Definition of investigation in English:


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  • 1The action of investigating something or someone; formal or systematic examination or research.

    ‘he is under investigation for receiving illicit funds’
    • ‘A spokesman for the bus company said the incident was still under investigation.’
    • ‘The cause of the blaze is under investigation, but it is thought to have started accidentally.’
    • ‘He is also under investigation for opening up bogus shell companies to help his clients hide money.’
    • ‘The police chief would not elaborate, saying that the matter was under investigation.’
    • ‘Probably at any one time, there is a politician under investigation, or on trial or in prison.’
    • ‘The cause of a blaze which destroyed a three storey mill in Radcliffe is under investigation.’
    • ‘The cause of the fire is under investigation but is not believed to be arson.’
    • ‘These algae occur on a worldwide basis but the final identity is still under investigation.’
    • ‘The outbreak in Anglesey is at an abattoir which has been under investigation for some time.’
    • ‘A further three people are now under investigation for a series of alleged offences.’
    • ‘The fires are being treated as suspicious and are under investigation by police.’
    • ‘The Ministry of Defence said the cause of the blast was still under investigation.’
    • ‘He volunteered not to practise at his surgery while under investigation by the police.’
    • ‘The cause of the fire has not been established and is still under investigation.’
    • ‘The attack is still under investigation by police and has not been made public until today.’
    • ‘He is under investigation by the Assets Bureau and he needs the lads to help him get to the airport.’
    • ‘It was under investigation for substandard care and abusive treatment to its patients.’
    • ‘A faculty member at the university who initiated the study is now under investigation.’
    • ‘Early evaluation did not address this, but such investigation is now under way.’
    • ‘The second question is whether time needs to be allowed for further investigation.’
    examination, inquiry, study, inspection, exploration, consideration, analysis, appraisal
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    1. 1.1A formal inquiry or systematic study.
      ‘an investigation has been launched into the potential impact of the oil spill’
      • ‘This is followed by a formal report once all investigations have been completed.’
      • ‘After all the inquiries and investigations and demonstrations, he's still there.’
      • ‘There is wild talk of inquiries and commissions of investigations in the air.’
      • ‘The building in Sutton will be used for murder investigations and is due to open in January next year.’
      • ‘Until now the unit's investigations have not considered anyone else being involved.’
      • ‘That shortcoming led to the introduction of the Holmes system for major investigations.’
      • ‘An army spokesman would not comment, saying investigations were still going on.’
      • ‘Until such time as a report on these investigations comes to hand then I will suspend judgement.’
      • ‘Certainly the legal systems in some countries present obstacles to investigations.’
      • ‘They are also required to help Symantec in investigations into other counterfeiters.’
      • ‘Updates will follow if further products emerge from the on-going investigations.’
      • ‘Meanwhile, the sauna remains closed as investigations continue into how the fire broke out.’
      • ‘It will also enable local schools and community groups to become involved in the investigations.’
      • ‘One of the boys concerned has been temporarily excluded pending investigations by the school.’
      • ‘It seems that it has become a fashion to prescribe costly high tech investigations.’
      • ‘Dean says the theft of her laptop was one of a number of unusual events that took place during her investigations.’
      • ‘His investigations have just that effect, and the trawl of weird individuals is phenomenal.’
      • ‘These are the questions at the centre of the author's tactful, patient investigations.’
      • ‘Two other major investigations of Glasgow City Council employees are still to be carried out.’
      • ‘All I can indicate is that he is of interest to us and investigations are continuing.’



/inˌvestəˈɡāSH(ə)n/ /ɪnˌvɛstəˈɡeɪʃ(ə)n/


Late Middle English from Latin investigatio(n-), from the verb investigare (see investigate).