NOTE: often implies an inquiry into possible criminal behavior of an individual
NOTE: Sense 1 is a specialized, narrow sense of Sense 2
NOTE: implies a legal proceeding
He is under investigation for possible money laundering activities.
There is certain to be a full investigation by the FAA following this near mid-air collision.
There was never a police investigation of the curious events surrounding the man's death.
WordNet 3.0 Sense Numbers: 1
NOTE: does not imply inquiry into alleged criminal or negligent behavior
NOTE: implies a general intellectual pursuit of a topic.
NOTE: does -not- imply a legal proceeding
Her thesis topic is an investigation of possible effects of increased carbon dioxide in the ocean.
Wittgenstein's later work was an investigation of deep philosophical issues related to language
My investigation of the backyard revealed that raccoons had been digging for grubs in the garden.
WordNet 3.0 Sense Numbers: 2