philosopher's stone

Definition of Philosopher's Stone in English :

1. elixir, philosopher's stone, philosophers' stone

hypothetical substance that the alchemists believed to be capable of changing base metals into gold

WordNet Lexical Database for English. Princeton University. 2010.

Philosopher's Stone

noun

a stone or substance thought by alchemists to be capable of transmuting base metals into gold

an imaginary substance sought for by alchemists in the belief that it would change base metals into gold or silver

n.

A substance that was believed to have the power of transmuting base metal into gold. Also called elixir.