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investigate

in·ves·ti·gate / inˈvestiˌgāt/ • v. [tr.] carry out a systematic or formal inquiry to discover and examine the facts of (an incident, allegation, etc.) so as to establish the truth: police are investigating the alleged beating. ∎  carry out research or study into (a subject, typically one in a scientific or academic field) so as to discover facts or information: future studies will investigate whether long-term use of the drugs could prevent cancer. ∎  make inquiries as to the character, activities, or background of (someone): everyone with a possible interest in your brother's death must be thoroughly investigated. ∎  [intr.] make a check to find out something: when you didn't turn up, I thought I'd better come back to investigate. DERIVATIVES: in·ves·ti·ga·tor / -ˌgātər/ n. in·ves·ti·ga·to·ry / -gəˌtôrē/ adj.

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investigation

in·ves·ti·ga·tion / inˌvestiˈgāshən/ • n. the action of investigating something or someone; formal or systematic examination or research: he is under investigation for receiving illicit funds. ∎  a formal inquiry or systematic study: an investigation has been launched into the potential impact of the oil spill. DERIVATIVES: in·ves·ti·ga·tion·al / -shənl/ adj.

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investigate

investigate XVI. f. pp. stem of L. investīgāre, f. IN-1 + vestīgāre track, trace out; see VESTIGE, -ATE3.
So investigation XV. — (O)F. or L.

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investigate

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