/ Dictionary / Index P Pontus Euxinus: Meaning and Definition of Find definitions for: Pon'tus Eux•i'nus Pronunciation: (yk-sī'nus), [key] ancient name of the Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pontus pony Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language