natural harmonic noun2 •a sound produced by lightly touching the string as opposed to pressing it against the fingerboard, usually with the actual pitch notated •The series of pitches produced by a wind instrument without modulation by a mute, valves, or keys.Desirably, a tuner gives the separate Larigot 1 1/3' rank the same perfect pitch as the natural harmonic. — 1970 formsnatural harmonics
