Turnbull's blue

noun Turn·bull's blue \ˈtərnˌbu̇lz-\

Definition of Turnbull's blue

  1. :  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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Origin and Etymology of turnbull's blue

probably from the name Turnbull


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