Catholicos (plural Catholicoi) is a title given to the head bishop of an autonomous region under the Patriarchate of Antioch in the ancient Syrian church. A Catholicos in all respects is equivalent to a Patriarch in powers, but, in precedence, defers to the Patriarch of Antioch. The word 'Catholicos' is a transliteration of the Greek καθολικός, pl. καθολικοί , meaning concerning the whole, universal or general. There existed 4 Catholicoi in the ancient church: In the Eastern Catholic Churches not of Byzantine Rite, Catholicos is equivalent to a Major Archbishop.