/ Dictionary / Index Z Zoroaster: Meaning and Definition of Find definitions for: Zo•ro•as•ter Pronunciation: (zôr'ō-as"tur, zōr'-, zôr"ō-as'tur, zōr"-), [key] — n. fl. 6th centuryb.c.,Persian religious teacher. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: zoroaster (Thesaurus) Zorn's lemma Zoroastrian Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language