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Vitrification: The process by which silica is converted to glass by the action of heat and fluxes. A vitrified body is one in which some of the silica in the body has been converted from its crystalline to its glassy phase. If all of the silica in a body has been vitrified, it may slump in firing, and the finished pot will be very brittle.
|Jennifer Mathes, Ph.D.|