The Collaborative International Dictionary
hydrobilirubin
Stercobilin \Ster`co*bi"lin\, n. [L. stercus dung + E. bilin.] (Physiol. Chem.) A coloring matter found in the f[ae]ces, a product of the alteration of the bile pigments in the intestinal canal, -- identical with hydrobilirubin.
Wiktionary
hydrobilirubin
n. (context biochemistry English) A body formed from bilirubin, identical with urobilin.