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English definition of “radioactivity”

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radioactivity

noun [U] uk   /ˌreɪ.di.əʊ.ækˈtɪv.ɪ.ti/ us    /-oʊ.ækˈtɪv.ə.t̬i/
the quality that some atoms have of producing energy, which can be very harmful to health the energy produced by atoms in this way: A dangerous amount of radioactivity was released into the environment last month.
Translations of “radioactivity”
in Korean 방사능…
in Arabic نَشاط إشعاعي…
in Portuguese radioatividade…
in Catalan radioactivitat…
in Japanese 放射能…
in Italian radioattività…
in Chinese (Traditional) 放射(性), 放射線, 輻射線…
in Russian радиоактивность…
in Turkish radyoaktivite…
in Chinese (Simplified) 放射(性), 放射线, 辐射线…
in Polish promieniotwórczość, radioaktywność…
(Definition of radioactivity from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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