SSN

American

abbreviation

Social Security number.

SSN British

abbreviation

severely subnormal; used of a person of very limited intelligence who needs special schooling

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It backtracked on creating a nationalized database, removed the requirements of principal address and physical SSN card, and updated the law to include mobile driver’s licenses that can be displayed digitally on cell phones.

From Salon • Feb. 12, 2026

But your passwords and SSN are your own to keep.

From MarketWatch • Dec. 31, 2025

Why it's important: Your SSN is a master key to your financial life.

From Salon • Aug. 27, 2024

All verification requests for which the name, date of birth and last four digits of an SSN match with at least one SSA record are recorded by the agency under a “total matches” category.

From Seattle Times • Apr. 5, 2024

Your SSN is part of your credit history, employment record and even criminal background profile.

From Encyclopedia.com • Dec. 3, 2018

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023