prussian blue

Noun

WordNet 3.0

Noun (2)

any of various blue pigmentsSynonyms: iron blue Prussian blue
a dark greenish-blue colorSynonyms: Prussian blue

Webster's Dictionary (GCIDE)

Prussian \Prus"sian\, a. [From Prussia, the country: cf. F. prussien.] Of or pertaining to Prussia. -- n. A native or inhabitant of Prussia. [1913 Webster]

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. [1913 Webster]

Blue \Blue\ (bl[=u]), 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. [1913 Webster]

2.A pedantic woman; a bluestocking. [Colloq.] [1913 Webster]

3.pl. [Short for blue devils.] Low spirits; a fit of despondency; melancholy. [Colloq.] [1913 Webster]

Berlin blue, Prussian blue.

Mineral blue. See under Mineral.

Prussian blue. See under Prussian. [1913 Webster]