Tet`ra*meth"yl*ene (?), n. [Tetra- + methylene.] Chem. (a)
A hypothetical hydrocarbon, C4H8, analogous to trimethylene, and regarded as the base of well-known series or derivatives.
(b)
Sometimes, an isomeric radical used to designate certain compounds which are really related to butylene.
© Webster 1913.