litmus test
English Thesaurus
1. a test that relies on a single indicator (noun.communication)
| hypernym | : | exam, examination, test, |
| definition | : | a set of questions or exercises evaluating skill or knowledge (noun.communication) |
2. 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 (noun.substance)
| hypernym | : | acid-base indicator, |
| definition | : | an indicator that changes color on going from acidic to basic solutions (noun.substance) |
| substance meronym | : | litmus paper, |
| definition | : | unsized paper treated with litmus for use as an acid-base indicator (noun.substance) |
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