duodecimal duodecillion • duodecimality · · · Info · Definitions · Synonyms · Characters · · duodecimal · · Text Latin · · Script 10 · · Length Definitions · · · (noun) one part in twelve equal parts. Synonyms: one-twelfth, twelfth, twelfth part. · · Noun Definition 1 (adj) based on twelve. Example: "The duodecimal number system." · · Adjective Definition 1 Synonyms · · · one-twelfth · · Synonym 1 twelfth · · Synonym 2 twelfth part · · Synonym 3 Characters · · a latin small letter a U+0061 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 o latin small letter o U+006F u latin small letter u U+0075