/ Dictionary / Index S Social Security Administration: Meaning and Definition of Find definitions for: So'cial Secu'rity Administra"tion Pronunciation: [key] — U.S. Govt. U.S. Govt. a division of the Department of Health and Human Services, created in 1946, that administers federal Social Security programs. Abbr.: SSA Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Social Security Act social service Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language