Definition of polyphony

• n. - Multiplicity of sounds, as in the reverberations of an echo.
• n. - Plurality of sounds and articulations expressed by the same vocal sign.
• n. - 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.