Vit·ri·o·late v. t. [imp. & p. p. Vitriolated p. pr. & vb. n. Vitriolating.] Old Chem. (a) To convert into, or change to, a vitriol; to make into sulphuric acid or a sulphate. (b) To subject to the action of, or impregnate with, vitriol.