/ Dictionary / Index P peptize: Meaning and Definition of Find definitions for: pep•tize Pronunciation: (pep'tīz), [key] — -tized, -tiz•ing. to disperse (a substance) into colloidal form, usually in a liquid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: peptize (Thesaurus) peptidolytic peptolytic Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language