/ Dictionary / Index R riel: Meaning and Definition of Find definitions for: riel Pronunciation: (rēl, rē-el'), [key] a paper money and monetary unit of Cambodia, equal to 100 sen. Ri•el Pronunciation: (rē-el'), [key] 1844–85, Canadian revolutionary. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: riel (Thesaurus) Rieka Riemann Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language