anamorphism
  漸變; 合成變質
  An·a·mor·phism n.
  1. A distorted image.
  2. Biol. A gradual progression from one type to another, generally ascending.
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  anamorphism
       n 1: the evolution of one type of organism from another by a long
            series of gradual changes [syn: anamorphosis]
       2: metamorphism that occurs deep under the earth's surface;
          changes simple minerals into complex minerals [ant: katamorphism]
       3: a distorted projection or perspective; especially an image
          distorted in such a way that it becomes visible only when
          viewed in a special manner [syn: anamorphosis]