Meaning of “investigation” - Learner’s Dictionary


noun [ C, U ] us uk /ɪnˌvestɪˈɡeɪʃən/

B2 a process in which officials try to discover all the facts about something, especially a crime or an accident:

Police have begun an investigation into his death.
The cause of the fire is still under investigation (= being investigated).

(Definition of “investigation” from the Cambridge Learner’s Dictionary © Cambridge University Press)