Prussian blue

/ˌprʌʃən blu/

Other forms: Prussian blues

Definitions of Prussian blue

1. noun

   any of various blue pigments
   synonyms: iron blue

   type of:

   pigment

   dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)
2. noun

   a dark greenish-blue color
   type of:

   blue, blueness

   blue color or pigment; resembling the color of the clear sky in the daytime