methylene blue


Definition of methylene blue

: a basic thiazine dye C16H18ClN3S·3H2O used especially as a biological stain, an antidote in cyanide poisoning, and an oxidation-reduction indicator

Examples of methylene blue in a Sentence

Recent Examples on the Web Dutch, American and Malian scientists working in Ouélessébougou, Mali, found that adding methylene blue to a typical treatment regimen cleared gametocytes from the bloodstream within two days. Donald G. Mcneil Jr., New York Times, "Promising Malaria Drug Has a Striking Drawback: Blue Urine," 9 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'methylene blue.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of methylene blue

1882, in the meaning defined above

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Time Traveler for methylene blue

The first known use of methylene blue was in 1882

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methylene blue


Medical Definition of methylene blue

: a basic thiazine dye C16H18ClN3S·3H2O used in the treatment of methemoglobinemia, as an antidote in cyanide poisoning, as a biological stain, and as an oxidation-reduction indicator

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