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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Research shows that global warming is making heat waves more frequent, longer-lasting and more intense everywhere. Andrea Thompson, Scientific American, 12 Nov. 2025 Data also shows that global warming is fueling stronger hurricanes, floods and wildfires. Alexandra Banner, CNN Money, 11 Nov. 2025 In that dystopian novel, published in 1993 and set in the mid-2020s, the United States still exists but has been warped by global warming, and its authoritarian government has ceded most of the administration of day-to-day matters to corrupt companies. Vann R. Newkirk Ii, The Atlantic, 10 Nov. 2025 One of the studies, from European climate science group ClimaMeter, found that Melissa’s sustained winds, which hit a near-record of 185 mph, were likely about 10% higher because of global warming. Alex Harris, Miami Herald, 5 Nov. 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 14 Nov. 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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