Definition:(verb) confirm the truth of; "Please ####### that the doors are closed"; "####### a claim"(verb) to declare or affirm solemnly and formally as true; "Before God I swear I am innocent" (verb) attach or append a legal verification to (a pleading or petition) (verb) ####### or regulate by conducting a parallel experiment or comparing with another standard, of scientific experiments; "Are you controlling for the temperature?"
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