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A touchstone is a small tablet of dark stone such as fieldstone, slate, or lydite, used for assaying precious metal alloys. It has a finely grained surface on which soft metals leave a visible trace.
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The meaning of TOUCHSTONE is a fundamental or quintessential part or feature : basis. How to use touchstone in a sentence. Did you know? Synonym Discussion of Touchstone.
A touchstone is a small tablet of dark stone such as slate or lydite, used for assaying precious metal alloys. It has a finely grained surface on which soft metals leave a visible trace. [1] History. The touchstone was used during the Harappa period of the Indus Valley civilization ca. 2600–1900 BC for testing the purity of soft metals. [2] .
A standard, criterion, or reference point used to evaluate or judge the quality, authenticity, or truthfulness of something. "The scientific method serves as a touchstone for validating experimental results." Detailed meaning of touchstone.
Use the noun touchstone to describe a basis for comparison. For example, a filmmaker's touchstone might be her all-time favorite movie; she wants her movie to be that good or similar to it in some way. Touchstone as it is defined today comes from an actual stone.
A touchstone, as used in casual conversation, can mean two things: A way to measure the quality of something, as in “His athletic success became a touchstone for future athletes at the school” An essential part of something, as in “Nirvana was a touchstone of the grunge music scene in the 1990s”
