Turnbull's blue

noun
Turn·bull's blue | \ ˈtərnˌbu̇lz- \

Definition of Turnbull's blue 

: 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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History and Etymology for Turnbull's blue

probably from the name Turnbull

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Dictionary Entries near Turnbull's blue

turn bridge

turnbuckle

Turnbull

Turnbull's blue

turn button

turncap

turncoat

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