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nouna coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator
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Definition that contains litmus
- base any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
- acid any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
- alkali any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
- roccella tinctoria a source of the dye archil and of litmus
- litmus paper unsized paper treated with litmus for use as an acid-base indicator
- pertusaria crustose lichens that are a source of the dye archil and of litmus
- roccella a source of the dye archil and of litmus
- genus pertusaria crustose lichens that are a source of the dye archil and of litmus