Meaning of social security number | Babel Free

Definitions

1. Alternative letter-case form of social security number.
   alt-of
2. A nine-digit number issued by the Social Security Administration to citizens, permanent residents, and certain temporary workers, primarily to track people for taxation purposes, and in recent years serving as a de facto national identification number.
   US
3. A corresponding number in other countries.

Equivalents

CEFR level