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2 definitions found
 for sulphurous
From The Collaborative International Dictionary of English v.0.48 :

  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
        (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
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

      adj 1: of or related to or containing sulfur or derived from
             sulfur [syn: sulfurous, sulphurous]
      2: 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,
      3: 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]

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