ceramic

Short definition from Wiktionary

Adjective

1. 1
   Made of material produced by the high-temperature firing of inorganic, nonmetallic rocks and minerals.

Noun

1. 1
   A hard, brittle, inorganic, nonmetallic material, usually made from a material, such as clay, then firing it at a high temperature.
2. 2
   An object made of this material.