/ Dictionary / Index I institutive: Meaning and Definition of Find definitions for: in•sti•tu•tive Pronunciation: (in'sti-t"tiv, -ty"-), [key] — adj. tending or intended to institute or establish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. institutionary institutor Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language