background radiation Meaning in the Cambridge English Dictionary
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Meaning of “background radiation” in the English Dictionary

"background radiation" in British English

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background radiationnoun [C]

uk   us   specialized
radiationfoundnaturally on ​earth that comes from some ​soil, ​rocks, etc., and from ​outerspace
(Definition of background radiation from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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