/ Dictionary / Index R rial omani: Meaning and Definition of Find definitions for: rial' o•ma'ni Pronunciation: (ō-mä'nē), [key] a paper money, coin, and monetary unit of Oman, equal to 1000 baiza. Abbr.: RO. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rial rialto Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language