Definify.com
Webster 1913 Edition
Harmonics
Har-mon′ics
(-ĭks)
, Noun.
1.
The doctrine or science of musical sounds.
2.
pl.
(Mus.)
Secondary and less distinct tones which accompany any principal, and apparently simple, tone, as the octave, the twelfth, the fifteenth, and the seventeenth. The name is also applied to the artificial tones produced by a string or column of air, when the impulse given to it suffices only to make a part of the string or column vibrate; overtones.
Webster 1828 Edition
Harmonics
HARMON'ICS
,Noun.
1.
The doctrine or science of musical sounds.2.
Derivative sounds, generated with predominant sounds, and produced by subordinate vibrations of a chord or string, when its whole length vibrates. These shorter vibrations produce more acute sounds,and are called acute harmonics.3.
Grave harmonics are low sounds which accompany every perfect consonance of two sounds.