• (n.) A white crystalline nitrogenous substance (C6H4N4O5) obtained by the reduction of parabanic acid; -- called also leucoturic acid.
Ox`a·lan'tin noun [ From Alloxantin , by transposition of letters.] (Chemistry) A white crystalline nitrogenous substance (C 6 H 4 N 4 O 5 ) obtained by the reduction of parabanic acid; -- called also leucoturic acid .