quinoidine

American  

[kwi-noi-deen, -din] / kwɪˈnɔɪ din, -dɪn /

noun

Pharmacology.

1. 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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Etymology

Origin of quinoidine

First recorded in 1835–45; quin(ine) + -oid + -ine ²