[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 and formerly used as a cheap substitute for it.

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.


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