closed loop

Noun

 * 1)  A path whose initial point is equal to its terminal point.
 * 2) A feedback loop, especially when found in:
 * 3)  A.
 * 4)  An.
 * 5)  A.
 * 6)  A.
 * 7)  The process of pulling water from one area of a reef aquarium and pumping it immediately elsewhere in the tank to create higher flow and minimize dead spots.
 * 8)  An economy in which materials are consistently reused rather than discharged as waste.
 * 1)  The process of pulling water from one area of a reef aquarium and pumping it immediately elsewhere in the tank to create higher flow and minimize dead spots.
 * 2)  An economy in which materials are consistently reused rather than discharged as waste.