Tewahedo ( Geʽez: ተዋሕዶ) is a Geʽez word meaning 'united as one'. The Ethiopian Orthodox Tewahedo Church had been administratively part of the Coptic Orthodox Church of Alexandria from the first half of the 4th century until 1959, when it was granted autocephaly with its own patriarch by Pope Cyril VI of Alexandria, Pope of the Coptic Orthodox Church.
The Ethiopian Orthodox Tewahedo Church is in communion with the other Oriental Orthodox churches (the Eritrean Orthodox Tewahedo Church, the Coptic Orthodox Church of Alexandria, the Malankara Orthodox Syrian Church, the Armenian Apostolic Church, and the Syriac Orthodox Church). It is a founding member of the World Council of Churches.
One of the few Christian churches in sub-Saharan Africa originating before European colonization of the continent, the Ethiopian Orthodox Tewahedo Church dates back to the acceptance of Christianity by the Kingdom of Aksum in 330, and has between 36 million and 49.8 million adherents in Ethiopia. The Ethiopian Orthodox Tewahedo Church ( Amharic: የኢትዮጵያ ኦርቶዶክስ ተዋሕዶ ቤተ ክርስቲያን, Yäityop'ya ortodoks täwahedo bétäkrestyan) is the largest of the Oriental Orthodox Churches.
