harmonic
har-mon-ic
noun
A musical overtone whose frequency is an exact multiple of the fundamental frequency.
"He played a clear harmonic on the guitar."
adjective
Relating to musical harmony or to waves that are integer multiples of a base frequency.
"The choir produced a rich harmonic sound."
Thesaurus
Synonyms: harmonious, sympathetic, harmonised, consonant, harmonized, harmonical
Antonyms: nonharmonic