investigation

 
Pronunciation: /ɪnˌvɛstɪˈgeɪʃ(ə)n/

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)