double bond

double bond ExamplesWord Origin noun Chemistry.

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 CH2=CH2; CH2:CH2; CH2::CH2.

Origin of double bond First recorded in 1885–90 Examples from the Web for double bond Historical Examples of 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

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

double bond in Medicine double bond n. Symbol Δ

1. A covalent bond in which two electron pairs are shared between two atoms.

double bond in Science double bond [dŭb′əl]

1. 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.