n.
Pronunciation: ˌ h ē -m ō - ' si-d ə -r ə n
Function: noun
Etymology: International Scientific Vocabulary hem- + sider- + 1 -in
Date: circa 1885
: a yellowish-brown granular intracellular pigment that is formed in some phagocytic cells (as macrophages) by the breakdown of hemoglobin and is prob. essentially a denatured form of ferritin