fossilization
  化石化,固定化,使陳腐
  Fos·sil·i·za·tion n.  The process of converting, or of being converted, into a fossil.
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  fossilization
       n 1: the process of fossilizing a plant or animal that existed in
            some earlier age; the process of being turned to stone
            [syn: fossilisation]
       2: becoming inflexible or out of date [syn: fossilisation]