/ Dictionary / Index S sodium pyroborate: Meaning and Definition of Find definitions for: so'dium pyrobo'rate Pronunciation: [key] — Chem. Chem. borax. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sodium pump sodium salicylate Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language