verb (used with or without object), vit·ri·fied, vit·ri·fy·ing.
Examples from the Web for vitrify
We cannot but suspect any medium under which the pigments will not vitrify.
Seventhly, That all kind of vitrify'd substances, by being suddenly cool'd, become very hard and brittle.Micrographia|Robert Hooke
This furnace must give a heat strong enough to vitrify lead, and therewith all the alloy which the perfect metals may contain.Elements of the Theory and Practice of Chymistry, 5th ed.|Pierre Joseph Macquer