he·​mo·​sid·​er·​in | \ ˌhē-mō-ˈsi-də-rən How to pronounce hemosiderin (audio) \

Definition of hemosiderin

: a yellowish-brown, iron-containing, granular pigment that is found within cells (such as macrophages), is composed chiefly of aggregates of ferritin, and is typically associated with bleeding and the breakdown of red blood cells (as in hemolytic anemia)

First Known Use of hemosiderin

1888, in the meaning defined above

History and Etymology for hemosiderin

borrowed from German Hämosiderin, from hämo- hemo- + Greek sídēros "iron" + German -in -in entry 1 — more at sidero-

Note: Term introduced by the German pathologist Ernst Neumann (1834-1918) in "Beiträge zur Kenntniss der pathologischen Pigmente," Archiv für pathologische Anatomie und Physiologie, Band 111 (1888), pp. 25-47.

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The first known use of hemosiderin was in 1888

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Cite this Entry

“Hemosiderin.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/hemosiderin. Accessed 28 January 2020.

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More Definitions for hemosiderin


variants: or chiefly British haemosiderin \ ˌhē-​mō-​ˈsid-​ə-​rən How to pronounce haemosiderin (audio) \

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

More from Merriam-Webster on hemosiderin

Britannica.com: Encyclopedia article about hemosiderin

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