Correct spelling for the English word "piperovatine" is [pˈa͡ɪpɹəvˌatiːn], [pˈaɪpɹəvˌatiːn], [p_ˈaɪ_p_ɹ_ə_v_ˌa_t_iː_n] (IPA phonetic alphabet).
An alkaloidal body, C16H21NO2, allied to piperine, derived from the leaves of piper ovatum, a West Indian plant.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.