QUINONE
- yellow, crystalline, cyclic unsaturated diketone, C6H4O2, formed by oxidizing aniline or hydroquinone: used chiefly in photography and in tanning leather
- any of a class of compounds of this type
- either of two isomeric cyclic crystalline compounds C6H4O2 that are derivatives of benzene
- a crystalline derivative of aniline, also KINONE [n -S]