Pronunciation · Spelling · Definition
How to say: radioactivity
Spelling:
Radioactivity
Syllables
radioactivity
US accent
/ɹˌeɪdɪoʊæktˈɪvᵻɾi/
UK accent
/ɹˌeɪdɪəʊaktˈɪvɪti/
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Definition
Definition — the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay