hemosiderin

noun Biochemistry.

1. a yellowish-brown protein containing iron, derived chiefly from hemoglobin and found in body tissue and phagocytes, especially as the result of disorders in iron metabolism and the breakdown of red blood cells.

n.

1. An insoluble protein that contains iron and that is produced by phagocytic digestion of hematin and found as granules in most tissues, especially in the liver.