Definition of "prussic" [prus•sic]

• Derived from Prussian blue (adjective)
• Of, or derived from prussic acid; hydrocyanic (adjective)

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• "Though we call prussic acid the agent of a person’s death, the whole of the vital and organic properties of the patient are as actively instrumental as the poison, in the chain of effects which so rapidly terminates his sentient existence."
• ""But there is another peculiarity of this family of trees which is not so innocent, and that is that in the fruit-kernel, and also in the leaves, there is a deadly poison called prussic acid.""
• "It dissolves readily in water, its solution being commonly called prussic acid."