1) Byzantine Church 2) Greek Orthodox Church 
Federation of national and regional self-governing Christian churches, mainly found in Eastern Europe and parts of Asia. The final schism between the Orthodox Church and the Roman Catholic Church...
See Eastern Orthodox.
[n] - derived from the Byzantine Church and adhering to Byzantine rites
Orthodox Catholic Church noun derived from the Byzantine Church and adhering to Byzantine rites
Click images to enlargeFederation of national and regional self-governing Christian churches, mainly found in Eastern Europe and parts of Asia. The final schism between the Orthodox Church and the Roman Catholic Church occurred in 1054. The centre of worship is the Eucharist. Clergy, other than the bishops, may marry,...
term referring to the historic Eastern Christian churches, including the Greek, Russian, Armenian and other traditions.
the Christian church comprising the local and national Eastern churches that are in communion with the ecumenical patriarch of Constantinople; Byzantine Church. · (originally) the Christian church of those countries formerly comprising the Eastern Roman Empire and of countries evangelized from it; Greek Orthodox Church.