/ Dictionary / Index R riverine: Meaning and Definition of Find definitions for: riv•er•ine Pronunciation: (riv'u-rīn", -rēn", -ur-in), [key] — adj. of or pertaining to a river. situated or dwelling beside a river. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. river horse river otter Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language