acid test

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English[edit]

Etymology[edit]

From the testing of gold with nitric acid (true gold is not affected)

Noun[edit]

acid test (plural acid tests)

  1. (figurative) A rigorous test or appraisal of the quality or worth of something.
    • 2020 May 20, Stefanie Foster, “Comment: Safety first: now more than ever”, in Rail, page 3:
      The acid test: will the British public abide by such stringent guidelines about where they should stand, walk or sit in our stations and on our trains, when they have been used to a turn-up-and-go railway where they enjoyed freedom having bought their ticket?
  2. (historical) In the 1960s, a party based around the use and advocacy of the psychedelic drug LSD ("acid").

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