[zawr-oh-as-tree-uh-niz-uh
m, zohr-] 
| 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. |
| Zo·ro·as·tri·an·ism (zôr'ō-ās'trē-ə-nĭz'əm) n. The religious system founded by Zoroaster and set forth in the Avesta, teaching the worship of Ahura Mazda in the context of a universal struggle between the forces of light and of darkness. Zo'ro·as'tri·an adj. & n. |