double bond

American  

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 CH 2 =CH 2 ; CH 2 :CH 2 ; CH 2 ::CH 2 .

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double bond British  

noun

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

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double bond Scientific  

/ 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.

2. See more at covalent bond

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Etymology

Origin of double bond

First recorded in 1885–90

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How does double-bond compare to similar and commonly confused words? Explore the most common comparisons:

• single bond vs. double bond