/ Dictionary / Index Z Zarathustra: Meaning and Definition of Find definitions for: Zar•a•thus•tra Pronunciation: (zar"u-th'stru), [key] — n. Zoroaster. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: zarathustra (Thesaurus) Zaragoza zaratite Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language