(Latin: completorium, complement) The concluding hour of the Divine Office. Its institution in the West is generally ascribed to Saint Benedict of Nursia. Originally it was recited after the evening meal or before retiring; it now follows immediately after Vespers. It includes a short lesson, the Pater Noster, Confiteor, three psalms, little chapter, respond, invariable hymn, and the Canticle of Simeon with its antiphon and collect.
This dictionary contains not only definitions and explanations of every subject in Religion, Scripture, tradition, doctrine, morals, sacraments, rites, customs, devotions and symbolism, but also accounts of the Church in every continent, country, diocese; missions, notable Catholic centers, cities, and places with religious names; religious orders, church societies, sects and false religions. It has brief articles also on historical events and personages, on the Old Testament and New, and on popes, prelates, priests, men and women of distinction, showing what the Church has done for civilization and correcting many errors which have hitherto passed for history.Wikipedia
Read More