(n.) An unorganized amylolytic ferment, on enzyme, present in human mixed saliva and in the saliva of some animals.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). ptyalin. Retrieved September 21, 2026, from http://smartdefine.org/ptyalin/definitions/2050650 |
| Chicago | Webster's. 2011. "ptyalin" http://smartdefine.org/ptyalin/definitions/2050650 (accessed September 21, 2026). |
| Harvard | Webster's 2011, ptyalin, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/ptyalin/definitions/2050650>. |
| MLA | Webster's. "ptyalin" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/ptyalin/definitions/2050650> |