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quinine

[kwahy-nahyn, kwin-ahyn or, esp. British, kwi-neen] /ˈkwaɪ naɪn, ˈkwɪn aɪn or, esp. British, kwɪˈnin/
noun, Chemistry, Pharmacology
1.
a white, bitter, slightly water-soluble alkaloid, C 2 0 H 2 4 N 2 O 2 , having needlelike crystals, obtained from cinchona bark: used in medicine chiefly in the treatment of resistant forms of malaria.
2.
a salt of this alkaloid, especially the sulfate.
Origin
1820-1830
1820-30; < Spanish quin(a) (< Quechua kina bark) + -ine2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for quinines

quinine

/kwɪˈniːn; US ˈkwaɪnaɪn/
noun
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
Word Origin
C19: from Spanish quina cinchona bark, from Quechua kina bark
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for quinines

quinine

n.

alkaloid responsible for curative properties in the cinchona tree, 1821, from French quinine (1820), with chemical ending -ine (2) + Spanish quina "cinchona bark" (from which it is extracted), from Quechua (Peru) kina. Earlier in reduplicated form quinaquina (1727).

Online Etymology Dictionary, © 2010 Douglas Harper
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quinines in Medicine

quinine qui·nine (kwī'nīn')
n.

  1. A bitter colorless amorphous powder or crystalline alkaloid derived from certain cinchona barks and used to treat malaria.

  2. Any of various compounds or salts of quinine.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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quinines in Science
quinine
  (kwī'nīn')   
A bitter-tasting, colorless drug derived from the bark of certain cinchona trees and used medicinally to treat malaria. For hundreds of years quinine was the only drug known to effectively combat malarial infection. It has since been largely replaced by synthetic compounds that not only relieve the symptoms of malaria but also rid the body of the malarial parasite, which quinine does not do. See Note at aspirin.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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17
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