monophase,a.Electr.|ˈmɒnəʊfeɪz| [f. mono- + phase n. 3.] Exhibiting a single phase: cf.polyphase. 1902L. Bell in Encycl.Brit. XXXI. 888/2 Monophase Induction Motors closely resemble the polyphase motors in construction, but have only a single-phase winding in the primary.