hydrocyanic acid Hear it!

hydrocyanic acid definition

hydro·cy·anic acid (hī′drō sī an′ik)

a weak, highly poisonous acid, HCN, that is a colorless liquid with the odor of bitter almonds: it is used as a fumigant, poison gas, in metallurgy, etc.

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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