/ Dictionary / Index P preestablish: Meaning and Definition of Find definitions for: pre•es•tab•lish Pronunciation: (prē"i-stab'lish), [key] — v.t. to establish beforehand. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. preequalization preestablished harmony Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language