Find accurate definitions of over 5,000 Catholic terms and phrases (including abbreviations). Based on Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.
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A popular devotion among Eastern Christians. The words of the prayer are "O Lord Jesus Christ, Son of God, have mercy on me, a sinner." It is said by devout Christians at regular intervals during the day and night, and is used by them as the basis of their meditation.