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

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Some scientific programs, such those concerned with global warming or the social and economic implications of science, technology and healthcare policies would be slashed by more than 50%. Business Columnist, Los Angeles Times, 7 Apr. 2026 His company Effect Partners acts as sustainability director for the band U2, has launched green initiatives for Bon Iver and created One Sweet Whirled, a Dave Matthews Band ice cream flavor at Ben & Jerry’s that accompanied an early global warming campaign in 2002. Jared Kaufman, Twin Cities, 4 Apr. 2026 Wright equates climate-change activists to alarmists and has likened efforts by Democrats to combat global warming to Soviet-style communism. Anca Gurzu, Encyclopedia Britannica, 3 Apr. 2026 The depletion of fossil fuels and the ripple effects of pollution, global warming, and overpopulation turned the world into an ugly place. Nick Romano, Entertainment Weekly, 2 Apr. 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 12 Apr. 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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