Pronunciation: (pu-pā'in, -pī'in), [key]
1. Biochem.a proteolytic enzyme found in the fruit of the papaya tree, Carica papaya.
2. Pharm.a commercial preparation of this used as a meat tenderizer and in medicine as a digestant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.