1. Of, relating to, or containing sulfur especially with a lower valence than sulfuric compounds; resembling or emanating from sulfur and especially burning sulfur
2. Of, relating to, or dealing with the fire of hell; infernal; scathing, virulent; profane, blasphemous

ETYM Latin sulphurosus, sulfurosus: cf. French sulfureux.
1. Of or pertaining to sulphur.
2. Derived from, or containing, sulphur.