closed loop

noun Computers, Electronics.
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.
Compare feedback loop.
Dictionary.com Unabridged

closed-loop

[klohzd-loop]
adjective Engineering.
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. Compare feedback ( def 2 ).

Origin:
1950–55

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
Engines are cooled with closed-loop freshwater systems that, in turn, are cooled by adjacent closed loops of seawater.
You're going to have to have adaptive optics and a pretty robust and sophisticated closed-loop tracking system.
The closed-loop device would make that decision for them.
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