English noun: litmus test | |||
1. | litmus test (substance) 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 | ||
Synonyms | litmus | ||
Broader (hypernym) | acid-base indicator | ||
Substance meronym | litmus paper | ||
2. | litmus test (communication) a test that relies on a single indicator | ||
Samples | Her litmus test for good breeding is whether you split infinitives. | ||
Broader (hypernym) | exam, examination, test | ||