devitrify

/diːˈvɪtrɪfaɪ/
verb
  1. To change from a glassy or amorphous state into a crystalline form, often causing cloudiness or brittleness.
    • The artist avoided letting the glaze devitrify during firing.
    • If you heat the glass too slowly, it may devitrify and become opaque.
    • Some types of lava devitrify as they cool, forming tiny crystals.
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What does "devitrify" mean? | whatsthatwordmean | whatsthatwordmean