quinone

[ kwi-nohn, kwin-ohn ]

/ kwɪˈnoʊn, ˈkwɪn oʊn /

noun Chemistry.

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.

Nearby words

quinoid, quinoidine, quinol, quinoline, quinolone, quinone, quinone diimine, quinonimine, quinonoid, quinoxaline, quinq.

Also chinone.

Origin of quinone

First recorded in 1850–55; quin(ic acid) + -one

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for quinone

Phenanthrene forms a quinone which has been utilized as a source of colouring-matters, but these are comparatively unimportant.
Coal|Raphael Meldola
The various pathological conditions mentioned before may be ascribed to irritation caused by quinone di-imine.
Principles and Practice of Fur Dressing and Fur Dyeing|William E. Austin
The so-called chrysophanic acid found in Xanthoria (Physcia) parietina is not an acid but a quinone and is better termed physcion.
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 5|Various
Thus there is quinone itself, or benzoquinone, which is benzene with two atoms of oxygen replacing two atoms of hydrogen.
Coal|Raphael Meldola

The compound is readily prepared by the action of sulphurous acid or any other reducing agent on the quinone.
Coal|Raphael Meldola

British Dictionary definitions for quinone

quinone

/ (kwɪˈnəʊn, ˈkwɪnəʊn) /

noun

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

Medicine definitions for quinone

quinone

[ kwĭ-nōn′, kwĭn′ōn′ ]

n.

Any of a class of aromatic compounds found widely in plants, especially the crystalline form used in making dyes.

Science definitions for quinone

quinone

[ kwĭ-nōn′, kwĭn′ōn′ ]

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.