【化】 柏林蓝; 普鲁士蓝; 亚铁氰化铁
【医】 柏林蓝, 普鲁士蓝

Prussian \Prus"sian\, a. [From Prussia, the country: cf. F.
prussien.]
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} (Zo["o]l.) See {Gibel}.

{Prussian green}. (Chem.) Same as {Berlin green}, under
{Berlin}.


Berlin \Ber"lin\, n. [The capital of Prussia]
1. A four-wheeled carriage, having a sheltered seat behind
the body and separate from it, invented in the 17th
century, at Berlin.

2. Fine worsted for fancy-work; zephyr worsted; -- called
also {Berlin wool}.

{Berlin black}, a black varnish, drying with almost a dead
surface; -- used for coating the better kinds of ironware.
--Ure.

{Berlin blue}, Prussian blue. --Ure.

{Berlin green}, a complex cyanide of iron, used as a green
dye, and similar to Prussian blue.

{Berlin iron}, a very fusible variety of cast iron, from
which figures and other delicate articles are
manufactured. These are often stained or lacquered in
imitation of bronze.

{Berlin shop}, a shop for the sale of worsted embroidery and
the materials for such work.

{Berlin work}, worsted embroidery.


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.

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

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

{Berlin blue}, Prussian blue.

{Mineral blue}. See under {Mineral}.

{Prussian blue}. See under {Prussian}.