Cyanuric acid Chem., an organic acid, C3O3N3H3, first obtained by heating uric acid or urea, and called pyrouric acid; afterwards obtained from isocyanic acid. It is a white crystalline substance, odorless and almost tasteless; -- called also tricarbimide.
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  I·so·cy·an·ic a.  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.
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  isocyanic acid
       n : an acid known only in the form of its esters