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English definition of “empirical”

empirical

adjective     /ɪmˈpɪr.ɪ.kəl/
C2 based on what is experienced or seen rather than on theory: This theory needs to be backed up with solid empirical data/evidence. Empirical studies show that some forms of alternative medicine are extremely effective.True, real, false, and unreal empirically     /-i/ adverb True, real, false, and unreal
(Definition of empirical adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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