\Pol`y*phon"ic\, a. [Gr. ?; poly`s many + ? sound:
cf. F. polyphone.]
1. Having a multiplicity of sounds.
2. Characterized by polyphony; as, Assyrian polyphonic
   characters.
3. (Mus.) Consisting of several tone series, or melodic
   parts, progressing simultaneously according to the laws of
   counterpoint; contrapuntal; as, a polyphonic composition;
   -- opposed to {homophonic}, or {monodic}.