1. Mazdaism - Noun
2. Mazdaism - Proper noun
system of religion founded in Persia in the 6th century BC by Zoroaster; set forth in the Zend-Avesta; based on concept of struggle between light (good) and dark (evil)
Source: WordNetFor example, Mazdaism (Mazdean Zoroastrianism ) is both dualistic and monotheistic (but not monist by definition) since in that philosophy God—the Creator—is purely good, and the antithesis—which is also uncreated—is an absolute one. Source: Internet
Gherardo Gnoli, in The Encyclopaedia of Religion, says that "we can assert that Manichaeism has its roots in the Iranian religious tradition and that its relationship to Mazdaism, or Zoroastrianism, is more or less like that of Christianity to Judaism". Source: Internet