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n. Any of a class of aromatic compounds found widely in plants, especially the yellow crystalline form, C6H4O2, used in making dyes, tanning hides, and photography.

n. any of a class of aromatic compounds having two carbonyl functional groups in the same six-membered ring

n. 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.

n. The general name applied to all benzene derivatives in which two hydrogen atoms are replaced by two oxygen atoms.

n. Specifically, a compound obtained by distilling kinic acid with diluted sulphuric acid and peroxid of manganese, or by the oxidation of aniline with chromic acid.

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

"Drink tonic water the quinone is a nerve relaxant and try Naphcon A eye drops."

compound    chemical compound   

benzoketone    chinone    kinone   

ubiquinone    coenzyme q   

benzoquinone    hydroquinone   

ristocetin    redox-active    costimulatory    redox    cell-adhesion    co-stimulatory    triatomic    cellsurface    deoxyribonucleic    pleiotropic