ACOUSTIC DEVICE

\ɐkˈuːstɪk dɪvˈa͡ɪs], \ɐkˈuːstɪk dɪvˈa‍ɪs], \ɐ_k_ˈuː_s_t_ɪ_k d_ɪ_v_ˈaɪ_s]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd