Prus·si·ate n. Chem. A salt of prussic acid; a cyanide.
Red prussiate of potash. See Potassium ferricyanide, under Ferricyanide.
Yellow prussiate of potash. See Potassium ferrocyanide, under Ferrocyanide.
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Fer·ri·cy·a·nide n. Chem. One of a complex series of double cyanides of ferric iron and some other base.
Potassium ferricyanide Chem., red prussiate of potash; a dark, red, crystalline salt, K6(CN)12Fe2, consisting of the double cyanide of potassium and ferric iron. From it is derived the ferrous ferricyanate, Turnbull's blue.
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