trimethylene Meaning, Definition & Usage

Tri*meth"yl*ene noun
Definitions
  1. (Chem.) 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.<-- usu. called cyclopropane, because the three carbons form a ring: CH2 / \ H2C---CH2 -->

Webster 1913