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English definition of “etiology”

etiology

noun [U]     /ˌiː.tiˈɒl.ə.dʒi/ US  /-ˈɑː.lə-/
the scientific study of the cause of diseasesMedical studies and the people who study them
(Definition of etiology noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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