an obsolete form of harmonic (sense 1), harmonic (sense 2)
harmonic in British English
(hɑːˈmɒnɪk)
adjective
1.
of, involving, producing, or characterized by harmony; harmonious
2. music
of, relating to, or belonging to harmony
3. mathematics
a.
capable of expression in the form of sine and cosine functions
b.
of or relating to numbers whose reciprocals form an arithmetic progression
4. physics
of or concerned with an oscillation that has a frequency that is an integral multiple of a fundamental frequency
5. physics
of or concerned with harmonics
noun
6. physics, music
a component of a periodic quantity, such as a musical tone, with a frequency that is an integral multiple of the fundamental frequency. Thefirst harmonic is the fundamental, the second harmonic (twice the fundamental frequency) is the first overtone, the third harmonic (three times the fundamental frequency) is the second overtone, etc
7. music
(not in technical use) overtone: in this case, the first overtone is the first harmonic, etc