quinine

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noun qui·nine \ˈkwī-ˌnīn also ˈkwi- or kwi-ˈnīn or ki-ˈnēn or kwi-ˈnēn\

Definition of quinine

  1. 1 :  a bitter crystalline alkaloid C20H24N2O2 from cinchona bark used in medicine

  2. 2 :  a salt of quinine used especially as an antipyretic, antimalarial, and bitter tonic

Recent Examples of quinine from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quinine'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of quinine

Spanish quina cinchona, from Quechua kina bark


First Known Use: 1825


QUININE Defined for English Language Learners

quinine

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noun

Definition of quinine for English Language Learners

  • : a drug that is made from the bark of a tree and used especially to treat malaria


QUININE Defined for Kids

quinine

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noun qui·nine \ˈkwī-ˌnīn\

Definition of quinine for Students

  1. :  a bitter drug obtained from cinchona bark and used to treat malaria


Medical Dictionary

quinine

play play
noun qui·nine \ˈkwī-ˌnīn also ˈkwin-ˌīn, especially British kwin-ˈēn, ˈkwin-ēn\

Medical Definition of quinine

  1. :  a bitter crystalline alkaloid C20H24N2O2 obtained from cinchona bark that is used as a flavoring agent, has antipyretic and analgesic properties, and is administered orally in the form of its salts (as the hydrated sulfate (C20H24N2O2)2·H2SO4·2H2O) as an antimalarial



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