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The Collaborative International Dictionary
chinone

Quinone \Qui"none\, n. [Quinine + ketone.] (Chem.) A crystalline substance, C6H4O2 (called also benzoketone), first obtained by the oxidation of quinic acid and regarded as a double ketone; also, by extension, any one of the series of which quinone proper is the type.

Wiktionary
chinone

n. (context chemistry English) (dated form of quinone English)