/ Dictionary / Index B beta-naphthol: Meaning and Definition of Find definitions for: be•ta-naph•thol Pronunciation: (bā"tu-naf'thôl, -thol, -nap'- or, esp. Brit., bē"-), [key] — n. Chem. naphthol (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: beta-naphthol (Thesaurus) betamethyl acrolein beta-naphthylamine Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language