/ Dictionary / Index P prolocutor: Meaning and Definition of Find definitions for: pro•loc•u•tor Pronunciation: (prō-lok'yu-tur), [key] — n. a presiding officer of an assembly; chairperson. the chairperson of the lower house of a convocation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prolix prologue Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language