Definition of Catholicos in English:


nounPlural Catholicoses, Plural Catholicoi

  • The Patriarch of the Armenian or the Nestorian Church.

    • ‘The Armenian Apostolic Church has two catholicosate sees: the Catholicos of All Armenians at Etchmiadzin, Armenia, and Cilicia, in Antelias, Lebanon.’
    • ‘Georgian law grants the Catholicos the same power as that of a king, and the clergy actively participates in state affairs.’
    • ‘Trdates III appointed Gregory the Church's first Catholicos in 303, and the Cathedral he erected in continues today as the seat of the supreme Catholicos of the worldwide Armenian Apostolic Church.’
    • ‘The new church will be consecrated by the Catholicos of the East and Malankara Metropolitan on November 26 at 6.30 p.m.’


Early 17th century: from medieval Greek katholikos ‘universal’ (see Catholic).