A prelate canonically elected and confirmed and exercising the duties of his office. There are three grades:

These last, called abbots nullius, have quasi-episcopal jurisdiction and the right to assist at ecumenical councils, with decisive vote. All regular abbots elected for life are obliged, after their ecclesiastical confirmation, to receive the blessing, at which they are invested with the miter, crosier, pectoral cross, ring, and other insignia of their office.