Definition of litmus test Litmus test

We found 4 definitions of litmus test from 2 different sources.

What does litmus test mean?

Noun
litmus test - a test that relies on a single indicator; "her litmus test for good breeding is whether you split infinitives"
litmus test - a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator
		litmus
		acid-base indicator an indicator that changes color on going from acidic to basic solutions

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litmus test (Noun)
A simple test for the acidity or alkalinity of a substance, using litmus paper .
litmus test (Noun)
Any test which produces a decisive result by measuring a single indicator.