adjective Electricity.
  1. having more than one phase.
  2. of or relating to a set of alternating currents that have the same frequency but different phases and that enter a specified region at more than two points.

Origin of polyphase

First recorded in 1890–95; poly- + phase
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for polyphase

Historical Examples of polyphase

British Dictionary definitions for polyphase


  1. Also: multiphase (of an electrical system, circuit, or device) having, generating, or using two or more alternating voltages of the same frequency, the phases of which are cyclically displaced by fractions of a periodSee also single-phase, two-phase, three-phase
  2. having more than one phase
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012