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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Contributing factors likely include strengthening westerly winds, a phenomenon that's connected to global warming due to climate change, as well as how the ocean is responding to those surface winds, Neff added. Julia Jacobo, ABC News, 16 June 2026 McKay admired how Greenberg, who has devoted his life to drawing attention to the climate crisis, has used every platform at his disposal to magnify the stakes of global warming. Brent Lang, Variety, 15 June 2026 Deforestation is the leading driver of Brazil’s greenhouse gas emissions, which contribute to global warming. Gabriela Sa Pessoa, Fortune, 12 June 2026 As global warming intensifies, economists are expecting food-price shocks to become more common, raising the risk that higher grocery costs become a more enduring source of inflation. Bloomberg, Mercury News, 12 June 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 19 Jun. 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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