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 Prus·sian blue /ˈprʌʃən-/

 Prus·sian blue /ˈprəʃənˈblu/ 名詞

 Prus·sian a.  Of or pertaining to Prussia. -- n. A native or inhabitant of 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.
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 Turn·bull's blue Chem. The double cyanide of ferrous and ferric iron, a dark blue amorphous substance having a coppery luster, used in dyeing, calico printing, etc.  Cf. Prussian blue, under Prussian.
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 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.

 Prussian blue
      n 1: any of various blue pigments [syn: iron blue]
      2: a dark greenish-blue color