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[fer-i-tn] /ˈfɛr ɪ tn/
noun, Biochemistry
an amber-colored, crystalline protein, found in the liver, spleen, and bone marrow, that consists of apoferritin combined with a ferric hydroxide-ferric phosphate complex and that stores iron for use in metabolism.
1935-40; ferrite + -in2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for ferritin
  • If you haven't already, get a serum ferritin test to check if the iron you are taking orally is being absorbed.
  • ferritin is a protein that binds to iron and helps to store iron in the body.
  • ferritin is a protein that binds to iron, and low levels typically mean the patient does not have enough iron in their body.
British Dictionary definitions for ferritin


(biochem) a protein that contains iron and plays a part in the storage of iron in the body. It occurs in the liver and spleen
Word Origin
C20: from ferrite + -in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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ferritin in Medicine

ferritin fer·ri·tin (fěr'ĭ-tĭn)
An iron-containing protein complex, found principally in the intestinal mucosa, spleen, and liver, that functions as the primary form of iron storage in the body.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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