We don't have synonyms for sulphur trioxide yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sulphur dioxide and sulfur trioxide.
We don't have any synonyms for sulphur trioxide yet.
(n) :
(inorganic chemistry, British) Alternative spelling of sulfur trioxide. [(inorganic chemistry) A corrosive liquid, SO₃, which forms sulfuric acid on contact with water; made commercially by the oxidation of sulfur dioxide.]
(n) :
(inorganic chemistry, British) Alternative spelling of sulfur trioxide. [(inorganic chemistry) A corrosive liquid, SO₃, which forms sulfuric acid on contact with water; made commercially by the oxidation of sulfur dioxide.]