ka·o·lin /ˈkeələn/
  高嶺土;陶土
  ka·olin /ˈkeələn/ 名詞
  Ka·o·lin, Ka·o·line  n.  Min. A very pure white clay, ordinarily in the form of an impalpable powder, and used to form the paste of porcelain; China clay; porcelain clay. It is chiefly derived from the decomposition of common feldspar.
  Note: ☞ The name is now applied to all porcelain clays which endure the fire without discoloration.
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  kaolin
       n : a fine usually white clay formed by the weathering of
           aluminous minerals (as feldspar); used in ceramics and as
           an absorbent and as a filler (e.g., in paper) [syn: china
           clay, china stone, kaoline, porcelain clay, terra
           alba]