duodecimal number system duodecimal notation • duodecimal system · · · Info · Definitions · Synonyms · Characters · · duodecimal number system · · Text Common · · Latin · · Scripts 24 · · Length 9 · · Syllables Definitions · · · (noun) a positional system of numeration that uses duodecimal digits and a radix of twelve. Synonyms: duodecimal number system, duodecimal system. · · Noun Definition 1 Synonyms · · · duodecimal system · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079