/ Dictionary / Index P peptonize: Meaning and Definition of Find definitions for: pep•to•nize Pronunciation: (pep'tu-nīz"), [key] — -nized, -niz•ing. to subject (food) to an artificial, partial digestion by pepsin or pancreatic extract in order to aid digestion. to hydrolyze or dissolve by a proteolytic enzyme, as pepsin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. peptone Pepys Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language