(n.) A brownish resinous substance obtained as a by-product in the treatment of cinchona bark. It consists of a mixture of several alkaloids.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Quinoidine. Retrieved October 2, 2026, from http://smartdefine.org/quinoidine/definitions/2051997 |
| Chicago | Webster's. 2011. "Quinoidine" http://smartdefine.org/quinoidine/definitions/2051997 (accessed October 2, 2026). |
| Harvard | Webster's 2011, Quinoidine, Smart Define, viewed 2 October, 2026, <http://smartdefine.org/quinoidine/definitions/2051997>. |
| MLA | Webster's. "Quinoidine" 27 May 2011. Web. 2 October 2026. <http://smartdefine.org/quinoidine/definitions/2051997> |