Pronunciation: (pep'tu-nīz"), [key]
—v.t., -nized, -niz•ing.
1. to subject (food) to an artificial, partial digestion by pepsin or pancreatic extract in order to aid digestion.
2. to hydrolyze or dissolve by a proteolytic enzyme, as pepsin. Also, esp. Brit.,pep'to•nise".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.