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English definition of “control”

control

noun [C] (IN AN EXPERIMENT)    /kənˈtrəʊl/ US  /-ˈtroʊl/ specialized
in an experiment , an object or system that is not changed so that you can compare it with similar objects or systems that are intentionally changed Keeping and staying the sameNot able to be changed
(Definition of control noun (IN AN EXPERIMENT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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