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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As more and more of our forested land is being cleared, less carbon dioxide can be stored in trees and more is available to increase the atmospheric carbon dioxide levels which, in turn, can contribute to global warming. Dawn Pettinelli, Hartford Courant, 26 Apr. 2025 Colorado could now become the first state in the nation to require retailers to warn consumers that burning fossil fuels contributes to global warming. Thomas G. Moukawsher, MSNBC Newsweek, 23 Apr. 2025 Researchers have noted an extreme rise in the melting sea ice in Arctic regions leading to the destruction of livable landmasses in Greenland and West Antarctica, which has posed threats for humans and animals, as an example of global warming, according to the World Wildlife Fund. Ashleigh Fields, The Hill, 22 Apr. 2025 However, there is little expectation that those concerns would be heeded by Trump administration officials, who either deny or downplay the threat of global warming. Lisa Friedman, New York Times, 14 Apr. 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 29 Apr. 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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