Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A type of clay that is able to withstand intense heat, used to make firebricks, crucibles, and other objects that are exposed to high temperatures.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a type of clay that is able to withstand intense heat; used to make firebricks, crucibles, and other ceramics

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  • In glassmaking, this is clay that can be subjected to a high temperature without fusing, and which is therefore used for making crucibles in which glass batches are melted. Fire clay is rich in silica, but contains only small amounts of lime, iron, and alkali.

    November 9, 2007