To bring to or to be in a state of stable solidity or hardness. Said of plasters, clays, glazes, some plastics, and other substances. Sometimes the change occuring is a chemical one, as with gypsum plaster. With ceramic or glazed work, high enough temperatures must be reached that these materials vitrify.(pr. mə-CHəR or mə-TYəR)Also see maturing point.

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