 litmus |
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| 1. | [ noun ] (chemistry,color) 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_test | |
| Related terms: | acid-base_indicator coloring_material litmus_paper litmus_paper | |
| 2. | [ noun ] (chemistry) absorbent paper full of litmus; it is turned red by acids and blue by alkalis | |
| Synonyms: | litmus_paper | |
| Related terms: | paper test_paper | |
