UrohaematinU`ro*h[ae]m"a*tin\, n. [1st uro- + h[ae]matin.] (Physiol. Chem.) Urinary h[ae]matin; -- applied to the normal coloring matter of the urine, on the supposition that it is formed either directly or indirectly (through bilirubin) from the h[ae]matin of the blood. See Urochrome, and Urobilin.