harmonic āļāļ·āļāļāļ°āđāļĢ harmonic āļāļ·āļāļāļ°āđāļĢ Of or relating to harmony.Pleasing to the ear: harmonic orchestral effects. Characterized by harmony: a harmonic liturgical chant. Of or relating to harmonics.Integrated in nature.Any of a series of musical tones whose frequencies are integral multiples of the frequency of a fundamental tone.A tone produced on a stringed instrument by lightly touching an open or stopped vibrating string at a given fraction of its length so that both segments vibrate. Also called overtone, partial, partial tone.The theory or study of the physical properties and characteristics of musical sound.Physics A wave whose frequency is a whole-number multiple of that of another.