vitriolate verb 3adjective 1noun 1forms 3 verb3 •To convert into a vitriol, to make into sulphuric acid or a sulphate. •To change into a vitriol, to become a sulphuric acid or a sulphate. •To expose to a vitriol. adjective1 •(no longer used) Synonym of vitriolic, of or related to vitriol, various metallic sulphates. noun1 •(no longer used) Synonym of sulfate, a salt or ester of sulphuric acid. formsvitriolated · vitriolating · vitriolates