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[kwi-noi-deen, -din] /kwɪˈnɔɪ din, -dɪn/
noun, Pharmacology.
a brownish-black, resinous substance consisting of a mixture of alkaloids, obtained as a by-product in the manufacture of quinine and formerly used as a cheap substitute for it.
Origin of quinoidine
First recorded in 1835-45; quin(ine) + -oid + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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quinoidine in Medicine

quinoidine qui·noi·dine (kwĭ-noi'dēn', -dĭn)
A brownish-black mixture of alkaloids remaining after extraction of crystalline alkaloids from cinchona bark, used as a quinine substitute.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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