/ Dictionary / Index S sulphurous: Meaning and Definition of Find definitions for: sul•phur•ous Pronunciation: (sul'fur-us, sul-fyoor'us), [key] — adj. sulfurous (defs. 1, 2). pertaining to the fires of hell; hellish or satanic. fiery or heated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sulphurous (Thesaurus) sulphurise Sulphur Springs Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language