the ozone layer Meaning in the Cambridge English Dictionary
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Meaning of “the ozone layer” in the English Dictionary

"the ozone layer" in British English

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the ozone layernoun [S]

uk   us  
a ​layer of ​aircontainingozone high above the ​earth that ​preventsharmful ultravioletlight from the ​sun from ​reaching the ​earth
(Definition of the ozone layer from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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