Definition of quinidine
: an alkaloid C20H24N2O2 that is stereoisomeric with quinine and is used in the form of its sulfate or gluconate to treat cardiac rhythm irregularities
Recent Examples of quinidine from the Web
In the early 2000s, Smith combined dextromethorphan — the main ingredient in cough syrups such as Robitussin — with quinidine, a drug used to treat irregular heart rhythms.
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Origin and Etymology of quinidine
International Scientific Vocabulary, from quinine
First Known Use: 1836See Words from the same year
Medical Definition of quinidine
Learn More about quinidine
Britannica.com: Encyclopedia article about quinidine
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