/ Dictionary / Index I institutor: Meaning and Definition of Find definitions for: in•sti•tu•tor Pronunciation: (in'sti-t"tur, -ty"-), [key] — n. a person who institutes or founds. a person who institutes a minister into a parish or church. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. institutive instr. Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language