a. [ Poly- + phase. ] (Elec.) Having or producing two or more phases; multiphase; as, a polyphase machine, a machine producing two or more pressure waves of electro-motive force, differing in phase; a polyphase current. [ Webster 1913 Suppl. ]

n. (Elec.) A machine generating more than one pressure wave; a multiphaser. [ Webster 1913 Suppl. ]