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English definition of “investigation”

investigation

noun [C or U]     /ɪnˌves.tɪˈɡeɪ.ʃən/
B2 the act or process of examining a crime , problem , statement , etc. carefully , especially to discover the truth : An investigation has been under way for several days into the disappearance of a 13-year-old boy . a full / thorough investigation of the incident Currently , the individuals who might have caused the accident are subject to/under investigation.Analysing and evaluatingAssessing and estimating value
(Definition of investigation noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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