from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A poorly-characterised material, related to urea and uric acid, that forms yellow salts, and exhibits a blue fluorescence
from the GNU version of the Collaborative International Dictionary of English
- n. A complex nitrogenous substance related to urea and uric acid, produced as a white powder; -- so called because it forms yellow salts, and because its solution forms a blue fluorescence like quinine.
from The Century Dictionary and Cyclopedia
- n. A colorless, pulverulent compound, C4H3O2N3, prepared by heating ammonium thionurate.
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