Main Entry: feed·back

Pronunciation: \ˈfēd-ˌbak\

Function: noun

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)
2 a : the partial reversion of the effects of a process to its source or to a preceding stage b : 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