Vitrify

Vit″ri‐fy (?), v. t. [imp. & p. p.Vitrified (?); p. pr. & vb. n.Vitrifying (?).] [F. vitrifier; L. vitrum glass + -ficare to make. See Vitreous, -fy.] To convert into, or cause to resemble, glass or a glassy substance, by heat and fusion.