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Vitriol, vit′ri-ol, n. the popular name of sulphuric acid: a soluble sulphate of a metal—green vitriol=sulphate of iron, blue vitriol=sulphate of copper, white vitriol=sulphate of zinc.—v.t.

The sulphate of zinc is commonly known by the name of white vitriol.

Violent bleeding at the nose may sometimes be prevented by applying lint dipped in vinegar, or a strong solution of white vitriol, with fomentations of the temples and forehead made of nitre dissolved in water.

When the inflammation begins to decline, white vitriol gr. vi. in an ounce of water is more efficacious to moisten the eye than solutions of lead.

Soon after he perceived himself ill, one scruple of white vitriol was given him, and repeated two or three times, with which he vomited plentifully.