/ Dictionary / Index P prosecutor: Meaning and Definition of Find definitions for: pros•e•cu•tor Pronunciation: (pros'i-ky"tur), [key] — n. Seeprosecuting attorney. a person, as a complainant or chief witness, instigating prosecution in a criminal proceeding. a person who prosecutes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prosecutor (Thesaurus) prosecution prosecutorial Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language