SINCE 1828
controlled experiment
noun
plural controlled experiments
Definition of controlled experiment
: an experiment in which all the variable factors in an experimental group and a comparison control group are kept the same except for one variable factor in the experimental group that is changed or altered
… few controlled experiments have been formally conducted by an impartial organization to prove or disprove the claims.— Noel Vietmeyer In the next few years, non-university researchers will run controlled experiments with the fungi on mosquitoes in Africa and locusts in China.— Carrie Wells … Bat Conservation International conducted a controlled experiment in which some of the turbines were temporarily shut down during specific wind conditions.— Kirk Swauger
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