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

First Known Use of Prussian blue

1724, in the meaning defined at sense 1

History and Etymology for Prussian blue

Prussia, Germany

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The first known use of Prussian blue was in 1724

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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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