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. [ 1913 Webster ]
v. t. To become glass; to be converted into glass. [ 1913 Webster ]
Chymists make vessels of animal substances, calcined, which will not vitrify in the fire. Arbuthnot. [ 1913 Webster ]