Definition of Touchstone

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Touchstone

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.

Any test or criterion by which the qualities of a thing are tried.

Related Definitions:

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Touchstone Quotations

The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as poetry.
Bertrand Russell

Prosperity is the measure or touchstone of virtue, for it is less difficult to bear misfortune than to remain uncorrupted by pleasure.
Tacitus

A renewed commitment to the freedom and opportunity of our people is the touchstone of our time. In this new century, where tests are many and challenges change with the shifting of the wind, we must hold fast to the principles that have made our nation the envy of the world.
Bill Owens

I think the touchstone is to give consumers a full, fair choice without the power of a monopoly operating system pushing them in a direction that free competition might or might not achieve.
Jim Barksdale

For every SF reader of that period, Robert A. Heinlein was also a touchstone.
Walter Jon Williams

The ultimate touchstone of constitutionality is the Constitution itself and not what we have said about it.
Felix Frankfurter

I think you can see that in the show. Music was my touchstone. Music is still much more important to me.
Bruce McCulloch

Touchstone Translations

touchstone in French is pierre de touche

Quotes