methylene blue

methylene blue
noun
a dark green dye used as a stain, an antiseptic, a chemical indicator, and an antidote in cyanide poisoning
• Hypernyms: ↑stain, ↑thiazine

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noun
Usage: sometimes capitalized M&B
: a basic dye of the thiazine class used as a biological stain, as an antidote especially in cyanide poisoning, as an oxidation-reduction indicator, and in a test for the bacterial content of milk — see dye table I (under Basic Blue 9)

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Chem., Pharm.
a dark-green, crystalline compound, C16H18ClN3S, that dissolves in water to form a deep-blue solution: used chiefly as a dye, as a bacteriological and biological stain, and as an antidote for cyanide poisoning. Also called methylthionine chloride.
[1885-90]

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methylene blue noun
A blue dye used to indicate pH value
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Main Entry: ↑methyl

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methylene blue,
a dark-green, crystalline compound used as a dye, as a stain in bacteriology, in medicine as an antidote for cyanide poisoning, and in the treatment of various diseases: »

The methylene blue test on a milk sample measures one type of bacterial activity (Science News).

 Formula: C16H18ClN3S•3H2O

Useful english dictionary. 2012.

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Look at other dictionaries:

  • Methylene blue — Methylene blue …   Wikipedia

  • Methylene blue — Methylene Meth yl*ene, n. [F. m[ e]thyl[ e]ne, from Gr. ? wine + ? wood; a word coined to correspond to the name wood spirit.] (Chem.) A divalent hydrocarbon radical, { CH2 }, not known in the free state, but regarded as an essential residue and… …   The Collaborative International Dictionary of English

  • methylene blue — n. a bluish green aniline dye, C16H18N3ClS·3H2O, used as a bacteriologic stain, an antidote in cyanide poisoning, etc …   English World dictionary

  • methylene blue — A basic dye easily oxidized to azure, with dye mixtures; used in histology and microbiology, to stain intestinal protozoa in wet mount preparations, to track RNA and RNase in electrophoresis, and as an antidote for methemoglobinemia; its …   Medical dictionary

  • methylene blue — Chem., Pharm. a dark green, crystalline compound, C16H18ClN3S, that dissolves in water to form a deep blue solution: used chiefly as a dye, as a bacteriological and biological stain, and as an antidote for cyanide poisoning. Also called… …   Universalium

  • Methylene Blue — (= Swiss blue; Basic Blue 9; tetramethythionine chloride) Water soluble dye that can be reduced to a colourless form and can be oxidized by atmospheric oxygen. Used as a stain in bacteriology and histology …   Dictionary of molecular biology

  • methylene blue — meth′ylene blue′ n. pha chem. a dark green, crystalline compound, C16H18ClN3that dissolves in water to form a deep blue solution: used chiefly as a dye, as a biological stain, and as an antidote for cyanide poisoning …   From formal English to slang

  • methylene blue — a blue dye used to stain bacterial cells for microscopic examination …   The new mediacal dictionary

  • methylene blue — noun Date: circa 1890 a basic thiazine dye C16H18ClN3S•3H2O used especially as a biological stain, an antidote in cyanide poisoning, and an oxidation reduction indicator …   New Collegiate Dictionary

  • methylene blue — a dye (3,7 bis (Dimethylamino) phenazathionioum chloride) used against external bacteria and protozoans on fish …   Dictionary of ichthyology

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