Compression point
The compression point is a metric describing an aspect of electronic amplifiers. For example, the 1-dB compression point is the output power of the amplifier at which it differs from an ideal linear amplifier by more than 1 dB. So a larger 1-dB compression point means that the amplifier can produce larger outputs. It will often be quoted by manufacturers of amplifiers..
The compression point is sometimes used to define the upper limit of the dynamic range of an amplifier. A rule of thumb that holds for many linear radio-frequency amplifiers is that the 1 dB compression point point falls approximately 10 dB below the third-order intercept point.