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, built to traverse the frozen waters of the Arctic, 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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Some research has pointed to global warming as a potential cause of this trend, but this is not yet fully established, said meteorologist Kieran Bhatia of the global risk and reinsurance company Guy Carpenter. Andrew Freedman, CNN Money, 23 Oct. 2025 The show deftly veers between comedy and tragedy, using a local news staple’s breakdown to issue dire warnings about consumerism and global warming. Brent Lang, Variety, 22 Oct. 2025 His administration has cut funding for clean energy projects and is trying to remove the Environmental Protection Agency’s ability to regulate the greenhouse gas pollution that is causing global warming. Evan Bush, NBC news, 22 Oct. 2025 The primary threat to Arctic seals is sea ice loss driven by global warming, according to a statement from the IUCN. Doyle Rice, USA Today, 18 Oct. 2025 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 25 Oct. 2025.

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

More from Merriam-Webster on global warming

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