overtones is a form of:

Overtone



noun
1.
(any of the tones above the lowest in a harmonic series, subtle extra quality or implication) high overtone frequency សូរខ្ពស់ជាងសូរឯទៀត, overtone of suspicion ន័យមិនបញ្ចេញអោយឃើញត្រង់
ENGLISH MEANING
noun
1.
One of the harmonics faintly heard with and above a tone as it dies away, produced by some aliquot portion of the vibrating sting or column of air which yields the fundamental tone; one of the natural harmonic scale of tones, as the octave, twelfth, fifteenth, etc.; an aliquot or "partial" tone; a harmonic.