from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An insoluble dark blue pigment and dye, ferric ferrocyanide or one of its modifications.
- n. See iron blue.
- n. A moderate to strong blue or deep greenish blue.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An insoluble dark, bright blue pigment, ferric ferrocyanide (equivalent to ferrous ferricyanide)
- n. A moderate to rich blue colour, tinted with deep greenish blue.
- adj. Of a rich blue colour, tinted with green.
from the GNU version of the Collaborative International Dictionary of English
- n. See under Prussian.
- adj. 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.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of various blue pigments
- n. a dark greenish-blue color
From its having been discovered by an 18th-century color-maker in Berlin (then in Prussia).(American Heritage® Dictionary of the English Language, Fourth Edition)
The pigment was discovered in Germany (Prussia at the time) by Diesbach. (Wiktionary)