qui·​nine | \ ˈkwī-ˌnīn How to pronounce quinine (audio) also ˈkwi- How to pronounce quinine (audio) or kwi-ˈnīn or ki-ˈnēn or kwi-ˈnēn \

Definition of quinine

1 : a bitter crystalline alkaloid C20H24N2O2 from cinchona bark used in medicine
2 : a salt of quinine used especially as an antipyretic, antimalarial, and bitter tonic

Examples of quinine in a Sentence

Recent Examples on the Web According to Agilent Technologies, the drink contains between 50 and 60 parts per million of quinine, which is less than the 83 parts per million allowed by the U.S. Food and Drug Administration. Jacob Livesay, USA TODAY, 20 July 2022 In contrast, landing on cards with odd numbers resulted in a bitter-tasting quinine. Tim Newcomb, Popular Mechanics, 5 May 2022 Instead of adding quinine (a medicinal compound from cinchona tree bark used to add bitterness to tonic water) to their Tōyō, Ewing opted to make her own Cascade hops water for a similar bitterness. Jean Trinh, Los Angeles Times, 8 Feb. 2022 Michael Klemba, an associate professor of biochemistry at Virginia Polytechnic Institute and State University, told USA TODAY that quinine is a natural product found in the bark of cinchona trees. Ella Lee, USA TODAY, 31 Jan. 2022 Anyone who has drunk tonic water has tasted quinine. David Reamer, Anchorage Daily News, 21 Nov. 2021 One sip of the Jade Pendant (a mix of Japanese botanical gin, lime, lemongrass, quinine, citrus, and peppercorn) and you’ll already be tempted to order a second round. Joni Sweet, Forbes, 31 Aug. 2021 The book's recipes go well beyond that, celebrating quinine in all its forms, including liqueurs that include cinchona and tonic syrup. Carol Deptolla, Milwaukee Journal Sentinel, 13 Aug. 2021 Suddenly the Axis powers had 95% of the world’s quinine. The Economist, 16 Dec. 2020 See More

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.

First Known Use of quinine

1825, in the meaning defined at sense 1

History and Etymology for quinine

Spanish quina cinchona, from Quechua kina bark

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Time Traveler for quinine

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The first known use of quinine was in 1825

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Dictionary Entries Near quinine



quinine bush

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Statistics for quinine

Last Updated

26 Jul 2022

Cite this Entry

“Quinine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quinine. Accessed 13 Aug. 2022.

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More Definitions for quinine


qui·​nine | \ ˈkwī-ˌnīn How to pronounce quinine (audio) \

Kids Definition of quinine

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


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

Medical Definition of quinine

: 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

More from Merriam-Webster on quinine

Nglish: Translation of quinine for Spanish Speakers

Britannica.com: Encyclopedia article about quinine


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