closed loop: Meaning and Definition of

closed' loop'

1. the complete path followed by a signal as it is fed back from the output of a circuit, device, or system to the input and then back to the output. Cf. feedback loop.

closed-loop

1. of or pertaining to a processing system in which effluents are recycled, that is, treated and returned for reuse.
2. of or pertaining to an automatic control system operating on a feedback principle. Cf. feedback (def. 2).