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benzene ring

noun, Chemistry
1.
the graphic representation of the structure of benzene as a hexagon with a carbon atom at each of its points. Each carbon atom is united with an atom of hydrogen, one or more of which may be replaced to form benzene derivatives.
Also called benzene nucleus.
Origin
1875-1880
1875-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for benzene-nucleus

benzene ring

noun
1.
the hexagonal ring of bonded carbon atoms in the benzene molecule or its derivatives Also called benzene nucleus See also Kekulé formula
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
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benzene-nucleus in Medicine

benzene ring n.
The hexagonal ring structure in the benzene molecule and its substitutional derivatives, each vertex of which is occupied and distinguished by a carbon atom.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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benzene-nucleus in Science
benzene ring  

A hexagonal arrangement of six carbon atoms, each atom bonded to its adjacent atoms by a single covalent bond, and by an unusual ring bond of electrons shared by all six carbon atoms. The benzene ring is a basic component of many organic compounds, especially the aromatic hydrocarbons. In benzene itself, each carbon atom is also bonded to a hydrogen atom; in derivatives of benzene, one or more of the hydrogen atoms is replaced by other atoms or groups of atoms.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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