RACHYCENTRON

\ɹˈat͡ʃa͡ɪsəntɹˌɒn], \ɹˈat‍ʃa‍ɪsəntɹˌɒn], \ɹ_ˈa_tʃ_aɪ_s_ə_n_t_ɹ_ˌɒ_n]\
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2006 - WordNet 3.0
By Princeton University
 
2011 - English Dictionary Database
By DataStellar Co., Ltd