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Definition of Hydrocyanic acid
1. Noun. A solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds.
Medical Definition of Hydrocyanic acid
1. HCN;a colourless, very toxic liquid, with the odour of bitter almonds, present in bitter almonds (amygdalin), the stones of peaches, plums and other fruits, and laurel leaves; inhalation of 300 p.p.m. Causes death. Synonym: hydrogen cyanide, prussic acid. (05 Mar 2000)