Acid Test Definition

noun
A decisive or critical test, as of worth or quality.
American Heritage
A crucial, final test that proves the value or quality of something.
Webster's New World

(idiomatic) A rigorous test or appraisal of the quality or worth of something.

Wiktionary
Synonyms:

Other Word Forms of Acid Test

Noun

Singular:
acid test
Plural:
acid-tests

Origin of Acid Test

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

    From Wiktionary

  • From the testing of gold in nitric acid

    From American Heritage Dictionary of the English Language, 5th Edition

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