- The Oxford English Dictionary
The seven suburbicarian dioceses are Roman Catholic dioceses located in the suburbs that surround Rome, reserved for the highest order of Cardinals. A Cardinal Bishop is named titular bishop of each of the sees, which have varied slightly in history but are now Velletri-Segni, Porto-Santa Rufina, Frascati, Palestrina, Albano, Sabina-Poggio Mirteto, and Ostia; the see of Ostia is conferred on the Dean of the College of Cardinals in addition to his other see; the Dean is chosen by and from the six cardinal bishops of the suburbicarian dioceses, with the approval of the pope (formerly the dean was always the longest-serving cardinal bishop). However, since the 1960s, six of the dioceses have had their own substantive bishop, pursuant to a decree of Pope John XXIII titled Suburbicarii Sedis, with the exception of Ostia which was merged with the diocese of Rome and is administered by Rome's Cardinal Vicar General.
The titular bishops still formally "take possession" of the dioceses but the substantive bishops exercise all ordinary jurisdiction.
List of Cardinal-Bishops of Ostia
Cardinal-Bishops of Velletri-Segni
Cardinal-Bishops of Porto-Santa Rufina
Cardinal-Bishops of Frascatidetails Bishop of Frascati
Cardinal-Bishops of Palestrinadetails Bishop of Palestrina
Cardinal-Bishops of Albanodetails Bishop of Albano
Cardinal-Bishops of Sabina-Poggio Mirtetodetails Bishop of Sabina
suburbicarian in German: Suburbikarisches Bistum
suburbicarian in Spanish: Diócesis suburbicaria
suburbicarian in Italian: Diocesi suburbicaria
suburbicarian in Portuguese: Igreja suburbicária
suburbicarian in Russian: Субурбикарные епархии
suburbicarian in Swedish: Suburbikariska stift