a. and sb. [f. Zarathustra, the Old Iranian form of the name of the founder of the ancient Persian religion.] = ZOROASTRIAN. So Zarathustrianism, Zarathustric a., Zarathustrism.
1871. Tylor, Prim. Cult., I. ii. 49. Brahmanism, Zarathustrism, and Buddhism. Ibid., II. xv. 219. The Wicked Serpent of the Zarathustrians.
1886. Encycl. Brit., XX. 361/1. The Vedic and Zarathustric religions. Ibid., 370/1. Mazdaism (Zarathustrianism), with its sects.
1891. Cheyne, Orig. Psalter, viii. 401. The Bundahis is thoroughly Zarathustrian in spirit when it states [etc.].
