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• diene
  diene

  noun

  any compound, as 1,3-butadiene, CH 2 =CH−CH=CH 2 , that contains two double bonds.
• -diene
  -diene

  combining form

  denoting an organic compound containing two double bonds between carbon atoms

diene

American  

[dahy-een, dahy-een] / ˈdaɪ in, daɪˈin /

noun

Chemistry.

1. any compound, as 1,3-butadiene, CH 2 =CH−CH=CH 2 , that contains two double bonds.

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-diene ¹ British  

combining form

1. denoting an organic compound containing two double bonds between carbon atoms

   butadiene

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diene ² British  

/ ˈdaɪiːn /

noun

1. chem a hydrocarbon that contains two carbon-to-carbon double bonds in its molecules

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Etymology

Origin of diene

First recorded in 1915–20; di- ¹ + -ene