Orthodox Church

American  

noun

1. the Christian church comprising the local and national Eastern churches that are in communion with the ecumenical patriarch of Constantinople; Byzantine Church.

2. (originally) the Christian church of those countries formerly comprising the Eastern Roman Empire and of countries evangelized from it; Greek Orthodox Church.

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Orthodox Church British  

noun

1. Also called: Byzantine Church.   Eastern Orthodox Church.   Greek Orthodox Church.  the collective body of those Eastern Churches that were separated from the western Church in the 11th century and are in communion with the Greek patriarch of Constantinople

2. any of these Churches

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Example Sentences

There was a hymn sung in Greek by the Coptic Orthodox Diocesan Choir and a carol by the choir of the Syriac Orthodox Church.

From BBC • Dec. 10, 2025

He singled out the diminishing influence of the Russian-backed Orthodox Church in Ukraine.

From The Wall Street Journal • Nov. 28, 2025

Labib had to host a church service as Father of St. George Coptic Orthodox Church in Bellflower, so after driving the boys to their morning matches, he planned for Sabet’s family to drive them home.

From Los Angeles Times • Aug. 29, 2025

He says he was initially scared to enter his local Russian Orthodox Church as he "looks different, covered in tattoos", but tells me he was welcomed with open arms.

From BBC • May 24, 2025

As far as I could tell, what happened every Sunday at Assumption Greek Orthodox Church was that the priests got together and read the Bible out loud.

From "Middlesex: A Novel" by Jeffrey Eugenides