Tri*meth"yl*ene (?), n. 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.

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