SINCE 1828
Prussian blue
noun
Prus·sian blue
| \ ˈprə-shən-
\
\
Definition of Prussian blue
1
: any of numerous blue iron pigments formerly regarded as ferric ferrocyanide
2
: a dark blue crystalline hydrated ferric ferrocyanide Fe4[Fe(CN)6]3·xH2O used as a test for ferric iron
3
: a greenish blue
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More Definitions for Prussian blue
Prussian blue
noun
Prus·sian blue
| \ ˈprəsh-ən-ˈblü
\
\
Medical Definition of Prussian blue
1
: any of numerous blue iron pigments formerly regarded as the ferric salt of ferrocyanide
2
: a dark blue crystalline hydrated compound Fe4[Fe(CN)6]3·xH2O that is a ferrocyanide of iron and is used as a test for ferric iron
— called also ferric ferrocyanide
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