/ Dictionary / Index S SSB: Meaning and Definition of Find definitions for: SSB Pronunciation: [key] Social Security Board. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. SSAE SSBN Related Content Daily Word Quiz: wary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language