a 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.
- Also chinone.
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How to use quinone in a sentence
The gradation of color is quite pronounced in the case of selenonaphthene quinone.
Thus there is quinone itself, or benzoquinone, which is benzene with two atoms of oxygen replacing two atoms of hydrogen.
Phenanthrene forms a quinone which has been utilized as a source of colouring-matters, but these are comparatively unimportant.
The compound is readily prepared by the action of sulphurous acid or any other reducing agent on the quinone.
The so-called chrysophanic acid found in Xanthoria (Physcia) parietina is not an acid but a quinone and is better termed physcion.
British Dictionary definitions for quinone
another name for benzoquinone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for quinone
Any of a class of organic compounds that occur naturally as pigments in bacteria, plants, and certain fungi. Quinones have two carbonyl groups (CO) in an unsaturated six-member carbon ring.
A yellow crystalline compound belonging to this class, used in photography, to make dyes and to tan hides. Chemical formula: C6H4O2.
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