Orthodoxy Sunday
noun
See under Feast of Orthodoxy.
Origin of Orthodoxy Sunday
First recorded in 1840–50
Definition for orthodoxy sunday (2 of 2)
Feast of Orthodoxy
noun Eastern Church.
a solemn festival held on the first Sunday of Lent (Orthodoxy Sunday) commemorating the restoration of the use of icons in the church (a.d. 842) and the triumph over all heresies.