/ Dictionary / Index S SBN: Meaning and Definition of Find definitions for: SBN Pronunciation: [key] Standard Book Number. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. 'sblood SbW Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language