Pyrouric \Pyr`o*["u]"ric\, a. [Pyro- + uric.] (Old Chem.) Pertaining to, or designating, an acid now called cyanuric acid. See Cyanuric.
Source: Webster's Revised Unabridged Dictionary (1913)
Cyanuric \Cy`a*nu"ric\ (s?`?-n?"r?k), a. [Cyanic + uric: Cf. F. cyanurique.] (Chem.) Pertaining to, or derived from, cyanic and uric acids.