vitrifying

/V IH1 T R AH0 F AY0 IH0 NG/
verb
  1. 1

    To convert into, or cause to resemble, glass or a glassy substance, by heat and fusion.

  2. 2

    To be converted into glass, especially through heat.

Synonyms

Source: https://en.wiktionary.org/wiki/vitrify, https://en.wiktionary.org/wiki/vitrifying