RADIO WAVE

\ɹˈe͡ɪdɪˌə͡ʊ wˈe͡ɪv], \ɹˈe‍ɪdɪˌə‍ʊ wˈe‍ɪv], \ɹ_ˈeɪ_d_ɪ__ˌəʊ w_ˈeɪ_v]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd