Meaning

noun any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyes

originEtymology tree English quinine Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English quinic German Ketonbor. English ketone English -one English quinone From quinic acid + -one, since it is one of the compounds obtained upon oxidation of quinic acid.

Etymology from Wiktionary, CC BY-SA 3.0