from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See hydrocyanic acid.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Hydrocyanic acid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds
So called because it was first obtained from Prussian blue.(American Heritage® Dictionary of the English Language, Fourth Edition)