/ Dictionary / Index P preinform: Meaning and Definition of Find definitions for: pre•in•form Pronunciation: (prē"in-fôrm'), [key] — v.t. to supply with information beforehand: He preinformed the newspapers of his decision. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. preindicate preinvasive 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