D defs.my
Entry 1 sense Webster, 1913

Heptylene

· Hep·tyl·ene · IPA
01 n. A colorless liquid hydrocarbon, C7H14, of the ethylene series; also, any one of its isomers. Called also heptene.
  1. 1.
    A colorless liquid hydrocarbon, C7H14, of the ethylene series; also, any one of its isomers. Called also heptene.(Chem.) Also: heptene