- distortion in which the waveform of the input signal is altered, due to a nonlinear response.
- Distortion in which the waveform of the input signal is altered, and in which there are harmonics introduced. linear distortion does not introduce harmonics.
- In an amplifier, the component of the output signal which alters the essential characteristics of the input signal, due to a nonlinear response. Also called amplitude distortion (2).