urrhodin

from The Century Dictionary.

• noun A red coloring matter occasionally found in alkaline urine in cases of inflammation of the bladder.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Physiol. Chem.) Indigo red, a product of the decomposition, or oxidation, of indican. It is sometimes found in the sediment of pathological urines. It is soluble in ether or alcohol, giving the solution a beautiful red color. Also called indigrubin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun organic chemistry Indigo red, a product of the decomposition or oxidation of indican, sometimes found in the sediment of pathological urines.