global warming

noun

: an increase in the earth's atmospheric and oceanic temperatures widely predicted to occur due to an increase in the greenhouse effect resulting especially from pollution
A Russian-owned tanker … completed a journey in record time from Europe to Asia this month, auguring the future of shipping as global warming melts sea ice.—Russell Goldman
Debates about stem cells, global warming, and alternative energy might be less contentious if the scientific issues behind them were better understood.—Elizabeth Gettelman
The development is also meant to boost tourism in Zermatt, which, like many Alpine towns worried about the effects of global warming on winter tourism, is exploring ways to draw visitors throughout the year.—Jim Rendon
… I think it makes a compelling case, at least for most audiences, that humans are the cause of most of the global warming that is taking place, and that unless we take quick action the consequences for our planetary home could become irreversible.—Al Gore

Examples of global warming in a Sentence

Recent Examples on the Web
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Not too long ago, Amazon founder Jeff Bezos was pledging to use his company’s size and scale to galvanize corporate America to confront global warming. — Evan Halper, Washington Post, 2 Nov. 2026 The special report has been cited in thousands of academic papers, in legislative testimony and in media coverage validating carbon capture and storage as a realistic solution to global warming. — Katie Worth, ProPublica, 30 Oct. 2026 About six degrees of that rise can be attributed to global warming. — Gaby Del Valle, The Verge, 29 Oct. 2026 Three recent studies outline how global warming is a major risk to historic French heritage buildings. — Devorah Lauter, ARTnews.com, 29 Oct. 2026 See All Example Sentences for global warming

Word History

First Known Use

1953, in the meaning defined above

Time Traveler
The first known use of global warming was in 1953

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Cite this Entry

“Global warming.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/global%20warming. Accessed 3 Nov. 2026.

Kids Definition

global warming

noun
: a warming of the earth's atmosphere and oceans that is widely predicted to result from an increase in the greenhouse effect caused by air pollution

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