What Does Harmonic Mean?
A harmonic is a signal or wave with a frequency that is a ratio of another reference wave or signal. Depending upon the integer multiple of the frequency to the original frequency, the respective harmonic wave can be termed as 2f, 3f and so on where f stands for the frequency of the reference wave.
Techopedia Explains Harmonic
The term harmonic is used to refer to waveforms that correlate with each other based on their frequencies. It is always applied to any member of a harmonic series. A harmonic is a signal whose frequency is an integral multiple of the frequency of a reference signal.