/ Dictionary / Index P polyphase: Meaning and Definition of Find definitions for: pol•y•phase Pronunciation: (pol'ē-fāz"), [key] — adj. Elect. having more than one phase. of or pertaining 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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: polyphase (Thesaurus) polypharmacy polyphasic Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language