Oxonic

• (a.) Pertaining to, or designating, a complex nitrogenous acid (C4H5N3O4) not known in the free state, but obtained, in combination with its salts, by a slow oxidation of uric acid, to which it is related.
Found on http://thinkexist.com/dictionary/meaning/oxonic/

Oxonic

Ox·on'ic adjective [ Prob. gly ox alic + carb onic .] (Chemistry) Pertaining to, or designating, a complex nitrogenous acid (C 4 H 5 N 3 O 4 ) not known in the free state, but obtained, in combination with its salts, by a slow oxidation of u...
Found on http://www.encyclo.co.uk/webster/O/62
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