noun Music.

the simultaneous performance of the same melodic line, with slight individual variations, by two or more performers.

Origin of heterophony

First recorded in 1940–45; hetero- + -phony
Related formshet·er·o·phon·ic [het-er-uh-fon-ik] /ˌhɛt ər əˈfɒn ɪk/, adjective
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British Dictionary definitions for heterophony



the simultaneous performance of different versions of the same melody by different voices or instruments
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