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Definition of controlled experiment noun from the Oxford Advanced Learner's Dictionary

controlled experiment

noun

/kənˌtrəʊld ɪkˈsperɪmənt/

/kənˌtrəʊld ɪkˈsperɪmənt/

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a scientific experiment in which only one condition is changed in each of several tests in order to find out what effect that condition has on the results of the experiment
- Controlled experiments show how shore crabs of different sizes respond to ship noise.
Topics Scientific researchc2

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See controlled experiment in the Oxford Advanced American Dictionary

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