- Zoroastrian⇄adj. of or having to do with Zoroaster, a Persian religious teacher who lived about 600 B.C., or the religion founded by him.
- Zoroastrian⇄noun a person believing in the teachings of Zoroaster, now represented by the Ghebers and the Parsis. Also, Zarathustrian.
- Zoroastrian⇄Zoroastrian, adjective, noun.