<p><strong>Noun</strong></p><ul><li>Electronics</li><li>the process of returning part of the output of a circuit, system, or device to the input, either to oppose the input (negative feedback) or to aid the input (positive feedback).</li><li>acoustic feedback</li><li>the furnishing of data concerning the operation or output of a machine to an automatic control device or to the machine itself, so that subsequent or ongoing operations of the machine can be altered or corrected.</li><li>a reaction or response to a particular process or activity: He got very little feedback from his speech.</li><li>evaluative information derived from such a reaction or response: to study the feedback from an audience survey.</li><li>Psychology: knowledge of the results of any behavior, considered as influencing or modifying further performance.</li><li>Biology: a self-regulatory biological system, as in the synthesis of some hormones, in which the output or response affects the input, either positively or negatively.</li></ul>