multiphase

from WordNet (r) 3.0 (2006)

multiphase
    adj 1: of an electrical system that uses or generates two or
           more alternating voltages of the same frequency but
           differing in phase angle [syn: {multiphase}, {polyphase}]

from The Collaborative International Dictionary of English v.0.48

Multiphase \Mul"ti*phase\, a. [Multi- + phase.]
   Having many phases; specif. (Elec.), pertaining to, or
   designating, a generator producing, or any system conveying
   or utilizing, two or more waves of pressure, or electromotive
   force, not in phase with each other; polyphase.
   [Webster 1913 Suppl.]