Origin of hemosiderin
International Scientific Vocabulary hem- + sider- + 1-in
First Known Use: circa 1885
Medical Definition of hemosiderin
: a yellowish brown granular pigment formed by breakdown of hemoglobin, found in phagocytes and in tissues especially in disturbances of iron metabolism (as in hemochromatosis, hemosiderosis, or some anemias), and composed essentially of colloidal ferric oxide—compare ferritin
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