Meaning of double bond

dou'ble bond'

Pronunciation: [key]
— Chem. Chem.
  1. 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 CH=CH; CH:CH; CH::CH.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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