quinidine

[ kwin-i-deen, -din ]

/ ˈkwɪn ɪˌdin, -dɪn /

noun Pharmacology.

a colorless, crystalline alkaloid, C20H24N2O2, isomeric with quinine, obtained from the bark of certain species of cinchona trees or shrubs, used chiefly to regulate heart rhythm and to treat malaria.

Nearby words

quine, quinella, quinestrol, quinhydrone, quinic acid, quinidine, quiniela, quinine, quinine water, quinn, quinnat salmon

Origin of quinidine

First recorded in 1830–40; quin(ine) + -id³ + -ine²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for quinidine

It is nothing more than quinidine, or cinchonidine, or a mixture of both.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley
Quinidine yields with chromic acid the same decomposition products as quinine.
Scientific American Supplement, No. 415, December 15, 1883|Various
From the above statement respecting the solubility of quinidine in ether, it appears that the 10 gr.
Cooley's Practical Receipts, Volume II|Arnold Cooley
If this be quinidine, it will be dissolved on the addition of proportionately more ether, while cinchonine will remain unaffected.
Cooley's Practical Receipts, Volume II|Arnold Cooley

This reaction is not characteristic of quinine, for with quinidine one gets the same reaction.
Cooley's Practical Receipts, Volume II|Arnold Cooley

British Dictionary definitions for quinidine

quinidine

/ (ˈkwɪnɪˌdiːn) /

noun

a crystalline alkaloid drug that is an optically active diastereoisomer of quinine: used to treat heart arrhythmias. Formula: C 20 H 24 N 2 O 2

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

Medicine definitions for quinidine

quinidine

[ kwĭn′ĭ-dēn′ ]

n.

A colorless crystalline alkaloid that is a stereoisomer of quinine and is used as a treatment for malaria and cardiac arrhythmias.