Definition from Wiktionary, the free dictionary
- A process of converting a material into a glass-like amorphous solid which is free of any crystalline structure, either by the quick removal or addition of heat, or by mixing with an additive.
1919, United States. Bureau of Standards, Technologic Papers of the Bureau of Standards, Washington, D.C.: United States Government Printing Office, page 15:
- At this point overfiring begins, as is shown particularly by the volume curve, which indicates decided bloating, so that at 1450°C the clay has about the same volume it had at 1050°C before vitrification took place.