Litmus and Turnsole
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Litmus
Litmus noun - 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.
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Turnsole and Litmus. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/litmus/turnsole
Litmus & Turnsole. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/litmus/turnsole>.
Turnsole or Litmus. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/litmus/turnsole.
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