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n.1.(Physiol. Chem.) A coloring matter found in the fæces, a product of the alteration of the bile pigments in the intestinal canal, - identical with hydrobilirubin.
References in periodicals archive ?
These molecules are later catabolized to urobilin and stercobilin, which stain stools yellow-brown.
By the time it ends up in your toilet bowl it is a molecule called stercobilin.
Convert urobilinogen to stercobilinogen, which is excreted in the faeces as stercobilin and imparts the brown colour to faecal matter.