Wiktionary:Word of the day/2021/April 25

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quinine n

(pharmacology) An alkaloid with the chemical formula C₂₀H₂₄N₂O₂ derived from cinchona bark (from plants of the genus Cinchona) used to treat malaria and as an ingredient of tonic water, which presents as a bitter colourless powder; also, a drug containing quinine or a chemical compound derived from it. quinine v (transitive, archaic) To treat (someone) with quinine. Today is World Malaria Day, which is recognized by the United Nations to emphasize global efforts to control malaria.

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