Sulfurous
adjective
1.
of, relating to, or containing sulfur, especially in the tetravalent state.
2.
of the yellow color of sulfur.
3.
sulphurous (defs 2, 3).
sulfurous sul·fur·ous (sŭl’fər-əs, -fyər-, sŭl-fyur’əs)
adj.
Of, relating to, derived from, or containing sulfur, especially with valence 4.
Characteristic of or emanating from burning sulfur.
sulfurous
  (sŭl’fər-əs, sŭl-fyr’əs)   
Containing sulfur, especially sulfur with a valence of 4 or 3. Compare sulfuric.
Characteristic of or emanating from burning sulfur.
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