al·che·mist /ˈælkəmɪst/
  煉金術士
  al·che·mist /-məst/ 名詞
  煉丹家,煉丹術士
  Al·che·mist n.  One who practices alchemy.
     You are alchemist; make gold.   --Shak.
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  alchemist
       n : one who was versed in the practice of alchemy and who sought
           an elixir of life and a panacea and an alkahest and the
           philosopher's stone