[sing-kuh-neen, -nin, sin-]

noun Pharmacology.

a colorless, crystalline, slightly water-soluble alkaloid, C19H22N2O, a stereoisomer of cinchonidine, obtained from the bark of various species of cinchona and used chiefly as a quinine substitute.

Origin of cinchonine

First recorded in 1815–25; cinchon(a) + -ine2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cinchonine

Historical Examples of cinchonine

British Dictionary definitions for cinchonine



an insoluble crystalline alkaloid isolated from cinchona bark, used to treat malaria. Formula: C 19 H 22 N 2 O
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

cinchonine in Medicine


[sĭngkə-nēn′, sĭnchə-]


An alkaloid derived from the bark of various cinchona trees and used as an antimalarial agent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.