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To heat to a high temperature without fusing, as to heat unformed ceramic materials in a kiln, or to heat ores, precipitates, concentrates, or residues so that hydrates, carbonates, or other compounds are decomposed and the volatile material is expelled.
To heat under oxidizing conditions.
Product of calcining or roasting.
To heat a substance below the temperature of fusion to drive off chemically combined water or to alter its chemical and physical characteristics.