenhouse gas emissions and global warming.
—Hayleigh Evans, AZCentral.com, 13 Oct. 2025
See All Example Sentences for greenhouse gas
Cite this Entry
“Greenhouse gas.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/greenhouse%20gas. Accessed 17 Oct. 2025.
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