General English


Cars & Driving

  • noun information in the form of a signal from a sensor, which is then used in a closed loop system to regulate the mixture strength, e.g.


  • noun information, especially about the result of an activity which allows adjustments to be made to the way it is done in future


  • noun information from one source which can be used to modify something or provide a constructive criticism of something


  • The return of a fraction of the output of a circuit, device, piece of equipment, or system, to the input of the same circuit, device, piece of equipment, or system. Feedback may be intentional, as in a closed-loop control system, or unintentional, as in howling. When the feedback is in phase with the original input signal, it is positive feedback. When the feedback is 180 degrees out-of-phase the original input signal, it is negative feedback.
  • The mechanism employed to provide feedback (1).
  • The use of feedback (1) in a control system. Also, the output returned to the input in such a system.

Information & Library Science

  • noun comments from users or customers about what has been proposed or done

Media Studies

  • noun response to a publication from readers or colleagues
  • noun a high-pitched howling sound caused by the signal from a microphone being transmitted through speakers, which is then picked up by the microphone, e.g. when a radio listener phones in and has the radio playing in the background.


  • noun the linking of the result of an action back to the action itself


  • noun comments in the form of opinions about and reactions to something such as athletic performance, intended to provide useful information for future development