(n.) A proteolytic ferment, like trypsin, present in the juice of the green fruit of the papaw (Carica Papaya) of tropical America.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). papain. Retrieved September 24, 2026, from http://smartdefine.org/papain/definitions/2041793 |
| Chicago | Webster's. 2011. "papain" http://smartdefine.org/papain/definitions/2041793 (accessed September 24, 2026). |
| Harvard | Webster's 2011, papain, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/papain/definitions/2041793>. |
| MLA | Webster's. "papain" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/papain/definitions/2041793> |