the greenhouse effect Definition in British English Dictionary
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Definition of "the greenhouse effect" - British English Dictionary

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the greenhouse effectnoun [S]

uk   us  
an increase in the amount of carbon dioxide and other gases in the atmosphere (= mixture of gases around the Earth), that is believed to be the cause of a gradual warming of the surface of the Earth
(Definition of the greenhouse effect from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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