/ Dictionary / Index B benzene series: Meaning and Definition of Find definitions for: ben'zene se"ries Pronunciation: [key] — Chem. Chem. a series of aromatic hydrocarbons derived from benzene by replacing one or more of the hydrogen atoms with one or more methyl groups. The first three members are benzene, toluene, and xylene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. benzene ring benzenesulfonic acid 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