In music, heterophony is a type of texture characterized by the simultaneous variation of a single melodic line. Such a texture can be regarded as a kind of complex monophony in which there is only one basic melody, but realized at the same time in multiple voices, each of which plays the melody differently, either in a different rhythm or tempo, ...
• (n.) An abnormal state of the voice.
in music, texture resulting from simultaneous performances of melodic variants of the same tune, typical of Middle Eastern practices as well as of a ... [3 related articles]
Het`er·oph'o·ny noun [ Hetero- + Greek ... voice.] (Medicine) An abnormal state of the voice. Mayne. 
heterophony A singing or sounding of the same melody by two or more voices or instruments usually with some modifications (as in rhythm or ornamentation) by one or both of the performers.heterophony, heterophonic, heterophonous Simultaneous performance by two or more singers or instrumentalists of different versions of the same melody.