Definitions for "Diocesan Priest"
commits himself to a particular Diocese and its people. In this, he joins in the ministry of the bishop within that Diocese. This ordained ministry includes celebrating the Sacraments, proclaiming God's Word and being a pastor (servant-leader) for a community. Normally this service takes place within a parish, though some are involved in a variety of other ministries (chaplains, teachers, missions, etc.).
an ordained man who lives and ministers in a geographic area which is called a diocese, under the leadership and authority of the bishop of the diocese to which he belongs
an ordinary man called to an extraordinary ministry