/ Dictionary / Index A Avesta: Meaning and Definition of Find definitions for: A•ves•ta Pronunciation: (u-ves'tu), [key] — n. a collection of sacred Zoroastrian writings, including the Gathas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: avesta (Thesaurus) Aves Avestan Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language