Definitions for "Common-Mode Rejection Ratio"
The ratio of the common-mode interference voltage at the input of a circuit, to the corresponding interference voltage at the output.
A measure of an instrument's ability to reject interference from a common mode signal, usually expressed in decibels (dB).
(CMRR) The ratio of op-amp differential gain to common-mode gain. A measure of an op-amp's ability to reject common-mode signals such as noise.