a. [ Gr. &unr_;; poly`s many + &unr_; sound: cf. F. polyphone. ] 1. Having a multiplicity of sounds. [ 1913 Webster ]
2. Characterized by polyphony; as, Assyrian polyphonic characters. [ 1913 Webster ]
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. [ 1913 Webster ]