investigation

/ɪnˌvɛstɪˈɡeɪʃən/
noun
  1. The process of trying to find out the truth about something, especially a crime or problem.
    • Her investigation of the company's finances revealed several errors.
    • The police launched an investigation into the robbery.
    • After a long investigation, the scientists found the cause of the disease.
  2. A careful examination or study of a subject or situation.
    • We are conducting an investigation into customer satisfaction.
    • The investigation of the accident took several months.
    • The journalist's investigation uncovered corruption in the city government.