de·vit·ri·fy
(ˌ)dē-ˈvi-trə-ˌfī
devitrified; devitrifying; devitrifies
: to deprive of glassy luster and transparency
especially
: to change (something, such as a glass, glassy rock, or enamel) from a vitreous to a crystalline condition
: the action or process of devitrifying or state of being devitrified
specifically
: the conversion of glassy matter into crystalline (as by slow cooling or by pressure, action of water, or chemical changes)
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Merriam-Webster unabridged



