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touchstone
[ tuhch-stohn ]
/ ˈtʌtʃˌstoʊn /
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noun
a test or criterion for the qualities of a thing.
a black siliceous stone formerly used to test the purity of gold and silver by the color of the streak produced on it by rubbing it with either metal.
OTHER WORDS FOR touchstone
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Words nearby touchstone
touch plate, touch-ready, touch rugby, touchscreen, touch-sensitive, touchstone, touch system, touch-tackle, touch-tone, touch-type, touch-up
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How to use touchstone in a sentence
British Dictionary definitions for touchstone
touchstone
/ (ˈtʌtʃˌstəʊn) /
noun
a criterion or standard by which judgment is made
a hard dark siliceous stone, such as basalt or jasper, that is used to test the quality of gold and silver from the colour of the streak they produce on it
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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