social security number
A 'social security number' is a nine-digit identifier issued by the U.S. government to track income and determine eligibility for benefits.
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Definition
B2United States
(official, government)A unique nine-digit identifier assigned to citizens, permanent residents, and certain non-citizens for tracking income and benefits.
Example
- You need a social security number to start working in the United States.
- Her social security number is required to file taxes.
B2United States
(official, government)A number used to administer various programs, including Social Security, Medicare, and taxation.
Example
- The social security number is essential for accessing government services.
- He used his social security number to apply for unemployment benefits.
Similar
Terms that have similar or relatively close meanings to "social security number":