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quinine 音标拼音: [kw'ɑɪn,ɑɪn] n. 奎宁 奎宁 quinine n 1: a bitter alkaloid extracted from chinchona bark; used in malaria therapy Quinine \Qui"nine\, n. [F. (cf. Sp. quinina), fr. Sp. quina, or quinaquina, Peruvian bark, fr. Peruv. kina, quina, bark. Cf. {Kinic}.] (Chem.) An alkaloid extracted from the bark of several species of cinchona (esp. {Cinchona Calisaya}) as a bitter white crystalline substance, {C20H24N2O2}. Hence, by extension (Med.), any of the salts of this alkaloid, as the acetate, chloride, sulphate, etc., employed as a febrifuge or antiperiodic. Called also {quinia}, {quinina}, etc. [Written also {chinine}.] [1913 Webster]
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