Definition: Archdiocese - a region or jurisdiction controlled by one bishop; in some cases, it may include other bishops appointed by the pope. Definition: An ecclesiastical or religious organization or community governed by one bishop, which has jurisdiction over all or part of a diocese. Bishop's Diocese - the most common form, and is the largest and most populous diocese. It can be located within a province or an archdiocese. Catholicism - the Christian religion founded by Jesus Christ in the first century AD, which emphasizes devotion to God and a strict adherence to the Catholic Faith. Bishops are recognized as leaders of the church, serving with the permission of the Pope. The term 'archdiocesan' is derived from Latin and refers to an ecclesiastical region or jurisdiction controlled by one bishop.