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.

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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. 2020

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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

Medical definitions for quinidine

quinidine
[ kwĭnĭ-dēn′ ]

n.

A colorless crystalline alkaloid that is a stereoisomer of quinine and is used as a treatment for malaria and cardiac arrhythmias.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.