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Litmus   Listen
noun
Litmus  n.  (Chem.) A dyestuff extracted from certain lichens (Roccella tinctoria, Lecanora tartarea, etc.), as a blue amorphous mass which consists of a compound of the alkaline carbonates with certain coloring matters related to orcin and orcein. Note: Litmus is used as a dye, and being turned red by acids and restored to its blue color by alkalies, is a common indicator or test for acidity and alkalinity.
Litmus paper (Chem.), unsized paper saturated with blue or red litmus, used in testing for acids or alkalies.






Collaborative International Dictionary of English 0.48








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"Litmus" Quotes from Famous Books



... hearers was to suffer the advanced stage of this dread disease within six months. Atkinson inclined to Almroth Wright's theory that scurvy is due to an acid intoxication of the blood caused by bacteria. He described the litmus-paper test which was practised on us monthly, and before and after sledge journeys. In this the blood of each individual is drawn and various strengths of dilute sulphuric acid are added to it until it ...
— The Worst Journey in the World, Volumes 1 and 2 - Antarctic 1910-1913 • Apsley Cherry-Garrard

... darkness. Now and again the student would take a glass rod, dip it for an instant into the boiling liquid, and, lifting it, would allow the liquid drop by drop to fall from the rod on to a strip of litmus paper. What he saw was evidently satisfactory, and presently he turned out the Bunsen lamp, walked to the window and opened it, and switched on an electric fan to aid the ...
— The Man Who Knew • Edgar Wallace



Words linked to "Litmus" :   acid-base indicator



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