ene

/iːn/
noun
  1. A suffix used in chemistry to form names of unsaturated hydrocarbons containing a double bond, such as 'ethylene' or 'benzene'.
    • The molecule butene has four carbon atoms and one double bond.
    • The chemist explained that 'propene' is a simple alkene.
    • Many plastics are made from monomers that end in -ene.
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