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单词 quinine
释义

WordReference Random House Learner's Dictionary of American English © 2024
qui•nine /ˈkwaɪnaɪn, ˈkwɪnaɪn/USA pronunciation   n. [uncountable]
  1. Drugsa white crystal-like substance from the bark of certain trees, used for treating malaria.

WordReference Random House Unabridged Dictionary of American English © 2024
qui•nine  (kwī′nīn, kwin′īn or, esp. Brit., kwi nēn′),USA pronunciation n. [Chem., Pharm.]
  1. Chemistry, Drugsa white, bitter, slightly water-soluble alkaloid, C20H24N2O2, having needlelike crystals, obtained from cinchona bark: used in medicine chiefly in the treatment of resistant forms of malaria.
  2. Chemistrya salt of this alkaloid, esp. the sulfate.
  • Quechua kina bark) + -ine2
  • Spanish quin(a) (
  • 1820–30

Collins Concise English Dictionary © HarperCollins Publishers::
quinine /kwɪˈniːn; US: ˈkwaɪnaɪn/ n
  1. a bitter crystalline alkaloid extracted from cinchona bark, the salts of which are used as a tonic, antipyretic, analgesic, etc, and in malaria therapy. Formula: C20H24N2O2
Etymology: 19th Century: from Spanish quina cinchona bark, from Quechua kina bark
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