Alchemy

definition: 
the medieval forerunner of chemistry, based on the supposed transformation of matter. It was concerned particularly with attempts to convert base metals into gold or to find a universal elixir.
sentence: 
In the second decade of the twenty-first century, alchemy is not only about the transmutation of metals, but the shift in consciousness that returns us from the physical to the non-physical.
Throughout its history, alchemy has shown a dual nature. On the one hand, it has involved the use of chemical substances and so is claimed by the history of science as the precursor of modern chemistry.
difficulty: 
medium
toefl frequency: 
2
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