- a moderate to deep greenish blue.
- one of the iron blues, a dark-blue, crystalline, water-insoluble pigment, Fe4[Fe(CN)6]3, produced by reacting ferrocyanic acid or a ferrocyanide with a ferric compound: used in painting, fabric printing, and laundry bluing.
Origin of Prussian blue
1715–25; translation of French bleu de Prusse, so called because it was discovered and first reported in Berlin, capital of Prussia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for prussian blue
Indigo is not discharged by sodium hydroxid, while Prussian-blue is.Detection of the Common Food Adulterants
Edwin M. Bruce
A variety of shades, of great beauty, and considerable permanence, may also be given by the Prussian-blue process.
"Nothing whatever to do with the Army," he snapped, and a Prussian-blue opponent was smacked off into an arid and hoopless waste.
- any of a number of blue pigments containing ferrocyanide or ferricyanide complexes
- the blue or deep greenish-blue colour of this pigment
- (as adjective)a Prussian-blue carpet
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.