social security number social security administration • social service · · · Info · Definitions · Characters · · social security number · · Text Common · · Latin · · Scripts 22 · · Length 8 · · Syllables Definitions · · · (noun) the number of a particular individual's Social Security account. Synonyms: Social Security number. · · 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 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