Valylene
Pronunciation : Val"yl*ene
Part of Speech : n.
Etymology : [Valerian + -yl.] (Chem.)
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913