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
Recent Examples of quinine from the Web
The aperitif wine Cocchi Rosa adds a lightly sweet, fruity note and the bitterness of quinine.
This one is adapted from Modernist Cuisine, and the quinine in the tonic causes the sweets to glow under a black light.
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
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
Definition of quinine for Students
: a bitter drug obtained from cinchona bark and used to treat malaria
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
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