
• (n.) A complex nitrogenous substance C3N3H5O3 obtained from alloxan (or when urea is fused with ethyl oxamate), as a stable white crystalline powder; -- called also oxaluramide.
Found on 
http://thinkexist.com/dictionary/meaning/oxalan/
 Ox'a·lan  noun
Ox'a·lan  noun [ From 
 Alloxan , by transposition of letters.] 
 (Chemistry) A complex nitrogenous substance C
 3 N
 3 H
 5 O
 3 obtained from alloxan (or when urea is fused with ethyl oxamate), as a stable white crystalline powder; -- called also 
 oxa...Found on 
http://www.encyclo.co.uk/webster/O/61
  No exact match found.