philosopher's stone(redirected from philosophers' stone)
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philosopher's stone:see alchemyalchemy
, ancient art of obscure origin that sought to transform base metals (e.g., lead) into silver and gold; forerunner of the science of chemistry. Some scholars hold that it was first practiced in early Egypt and others that it arose in China (in the 5th or 3d cent. B.C.
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substance supposed to convert base metal to gold. [Medieval Legend: Brewer Dictionary, 829]