Dicastery (from Greek δικαστήριον, law-court, from δικάστης, judge/juror)'s an Italicism sometimes used in English to refer to the Departments of the Roman Curia. Apart from the Secretariat of State (the Pope's secretariat), these Dicasteries or Departments are grouped in the following categories: Congregations, headed by a Prefect, who's most frequently a cardinal: The Congregation for the Doctrine of… (More on Dicastery)