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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Cite this Entry

“Turnbull's blue.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Turnbull%27s%20blue. Accessed 24 Oct. 2020.

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