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quinine
7 dictionary results for: quinine
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
qui·nine       [kwahy-nahyn, kwin-ahyn or, especially Brit., kwi-neen] Pronunciation Key
–noun Chemistry, Pharmacology.
1.a 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.a salt of this alkaloid, esp. the sulfate.

[Origin: 1820–30; < Sp quin(a) (< Quechua kina bark) + -ine2]
American Heritage Dictionary - Cite This Source - Share This
qui·nine       (kwī'nīn')  Pronunciation Key 
n.  
  1. A bitter, colorless, amorphous powder or crystalline alkaloid, C20H24N2O2·3H2O, derived from certain cinchona barks and used in medicine to treat malaria.
  2. Any of various compounds or salts of quinine.

Online Etymology Dictionary - Cite This Source - Share This
quinine 
1826, from Sp. quina "cinchona bark" (from which it is extracted), from Quechua (Peru) kina.

WordNet - Cite This Source - Share This
quinine

noun
a bitter alkaloid extracted from chinchona bark; used in malaria therapy 

The American Heritage Science Dictionary - Cite This Source - Share This
quinine       (kwī'nīn')  Pronunciation Key 
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.

American Heritage Stedman's Medical Dictionary - Cite This Source - Share This

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.

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

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.]

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