View synonyms for litmus test

litmus test

noun

Chemistry. the use of litmus paper or solution to test the acidity or alkalinity of a solution.
a crucial and revealing test in which there is one decisive factor.

litmus test

First recorded in 1955–60; so called from chemical tests in which litmus or litmus paper is an indicator

Again, that pre-communion questionnaire sin litmus test might prove handy.

Applying an ideological litmus test for commencement speakers is not a good idea.

But when did they become the litmus test of competence in office?

Opposition to the Affordable Care Act in toto might linger as a litmus test for conservatives.

The right-wing base and media will make it a litmus test issue.

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