hydrocyanic acid
noun
hy·dro·cy·an·ic acid ˌhī-drō-sī-ˈa-nik- 
: an aqueous solution of hydrogen cyanide HCN that is a poisonous weak acid and is used chiefly in fumigating and in organic synthesis
Word History
Etymology
International Scientific Vocabulary
First Known Use
1816, in the meaning defined above
Medical Definition
hydrocyanic acid
noun
hy·dro·cy·an·ic acid ˌhī-drō-sī-ˌan-ik-
: an aqueous solution of hydrogen cyanide HCN that is an extremely poisonous weak acid used especially in fumigating
called also prussic acid
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