MEGALONYCHIDAE

\mˈɛɡəlˌɒnɪt͡ʃˌɪdiː], \mˈɛɡəlˌɒnɪt‍ʃˌɪdiː], \m_ˈɛ_ɡ_ə_l_ˌɒ_n_ɪ_tʃ_ˌɪ_d_iː]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd