What is an imaginary liquor capable of transmuting metals into gold; also, one for producing life indefinitely; as, elixir vitæ, or the elixir of life called?

elixir — (Alchemy) An imaginary liquor capable of transmuting metals into gold; also, one for producing life indefinitely; as, elixir vitæ, or the elixir of life. (Webster's 1913.)

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