About The Word Litmus

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Litmus

Litmus Meaning & Definition
Litmus Definition And Meaning

What's The Definition Of Litmus?

[n] 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 | Synonyms for Litmus: litmus test

Related Terms | Find terms related to Litmus:

See Also | acid-base indicator | litmus paper

Litmus In Webster's Dictionary

\Lit"mus\, n. [D. lakmoes; lak lacker + moes a thick preparation of fruit, pap, prob. akin to E. meat: cf. G. lackmus. See {Lac} a resinous substance.] (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.

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