, past participle of investigare 'to follow the track of', from vestigium 'track'
1 [intransitive and transitive]to try to find out the truth about or the cause of something such as a crime, accident, or scientific problem:
The state police are investigating the incident.
The study investigates the impact of violent TV programming on children.
I heard a noise and went downstairs to investigate.
2 [transitive]to try to find out more about someone's character, actions etc, because you think they may have been involved in a crime:
Penney was already being investigated by the police on suspicion of murder.
WORD FOCUS: police WORD FOCUS: police people in the police force:police officer, policeman, policewoman, detective, copinformal the building where the police work:police station what the police do:investigatecrimes, find/collectevidence, arrest people who they think are guilty of a crime,question/interrogate people about crimes,hold/detain people in custody, charge people with crimes,release people if they are innocent ➔ See alsopolice
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.