quinidine

American  

[kwin-i-deen, -din] / ˈkwɪn ɪˌdin, -dɪn /

noun

Pharmacology.

1. a colorless, crystalline alkaloid, C 2 0 H 2 4 N 2 O 2 , 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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quinidine British  

/ ˈkwɪnɪˌdiːn /

noun

1. 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

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Etymology

Origin of quinidine

First recorded in 1830–40; quin(ine) + -id ³ + -ine ²

Compare meaning

How does quinidine compare to similar and commonly confused words? Explore the most common comparisons:

• quinidine vs. quinine

Example Sentences

These include methylcobalamin, glutathione, atropine sulfate, and a combination of dextromethorphan and quinidine marketed as Nuedexta.

From Nature • Oct. 17, 2017

Such, in one way or another, is the story of digitalis, of quinidine, of many sera, of insulin, dinitrophenol, and perhaps the barbiturates.

From Time Magazine Archive

Yellow bark, which is not official, yields 3% of quinine, and pale bark about 10% of total alkaloids, of which hardly any is quinine, cinchonine and quinidine being its chief constituents.

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

Their great value depends upon the presence of certain alkaloid substances called quinine, cinchonine, and quinidine, which exist in the bark in combination with tannic and other acids.

From Catalogue of Economic Plants in the Collection of the U. S. Department of Agriculture by Saunders, William

The true cinchona barks, containing quinine, quinidine, and cinchonine, are distinguished from the false by their splintery-fibrous texture, the latter being pre-eminently corky.

From The Andes and the Amazon Across the Continent of South America by Orton, James