heterophony: Meaning and Definition of

het•er•oph•o•ny

Pronunciation: (het"u-rof'u-nē), [key]
— n. Music.
  1. the simultaneous performance of the same melodic line, with slight individual variations, by two or more performers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.