Catholic Encyclopedia (1913)/Ahriman and Ormuzd
Ahriman and Ormuzd (more correctly Ormuzd and Ahriman), the modern Persian forms of Anro Mainyus and Ahura Mazda, the Evil Spirit and the Good Spirit, respectively, of the Avestic or Zoroastrian religion of the Ancient Iranians and modern Parsees. (See Avesta.)