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investigation

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Definition of investigation

noun

[mass noun]
  • the action of investigating something or someone; formal or systematic examination or research:he is under investigation for receiving illicit funds
  • [count noun] a formal inquiry or systematic study:an investigation into fresh allegations of malpractice a murder investigation

Derivatives

investigational

adjective

Origin:

late Middle English: from Latin investigatio(n-), from the verb investigare (see investigate)

investigation in other Oxford dictionaries

Definition of investigation in the US English dictionary
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