In·ves·ti·ga·tion n. The act of investigating; the process of inquiring into or following up; research; study; inquiry, esp. patient or thorough inquiry or examination; as, the investigations of the philosopher and the mathematician; the investigations of the judge, the moralist.
n 1: an inquiry into unfamiliar or questionable activities;
"there was a congressional probe into the scandal" [syn:
2: the work of inquiring into something thoroughly and
systematically [syn: investigating]