'Sulphurous' definitions:

Definition of 'sulphurous'

(from WordNet)
adjective
Of or related to or containing sulfur or derived from sulfur [syn: sulfurous, sulphurous]
adjective
Harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"; "a vitriolic critique" [syn: acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic]
adjective
Characterized by oppressive heat and humidity; "the summer was sultry and oppressive"; "the stifling atmosphere"; "the sulfurous atmosphere preceding a thunderstorm" [syn: sultry, stifling, sulfurous, sulphurous]

Definition of 'Sulphurous'

From: GCIDE
  • Sulphurous \Sul"phur*ous\, a. [L. sulphurosus, sulfurosus: cf. F. sulfureux.]
  • 1. Of or pertaining to sulphur. [1913 Webster]
  • 2. (Chem.) (a) Derived from, or containing, sulphur; specifically, designating those compounds in which the element has a lower valence as contrasted with the sulphuric compounds. (b) Having the characteristic odor of sulphur dioxide, or of hydrogen sulphide, or of other sulphur compounds. [1913 Webster]
  • Sulphurous acid. (a) Sulphur dioxide. See under Sulphur. [Obs.] (b) An acid, H2SO3, not known in the free state except as a solution of sulphur dioxide in water, but forming a well-known series of salts (the sulphites).
  • Sulphurous anhydride (Chem.), sulphur dioxide. See under Sulphur. [1913 Webster]