\Prus"si*ate\, n. [Cf. F. prussiate.] (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}.