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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And 60% of Americans know that global warming is mostly human-caused. Michael Schneider, Variety, 23 June 2025 According to Royal Museums Greenwich, the city is currently sinking by 1mm (0.04 inches) a year due to natural processes, while sea level rise is accelerating due to global warming. Giulia Carbonaro, MSNBC Newsweek, 23 June 2025 Climate change researchers have even pondered the effect that warmer climates could have on home runs, with a 2023 study in the Bulletin of the American Meteorological Society stating that more than 500 home runs since 2010 could be credited to global warming. Benjamin Royer, Los Angeles Times, 22 June 2025 The Trump Administration makes no secret of its desire to fundamentally overhaul or toss out a vast range of U.S. regulations to promote greater production and use of fossil fuel energy, with little apparent consideration of how that may harm the environment or worsen global warming. Alan Ohnsman, Forbes.com, 16 June 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

Browse Nearby Words

Cite this Entry

“Global warming.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/global%20warming. Accessed 30 Jun. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!