quinoidine

noun

qui·​noi·​dine

kwə̇ˈnȯiˌdēn,

-dᵊn

variants or quinoidin

-dᵊn

plural -s

: a bitter brownish resinous mixture often molded into sticks of amorphous alkaloids obtained as a by-product in the extraction of cinchona bark for crystalline alkaloids and formerly used as a substitute for quinine

Word History

Etymology

International Scientific Vocabulary quin- + -oid + -ine or -in

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