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TAKE THE QUIZTurnbull's blue
noun
Turn·bull's blue
ˈtərnˌbu̇lz-
: an iron blue pigment having a coppery luster formed as a precipitate when an alkali metal ferricyanide and a ferrous salt are brought together in solution and formerly regarded as ferrous ferricyanide compare prussian blue
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Merriam-Webster unabridged
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- The business’s new computer system proved not to be a panacea.


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