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)