cinchonidine

American

[sing-kon-i-deen, -din, sin-] / sɪŋˈkɒn ɪˌdin, -dɪn, sɪn- /

noun

Pharmacology.

a white, crystalline, slightly water-soluble, levorotatory alkaloid, C 19 H 22 N 2 O, stereoisomeric with cinchonine and similarly derived, used chiefly as a quinine substitute.

cinchonidine British

/ sɪŋˈkɒnɪˌdiːn /

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

Etymology

Origin of cinchonidine

First recorded in 1850–55; cinchon(a) + -id ³ + -ine ²

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A fourth alkaloid, cinchonidine, is isomeric with cinchonine, which yields it when boiled with amyl alcoholic potash, but is laevo-rotatory, slightly soluble in ether, and faintly fluorescent.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" by Various

Quinidine is almost as powerful an antidote to malaria as quinine; cinchonidine has about two-thirds the power of quinine, and cinchonine less than one-half.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023