Trimethylene
Pronunciation : Tri*meth"yl*ene
Part of Speech : n.
Definition : Defn: A gaseous hydrocarbon, C3H6, isomeric with propylene and obtained from it indirectly. It is the base of a series of compounds analogous to the aromatic hydrocarbons.
(Chem.)
Source : Webster's Unabridged Dictionary, 1913