urohaematin

n. [ 1st uro- + haematin. ] (Physiol. Chem.) Urinary haematin; -- applied to the normal coloring matter of the urine, on the supposition that it is formed either directly or indirectly (through bilirubin) from the haematin of the blood. See Urochrome, and Urobilin. [ 1913 Webster ]