double bond: Meaning and Definition of

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.