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

He was later welcomed to St George's Cathedral in Istanbul by the head of the Eastern Orthodox Church, Patriarch Bartholomew.

From BBC • Nov. 29, 2025

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

From The Wall Street Journal • Nov. 28, 2025

There were exchanges of gifts, including an icon given to Pope Leo, reflecting the King's fascination with the Orthodox Church and its images.

From BBC • Oct. 23, 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

Father Mike, her son-in-law and my very own uncle, was by this time back from his years in Greece and serving—in an assistant capacity—at Assumption Greek Orthodox Church.

From "Middlesex: A Novel" by Jeffrey Eugenides