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A Mass celebrated for the dead. The name is derived from the firsrt word of the opening hymn in the Latin Rite Mass prior to the revision since the Second Vatican Council. The invocation said, "Requiem aeternam dona eis, Domine" (Eternal rest give unto them, O Lord). (Etym. Latin requies, rest after labor, relaxation.)
All items in this dictionary are from Fr. John Hardon's Modern Catholic Dictionary, © Eternal Life. Used with permission.