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.
Originally a spirit between the gods and men. In the New Testament a demon is the same as an evil spirit, which may be translated as "devil." It consequently means a malevolent, invisible being, which the pre-Christian word "demon" did not imply. (Etym. Latin daemon, evil spirit; Greek daim_n, a god, genius, spirit.)