investigation Pronunciation: /ɪnˈvestəˈɡeɪʃən; ɪnˌvestɪˈɡeɪʃən/Translate investigation | into French | into German | into Italian Spanish translation of investigationn u c 1 (detailed examination) estudio (m) 2 (official, scientific) investigación (f)investigation in other Oxford dictionaries Definition of investigation in the British & World English dictionary Definition of investigation in the US English dictionary