Medical Definition of feedback
1: the return to the input of part of the output of a machine, system, or process (as for producing changes in an electronic circuit that improve performance or in an automatic control device that provide self-corrective action)
2a: the partial reversion of the effects of a process to its source or to a preceding stageb: the return to a point of origin of evaluative or corrective information about an action or process <patient feedback was solicited>; also : the information so transmitted
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