1. Adjective.  made of material produced by the high temperature firing of inorganic, nonmetallic rocks and minerals.
  2. Noun.  (uncountable) A hard brittle material that is produced through burning of nonmetallic minerals at high temperatures.
  3. Noun.  (countable) An object made of this material.

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This entry was last updated on RefTopia from its source on 3/20/2012.