PERIOCTAHEDRAL

\pˈi͡əɹɪˌɒktɐhˈiːdɹə͡l], \pˈi‍əɹɪˌɒktɐhˈiːdɹə‍l], \p_ˈiə_ɹ_ɪ__ˌɒ_k_t_ɐ_h_ˈiː_d_ɹ_əl]\
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1914 - Nuttall's Standard dictionary of the English language
By Nuttall, P.Austin.