cyanuric acid

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A white crystalline acid, C₃H₃N₃O₃, that decomposes with heating to form cyanic acid gas, used in manufacture of sanitizers and herbicides.

from the GNU version of the Collaborative International Dictionary of English.

• (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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun chemistry An aromatic heterocyclic organic compound, C3N3(OH)3, that decomposes on heating to form cyanic acid; it is a prebiotic compound found in stellar dust clouds.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a trimer of cyanic acid