The Collaborative International Dictionary
Hydrocyanic \Hy`dro*cy*an"ic\, a. [Hydro-, 2 + anic: cf. F. hydrocyanique.] (Chem.) Pertaining to, or derived from the combination of, hydrogen and cyanogen.
Hydrocyanic acid (Chem.), a colorless, mobile, volatile liquid, HCN, having a characteristic peach-blossom odor. It is one of the most deadly poisons. It is made by the action of sulphuric acid on yellow prussiate of potassium (potassium ferrocyanide), and chemically resembles hydrochloric and hydrobromic acids. Called also prussic acid, hydrogen cyanide, etc.
Wiktionary
a. Of or pertaining to hydrocyanic acid or its compounds
WordNet
Usage examples of "hydrocyanic".
Structure of the leaves--Sensitiveness of the filaments--Rapid movement of the lobes caused by irritation of the filaments--Glands, their power of secretion--Slow movement caused by the absorption of animal matter--Evidence of absorption from the aggregated condition of the glands--Digestive power of the secretion--Action of chloroform, ether, and hydrocyanic acid--The manner in which insects are captured--Use of the marginal spikes--Kinds of insects captured--The transmission of the motor impulse and mechanism of the movements--Reexpansion of the lobes.
I understand you to say you used anhydrous hydrocyanic or cyanhydric acid.
Drosera, and quickly cause strong inflection, it seems probable that strychnine, nicotine, digitaline, and hydrocyanic acid, excite inflection by acting on elements in no way analogous to the nervecells of animals.
Cyanide of potassium, when left in a bottle, generates prussic or hydrocyanic acid.
Lancaster had evidently known where the jug of hydrocyanic acid had been placed.
The jug of hydrocyanic, once he threw it, would either hit Doc Savage or burst close enough to splash the bronze man.
There was nothing they could do to aid those whom the hydrocyanic was probably killing.
Toby yielded an appreciable dosage of hydrocyanic acid, some undigested chocolate cream and enough silver foil for the forensic laboratory to decipher the letters RDAM on it.
Chocolate-cream either from Amsterdam or Rotterdam, probably purchased out there and subsequently impregnated with hydrocyanic acid.
The vapour of hydrocyanic acid, if present, will form a white precipitate which may be tested.
Immediately after dampening they transform into the feared hydrocyanic acid gas, or Prussic acid.
He had encountered suicide, he said, where the substance was used and also been involved with some industrial accidents where people were killed as the result of hydrocyanic acid, but he had never encountered it as a murder weapon.
Rusteloos there are many industries where hydrocyanic acid is used regularly.
In most agricultural concerns there is enough hydrocyanic acid present to wipe out entire communities.
He also thought that hydrocyanic acid poisoning would be easily established during the toxicological investigation.