- See under Feast of Orthodoxy.
Origin of Orthodoxy Sunday
First recorded in 1840–50
Feast of Orthodoxy
- 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.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018