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Prussian blue

noun Prus·sian blue \ ˈprə-shən- \
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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

Origin and Etymology of prussian blue

Prussia, Germany

Medical Dictionary

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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Prussian blue

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