noun

feedback

Output returned to a system to influence its further operation.

The controller uses feedback about motor speed to adjust its power.

Etymology

The compound pictures a system feeding part of its output back into itself. The returned information or signal can then change the system’s subsequent operation.

More examples

  • The microphone picks up sound from the speaker, causing shrill feedback.
  • We use customer feedback to improve the ordering process.
  • Negative feedback keeps the room temperature steady.

Forms

feedback

Similar words

response
A reaction that need not influence the system producing it.
input
Information entering a system, not necessarily returned from its output.