The Churches of Orthodox tradition reserve it for the territories of the whole group of bishops who look to a particular metropolitan or patriarch, such as the Orthodox Patriarch of Antioch, or the Bishop of Constantinople, who is now known as the Oecumenical Patriarch. For the area presided over by a single bishop, they use a word which the West has redeployed for much smaller pastoral units served by a single priest: the parochia or parish. The West has another term equivalent to diocese, from a Latin word for a chair, sedes, which comes into English as ‘see’.
