RADIO-ACTIVE

\ɹˈe͡ɪdɪˌə͡ʊˈaktɪv], \ɹˈe‍ɪdɪˌə‍ʊˈaktɪv], \ɹ_ˈeɪ_d_ɪ__ˌəʊ_ˈa_k_t_ɪ_v]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe