RIAL Meaning of RIAL in English n.Variant: also ri · yalPronunciation: r ē - ' o ̇ l, - ' älFunction: noun Etymology: Persian, from Arabic riy ā l riyal Date: 1932― see MONEY table Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012