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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The authors found that just 12.8% of the films allude to global warming. Sammy Roth, Los Angeles Times, 20 Feb. 2025 Critics of the Trump policy point out that the burning of fossil fuels is the main driver of global warming and that scientists say the world needs to move away from fossil fuels as quickly as possible in order to avoid the worst consequences of climate change. Karen Zraick, New York Times, 19 Feb. 2025 The rising temperatures associated with global warming have also contributed to the rising number of deaths in the alpine environment. Lynn Hill, Outside Online, 17 Feb. 2025 Disruptions to the Food Supply Chain The massive ongoing challenges of global warming (and associated extreme weather events) and the need to feed a growing world population that is expected to reach 9.1 billion by 2050 have all impacted food security and have caused major global food shortages. Chris Gallagher, USA TODAY, 15 Feb. 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 3 Mar. 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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