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Definition of litmus test noun from the Oxford Advanced Learner's Dictionary

litmus test

noun
 
/ˈlɪtməs test/
 
/ˈlɪtməs test/
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  1. (also acid test)
    a way of deciding whether something is successful or true
    • The outcome will be seen as a litmus test of government concern for conservation issues.
  2. a test using litmus
See litmus test in the Oxford Advanced American Dictionary

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