Devitrification :: Devitrification (n.) The act or process of devitrifying, or the state of being devitrified. Specifically, the conversion of molten glassy matter into a stony mass by slow cooling, the result being the formation of crystallites, microbites, etc., in the glassy base, which are then called devitrification products..
Invitrifiable :: Invitrifiable (a.) Not admitting of being vitrified, or converted into glass..
Semivitrification :: Semivitrification (n.) The quality or state of being semivitrified.