/ Dictionary / Index H Hippo Regius: Meaning and Definition of Find definitions for: Hip•po Re•gi•us Pronunciation: (hip'ō rē'jē-us), [key] a seaport of ancient Numidia: St. Augustine was bishop here a.d. 395–430; the site of modern Annaba, in Algeria. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hippopotamus Hippo Zarytus Related Content Daily Word Quiz: voracious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language