social security number
Word Rarity
Uncommon
Frequency: Zipf frequency 4.90 in modern English
31
Scrabble Score
20
Letters
6
Syllables
14
Unique Chars
Meaning
noun
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.
American usage
noun
A corresponding number in other countries.
noun
Alternative letter-case form of social security number.
Usage
- American usage