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Webster 1913 Edition

Prussic

Prus′sic

,
Adj.
[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
.

Webster 1828 Edition

Prussic

PRUSSIC

,
Adj.
The prussic acid is a compound of kyanogen or cyanogen, prussic gas and hydrogen, and hence called hydrocyanic acid. It is one of the strongest poisons known.

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