Search Result for "harmonics": 
Wordnet 3.0

NOUN (1)

1. the study of musical sound;

The Collaborative International Dictionary of English v.0.48:

Harmonics \Har*mon"ics\ (-[i^]ks), n. 1. The doctrine or science of musical sounds. [1913 Webster] 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. [1913 Webster]
WordNet (r) 3.0 (2006):

harmonics n 1: the study of musical sound
Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "harmonics": accord, accordance, attune, attunement, chime, chiming, concentus, concert, concord, concordance, consonance, consonancy, consort, diapason, euphony, harmony, heavy harmony, homophony, monochord, monody, symphony, synchronism, synchronization, three-part harmony, tune, unison, unisonance