double bond

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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.

Nearby words

  1. double blind experiment,
  2. double block,
  3. double blossom,
  4. double bogey,
  5. double boiler,
  6. double bridle,
  7. double centering,
  8. double check,
  9. double chin,
  10. double cloth

Origin of double bond

First recorded in 1885–90

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for double bond

  • Petroleum when cracked up to make gasoline gives isoprene or other double-bond compounds that go over into some form of rubber.

    Creative Chemistry|Edwin E. Slosson


British Dictionary definitions for double bond

double bond

noun

a type of chemical bond consisting of two covalent bonds linking two atoms in a molecule
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 double bond

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.

Science definitions for double bond

double bond

[dŭbəl]

A type of covalent bond in which two electron pairs are shared between two atoms. Each atom contributes two electrons to the bond. See more at covalent bond.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.