Val"yl*ene (?), n. [Valerian + - yl.] (Chem.) A volatile liquid hydrocarbon, C₅H₆, related to ethylene and acetylene, but possessing the property of unsaturation in the third degree. It is the only known member of a distinct series of compounds. It has a garlic odor.

Val"yl*ene (?), n. [Valerian + - yl.] (Chem.) A volatile liquid hydrocarbon, C₅H₆, related to ethylene and acetylene, but possessing the property of unsaturation in the third degree. It is the only known member of a distinct series of compounds. It has a garlic odor.