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Touchstone

(n.) Lydian stone; basanite; -- so called because used to test the purity of gold and silver by the streak which is left upon the stone when it is rubbed by the metal. See Basanite.


Touchstone - Other Definitions

  • (n.) Lydian stone; basanite; -- so called because used to test the purity of gold and silver by the streak which is left upon the stone when it is rubbed by the metal. See Basanite.

  • (n.) Any test or criterion by which the qualities of a thing are tried.

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