Zoroastrianism

noun

1. an Iranian religion, founded c600 b.c. by Zoroaster, the principal beliefs of which are in the existence of a supreme deity, Ahura Mazda, and in a cosmic struggle between a spirit of good, Spenta Mainyu, and a spirit of evil, Angra Mainyu.

noun

1. the dualistic religion founded by the Persian prophet Zoroaster in the late 7th or early 6th centuries bc and set forth in the sacred writings of the Zend-Avesta. It is based on the concept of a continuous struggle between Ormazd (or Ahura Mazda), the god of creation, light, and goodness, and his arch enemy, Ahriman, the spirit of evil and darkness, and it includes a highly developed ethical codeAlso called: Mazdaism