An archdiocese is the area under the jurisdiction of an archbishop. For example the Archdiocese of Boston is the city and surrounding area that is headed by the Archbishop of Boston. A smaller archdiocese is sometimes called an archbishopric. Likewise a diocese is the area under the jurisdiction of a bishop, and a patriarchate is the area under the jurisdiction of a patriarch, such as the Patriarch of Jerusalem, and so on.
abbreviate archdiocese
The Archdiocese of Melbourne started in 1847
Archdiocese of Uppsala was created in 10##.
Archdiocese of Trier was created in 898.
Archdiocese of Trier ended in 1801.
Archdiocese of Esztergom was created in 1000.
Archdiocese of Genova-Bobbio was created in 1986.
Roman Catholic Archdiocese of Abuja was created in 1981.
The population of Roman Catholic Archdiocese of Philadelphia is 3,982,194.
The Bishop of the Archdiocese of Chicago is Cardinal Francis George.
That is the correct spelling of the term "archdiocese" (a church region headed by an archbishop).
Greek Orthodox Archdiocese of America was created in 1921.