The Collaborative International Dictionary
Isocyanic
Isocyanic \I`so*cy*an"ic\, a. [Iso- + cyanic.] (Chem.) Designating an acid isomeric with cyanic acid.
Isocyanic acid, an acid metameric with cyanic acid, and resembling it in its salts. It is obtained as a colorless, mobile, unstable liquid by the heating cyanuric acid. Called technically carbimide.
Wiktionary
isocyanic
a. (context chemistry English) Of or pertaining to isocyanic acid, and to its salts (the isocyanates)