reis reirrigation • reisolation · · · Info · Definitions · Synonyms · Characters · · reis · · Text Latin · · Script 4 · · Length Definitions · · · (noun) any rational or irrational number. Synonyms: real number, real. · · Noun Definition 1 (noun) the basic unit of money in Brazil; equal to 100 centavos. Synonyms: real. · · Noun Definition 2 (noun) an old small silver Spanish coin. Synonyms: real. · · Noun Definition 3 Synonyms · · · real number · · Synonym 1 real · · Synonym 2 Characters · · e latin small letter e U+0065 i latin small letter i U+0069 r latin small letter r U+0072 s latin small letter s U+0073