quinoidine

[ 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.

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Origin of quinoidine

First recorded in 1835–45; quin(ine) + -oid + -ine2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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Medical definitions for quinoidine

quinoidine
[ kwĭ-noidēn′, -dĭn ]

n.

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.