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Elementary Dictionary
       

in·ves·ti·ga·tion

investigation

 
 
pronunciation:
ihn ve stih geI shn
part of speech: noun
definition: An investigation is a thorough way of trying to find out answers to something. When police do an investigation, they ask people questions, they look at many things, and they do a lot of checking in order to get facts. Scientists often carry out investigations too.
The police are doing an investigation into the cause of the car accident last night.
synonyms:
probe
similar words:
examination, exploration, research, search, study