/ Dictionary / Index A Arion: Meaning and Definition of Find definitions for: A•ri•on Pronunciation: (u-rī'un), [key] — n. fl. 7th century b.c., Greek poet: inventor of the dithyramb. a winged horse often believed to be the offspring of Poseidon and Demeter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ariminum ariose Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language