单词	ferrocyanide
释义	ferrocyanide noun fer·​ro·​cy·​a·​nide ˌfer-ō-ˈsī-ə-ˌnīd  1 : the tetravalent anion Fe(CN)64− 2 : a compound containing the ferrocyanide anion especially : the salt K4Fe(CN)6 used in making blue pigments (such as Prussian blue) Example Sentences Recent Examples on the Web The ensuing reaction created a distinctive blue-hued iron ferrocyanide and eventually came to be called Prussian blue (or Berlin blue). Jennifer Ouellette, Ars Technica, 20 June 2022 So then, in certain kinds of lakes, ferrocyanide can accumulate over time. Quanta Magazine, 1 June 2022 Riepenhoff got the idea three years ago while studying cyanotypes, an old photo technique that involves placing objects on paper coated with iron and potassium ferrocyanide. Laura Mallonee, WIRED, 30 Aug. 2016 Word History First Known Use 1825, in the meaning defined at sense 1 Medical Definition ferrocyanide noun fer·​ro·​cy·​a·​nide ˌfer-ō-ˈsī-ə-ˌnīd  1 : the tetravalent anion Fe(CN)64− 2 : a compound containing the ferrocyanide anion especially : the salt K4Fe(CN)6 used in making blue pigments (as Prussian blue)
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