Federal Bureau of Investigation
Syllabification: (Fed·er·al Bu·reau of In·ves·ti·ga·tion)
(abbreviation: FBI)
Definition of Federal Bureau of Investigation
- an agency of the US federal government that deals principally with internal security and counter-intelligence and that also conducts investigations in federal law enforcement. It was established in 1908 as a branch of the Department of Justice, but was substantially reorganized under the controversial directorship (1924–72) of J. Edgar Hoover.