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English definition of “global warming”

global warming

noun [U]     ENVIRONMENT
a gradual increase in world temperatures caused by gases in the air which prevent heat escaping into space and are a big threat to the future of the earth: Reversing the effects of global warming may be the greatest challenge of our time. Fossil fuels, such as coal and gas, produce greenhouse gases and contribute to global warming. to combat/fight/tackle global warming → See also climate change
(Definition of global warming noun from the Cambridge Business English Dictionary © Cambridge University Press)
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