Prussian blue

Prussian blue

n.

1. An insoluble dark blue pigment and dye, ferric ferrocyanide or one of its modifications.

2. See iron blue.

3. A moderate to strong blue or deep greenish blue.

---

[From its having been discovered by an 18th-century color-maker in Berlin (then in Prussia).]

---

Prussian blue

n

1. (Chemistry / Elements & Compounds) any of a number of blue pigments containing ferrocyanide or ferricyanide complexes

2. (Fine Arts & Visual Arts / Colours)

a.  the blue or deep greenish-blue colour of this pigment

b.  (as adjective) a Prussian-blue carpet

Thesaurus

Noun	1.	Prussian blue - any of various blue pigments iron blue pigment - dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
	2.	Prussian blue - a dark greenish-blue color blue, blueness - blue color or pigment; resembling the color of the clear sky in the daytime; "he had eyes of bright blue"