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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The extreme heat has been supercharged by global warming, driven by humans burning fossil fuels, which raises the background temperature, making every heat wave more intense. Taylor Ward, CNN Money, 24 June 2026 But in a world where global warming fixes can seem impossibly daunting, limiting methane pollution from stripper wells is the rare low-hanging fruit, Andrew Logan of Ceres, a climate advocacy group, told me. Alex Cuadros, ProPublica, 23 June 2026 The most egregious claims portray fossil fuels and global warming as beneficial, while denying the fact that burning fossil fuels raises global temperatures, which increase flooding, drought, sea-level rise and other consequences of climate change. Joe Árvai, The Conversation, 22 June 2026 Created in partnership with National Geographic CreativeWorks, the mini documentaries brought the A-list ambassadors to Norway, Japan, Hawaii and Mexico to witness the effects of global warming, overfishing and plastic marine pollution. Danielle Directo-Meston, HollywoodReporter, 20 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 27 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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