cinchonidine [sing-kon-i-deen, -din, sin-] EXAMPLES|WORD ORIGIN noun Pharmacology. a white, crystalline, slightly water-soluble, levorotatory alkaloid, C19H22N2O, stereoisomeric with cinchonine and similarly derived, used chiefly as a quinine substitute.
Origin of cinchonidine First recorded in 1850–55;+ + Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 Examples from the Web for cinchonidine Historical Examples of cinchonidine
Red bark contains not only quinine and cinchonine, but also cinchonidine.
Cinchonidine, when heated with potassium hydrate, yields quinoline also, and with nitric acid the same products as cinchonine.
Dr de Vrij states that the substance known under this name is a mixture of hydrochlorate of cinchonidine and of cinchonine.
Tartrate of potash and soda indicate, under these circumstances, only the presence of cinchonidine.
If it is chemically pure, cinchonidine belongs to the non-fluorescent alkaloids.
British Dictionary definitions for cinchonidine cinchonidine noun an alkaloid that is a stereoisomer of cinchonine, with similar properties and uses 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