Ni`tro*prus"sic (? ∨ ), a. [Nitro- + prussic.] Chem.
Pertaining to, derived from, or designating, a complex acid called nitroprussic acid, obtained indirectly by the action of nitric acid on potassium ferrocyanide (yellow prussiate), as a red crystalline unstable substance. It forms salts called nitroprussides, which give a rich purple color with alkaline subphides.
© Webster 1913.