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double bond

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double bond

 
Use double bond in a Sentence
–noun Chemistry.
a chemical linkage consisting of two covalent bonds between two atoms of a molecule, represented in chemical formulas by two lines, two dots, or four dots, as CH2=CH2; CH2:CH2; CH2::CH2.
Origin:
1885–90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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double bond  
n.  A covalent bond in which two electron pairs are shared between two atoms.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: double bond
Function: noun
: a chemical bond in which two pairs of electrons are shared by two atoms in a molecule and which is usually represented inchemical formulas by two lines (as in the formula for ethylene H2C=CH2) —compare TRIPLE BOND;—see UNSATURATED b
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

double bond n.
Symbol Δ
A covalent bond in which two electron pairs are shared between two atoms.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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