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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For the first time, scientists have quantified the causal links between worsening heat waves and global warming pollution from individual fossil fuel and cement companies, pushing the boundaries of extreme weather event research in multiple surprising ways. Andrew Freedman, CNN Money, 10 Sep. 2025 In this case, the oil and gas industry, which is responsible for about 50% of worldwide GHG emissions, would be less culpable in the matter of global warming. Ian Dexter Palmer, Forbes.com, 10 Sep. 2025 If global warming continues on its current trajectory, the amount of forest area burned each year could double or even triple by midcentury. Tony Cheng, The Conversation, 8 Sep. 2025 China’s focus on global warming and green energy, many observers argue, isn’t borne out of a genuine passion for ecology. Robert Schmad, The Washington Examiner, 7 Sep. 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 13 Sep. 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

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