Christian feast days: Gennadius of Constantinople (Greek Orthodox Church)

Gennadius of Constantinople was the patriarch of Constantinople from August 458 until his death. Gennadius is known to have been a learned writer who followed the School of Antioch of literal exegesis, although few writings have been left about him. He is commemorated in the Eastern Orthodox Church on 17 November but is not listed in the Roman Martyrology.

Greek Orthodox Church is a term that can refer to any one of three classes of Christian churches, each associated in some way with Greek Christianity, Levantine Arabic-speaking Christians or more broadly the rite used in the Eastern Roman Empire:

• The broader meaning refers to "the entire body of Orthodox (Chalcedonian) Christianity, sometimes also called 'Eastern Orthodox', 'Greek Catholic', or generally 'the Greek Church'".
• A second, narrower meaning refers to "any of several independent churches within the worldwide communion of [Eastern] Orthodox Christianity that retain the use of the Greek language in formal ecclesiastical settings". In this sense, the Greek Orthodox Churches are the Ecumenical Patriarchate of Constantinople and its dependencies, the Patriarchates of Alexandria, Antioch and Jerusalem, the Church of Greece and the Church of Cyprus.
• The third meaning refers to the Church of Greece, an Eastern Orthodox Church operating within the modern borders of Greece.