/ Dictionary / Index P pepsinogen: Meaning and Definition of Find definitions for: pep•sin•o•gen Pronunciation: (pep-sin'u-jun, -jen"), [key] — n. Biochem. crystals, occurring in the gastric glands, that during digestion are converted into pepsin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pepsinogen (Thesaurus) pepsinate pep talk Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language