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Prussian blue   /prˈəʃən blu/   Listen
adjective
Prussian  adj.  Of or pertaining to Prussia.
Prussian blue (Chem.), any one of several complex double cyanides of ferrous and ferric iron; specifically, a dark blue amorphous substance having a coppery luster, obtained by adding a solution of potassium ferrocyanide (yellow prussiate of potash) to a ferric salt. It is used in dyeing, in ink, etc. Called also Williamson's blue, insoluble Prussian blue, Berlin blue, etc.
Prussian carp (Zool.) See Gibel.
Prussian green. (Chem.) Same as Berlin green, under Berlin.


noun
Blue  n.  
1.
One of the seven colors into which the rays of light divide themselves, when refracted through a glass prism; the color of the clear sky, or a color resembling that, whether lighter or darker; a pigment having such color. Sometimes, poetically, The sky; as, to fly off into the blue.
2.
A pedantic woman; a bluestocking. (Colloq.)
3.
pl. Low spirits; a fit of despondency; melancholy. (Colloq.)
Berlin blue, Prussian blue.
Mineral blue. See under Mineral.
Prussian blue. See under Prussian.





Collaborative International Dictionary of English 0.48


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"Prussian blue" Quotes from Famous Books



... Prussian blue does not come from Prussia. It is the precipitate of the salt of protoxide of iron with red prussiate ...
— The Handy Cyclopedia of Things Worth Knowing - A Manual of Ready Reference • Joseph Triemens
... the one usually received; but too much reliance must not be placed on its accuracy, for the analysis of the several compounds is too difficult for the results to be fully admitted. The residue left in the retort speedily turns to one of the blues, identical with, or allied to, Prussian blue. This is at best a disagreeable process to conduct, for the hydrocyanic acid formed adheres so strongly to the glass, that, instead of being freely given off, bubbles are evolved suddenly with such ...
— American Handbook of the Daguerrotype • Samuel D. Humphrey
... His experiments on Prussian blue are most interesting, not only because of the enormous amount of work involved and the skill he displayed in his experiments, but because all the time the chemist was handling, smelling, and even ...
— A History of Science, Volume 4(of 5) • Henry Smith Williams
... phosphorus, and stir in a few spoonsful of fine whiting to bring to the proper thickness. This preparation should be kept hot by being suspended over a lamp, while dipping the wood or tapers. Colour the mixture by adding a little vermillion, lamp black or prussian blue; be careful not to ignite the ...
— Young's Demonstrative Translation of Scientific Secrets • Daniel Young


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