[ 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.
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

British Dictionary definitions for quinone


/ (kwɪˈnəʊn, ˈkwɪnəʊn) /


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


[ kwĭ-nōn, kwĭnōn′ ]


Any of a class of aromatic compounds found widely in plants, especially the crystalline form used in making dyes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for quinone


[ kwĭ-nōn, kwĭnōn′ ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.