Correctness in doctrine and belief. / Conformity to established and accepted beliefs (usually of religions).

The Eastern Orthodox Church. / The aggregate of the definitive elements of the Eastern Orthodox Church, such as its faith, worship, theology, and traditions.

plural of orthodoxy

The faith, practices, etc. of the Eastern Orthodox Church.

An evangelical Christian movement in the late 20th and early 21st centuries that emphasizes the ancient Christian consensus of the undivided Church of the first millennium AD.

(Christianity, theology) A theological movement developed in the aftermath of World War I, largely a reaction against doctrines of 19th-century liberal theology and a reevaluation of the teachings of the Reformation.