| Subject | English | German |
| phys. | nonlinear distortion coefficient | Klirrkoeffizient (n-ter Ordnung, of the n-th order) |
| phys. | nonlinear distortion factor | Klirrfaktor n-ter Ordnung harmonic distortion coefficient (of the n-th order) |
| phys. | nonlinear distortion factor | Verzerrungsfaktor |
| tech. | nonlinear distortion factor | Klirrfaktor |