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quinone

[kwi-nohn, kwin-ohn]
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noun Chemistry.
  1. a yellow, crystalline, cyclic unsaturated diketone, C6H4O2, formed by oxidizing aniline or hydroquinone: used chiefly in photography and in tanning leather.
  2. any of a class of compounds of this type.
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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. 2018

Examples from the Web for quinone

Historical Examples

  • The quinone with which we are at present concerned is anthraquinone.

    Coal

    Raphael Meldola

  • The various pathological conditions mentioned before may be ascribed to irritation caused by quinone di-imine.

  • The so-called chrysophanic acid found in Xanthoria (Physcia) parietina is not an acid but a quinone and is better termed physcion.

  • Thus there is quinone itself, or benzoquinone, which is benzene with two atoms of oxygen replacing two atoms of hydrogen.

    Coal

    Raphael Meldola

  • Phenanthrene forms a quinone which has been utilized as a source of colouring-matters, but these are comparatively unimportant.

    Coal

    Raphael Meldola


British Dictionary definitions for quinone

quinone

noun
  1. another name for benzoquinone
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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

quinone in Medicine

quinone

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

quinone in Science

quinone

[kwĭ-nōn, kwĭnōn′]
  1. 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.
  2. 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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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.