/ Dictionary / Index B benzenesulfonic acid: Meaning and Definition of Find definitions for: ben'zene•sul•fon'ic ac'id Pronunciation: (ben'zēn-sul-fon'ik, ben-zēn'-), [key] — Chem. Chem. a fine, needlelike substance, CHSO, used chiefly as a catalyst and in the synthesis of phenol, resorcinol, and other organic products. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. benzene series benzenoid Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language