RADIOCHEMISTRY

\ɹˌe͡ɪdɪə͡ʊkˈɛmɪstɹi], \ɹˌe‍ɪdɪə‍ʊkˈɛmɪstɹi], \ɹ_ˌeɪ_d_ɪ__əʊ_k_ˈɛ_m_ɪ_s_t_ɹ_i]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd