Definition, Meaning & Synonyms

a litmus test

noun

/ˈlɪt.məs ˌtɛst/

Definition

A litmus test is a simple test used to get a quick indication of the acidity or alkalinity of a solution. In a broader context, it refers to any decisive test or criterion that reveals the worth or value of something.

Examples

The company’s decision to lower prices was a litmus test of how responsive it was to market demands.
In politics, a candidate’s stance on healthcare can serve as a litmus test for voters.
The experiment provided a litmus test for the new chemical formula.

Meaning

In everyday language, a litmus test can be used metaphorically to describe any situation where a clear and straightforward measure or decision is needed. It often implies that the outcome will clearly demonstrate the effectiveness or suitability of a person, idea, or product.