'Polyphony' definitions:

Definition of 'polyphony'

From: WordNet
noun
Music arranged in parts for several voices or instruments [syn: polyphony, polyphonic music, concerted music] [ant: monody, monophonic music, monophony]

Definition of 'Polyphony'

From: GCIDE
  • Polyphony \Po*lyph"o*ny\, n. [Gr. ?.]
  • 1. Multiplicity of sounds, as in the reverberations of an echo. [1913 Webster]
  • 2. Plurality of sounds and articulations expressed by the same vocal sign. [1913 Webster]
  • 3. (Mus.) Composition in mutually related, equally important parts which share the melody among them; contrapuntal composition; -- opposed to homophony, in which the melody is given to one part only, the others filling out the harmony. See Counterpoint. [1913 Webster]