PACHYCEPHALA

\pˌat͡ʃa͡ɪsfˈɑːlə], \pˌat‍ʃa‍ɪsfˈɑːlə], \p_ˌa_tʃ_aɪ_s_f_ˈɑː_l_ə]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd