Correct spelling for the English word "bipubiotomy" is [ba͡ɪpjˌuːbɪˈɒtəmɪ], [baɪpjˌuːbɪˈɒtəmɪ], [b_aɪ_p_j_ˌuː_b_ɪ__ˈɒ_t_ə_m_ɪ] (IPA phonetic alphabet).
Double pubiotomy, division of the pubis on both sides.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.