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English definition of “investigation”

investigation

noun [C, U]     /ɪnˌvestɪˈɡeɪʃən/
B2 a process in which officials try to discover all the facts about something, especially a crime or an accident : Police have begun an investigation into his death . The cause of the fire is still under investigation (= being investigated ).Analysing and evaluatingAssessing and estimating value
(Definition of investigation noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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