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benzoquinone

British  
/ ˌbɛnzəʊkwɪˈnəʊn, -ˈkwɪnəʊn /

noun

  1. Also called: quinone.  Systematic name: cyclohexadiene-1,4-quinone.  a yellow crystalline water-soluble unsaturated ketone manufactured from aniline and used in the production of dyestuffs. Formula: C 6 H 4 O 2

"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

Example Sentences

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When threatened, they mix chemicals in their hindquarters, hydrogen peroxide and hydroquinones, to produce an explosion of searing benzoquinone irritant.

From The Guardian

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

From Project Gutenberg