RADIOTELEPHONY

\ɹˌe͡ɪdɪə͡ʊtəlˈɛfənˌi], \ɹˌe‍ɪdɪə‍ʊtəlˈɛfənˌi], \ɹ_ˌeɪ_d_ɪ__əʊ_t_ə_l_ˈɛ_f_ə_n_ˌi]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd
 
1919 - The Winston Simplified Dictionary
By William Dodge Lewis, Edgar Arthur Singer