combined dna index system combined • combined operation · · · Info · Definitions · Characters · · combined dna index system · · Text Common · · Latin · · Scripts 25 · · Length 7 · · Syllables Definitions · · · (noun) the DNA file maintained by the Federal Bureau of Investigation. Synonyms: Combined DNA Index System. · · Noun Definition 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 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 x latin small letter x U+0078 y latin small letter y U+0079