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Social Security number noun /ˌsəʊʃl sɪˈkjʊərəti nʌmbə(r)/ /ˌsəʊʃl sɪˈkjʊrəti nʌmbər/ (abbreviation SSN) jump to other results - (in the US) an official identity number that everyone is given when they are born
CultureThe SSN was originally a qualification for work and social security, but in 1987 the US government decided that children should also be given numbers. The number is now also used in other ways, for example, on cheques and driving licenses and as a student's number at college or university.
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Social Security number
noun