Source : Webster's Revised Unabridged Dictionary (1913)

Urohaematin \U`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}.