Catholic Dictionary

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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IMMOVABLE MOVER

God as the ultimate cause of all motion or change in the universe, himself remaining unchanged. The term used by Aristotle and later by St. Thomas Aquinas, i.e., motor immobile, where motor means the one who changes, and immobile is unchangeable.