SSI

abbreviation

Definition of SSI

  1. supplemental security income


Law Dictionary

SSI

abbreviation

Legal Definition of SSI

  1. supplemental security income


Seen and Heard

What made you want to look up SSI? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to handle or deal with in a skillful way

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • m-ws-new-words-quiz
  • Which word means "inability to recognize faces"?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ