'Prussic' definitions:
Definition of 'Prussic'
From: GCIDE
- Prussic \Prus"sic\, a. [Cf. F. prussique.] (Old Chem.) designating the acid now called hydrocyanic acid, but formerly called prussic acid, because Prussian blue is derived from it or its compounds. See Hydrocyanic. [1913 Webster]