ferritin

noun

fer·​ri·​tin ˈfer-ə-tən How to pronounce ferritin (audio)
: a crystalline iron-containing protein that functions in the storage of iron and is found especially in the liver and spleen

Examples of ferritin in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And after moving to Colorado with her partner and setting up a medical appointment, a physician's assistant noticed her ferritin levels weren't rising, and referred her to a gynecologist. Nicholas Creel, MSNBC Newsweek, 20 Apr. 2025 Iron deficiency Heavy periods and vegetarianism can lead to low levels of ferritin, a protein that stores iron in the body. Shannon Lawlor, Glamour, 14 Apr. 2025 Other nutrients that may play a role include ferritin, folate, and B12. Matt Fuchs, TIME, 26 Feb. 2025 The blood test checks hemoglobin, hematocrit, mean corpuscular volume (MCV) levels, transferrin, and ferritin. Amy Brownstein, Ms, Rdn, Verywell Health, 25 Feb. 2025 See All Example Sentences for ferritin

Word History

Etymology

International Scientific Vocabulary, alteration of ferratin, iron-containing protein, from Latin ferratus bound with iron (from ferrum) + International Scientific Vocabulary -in

First Known Use

1937, in the meaning defined above

Time Traveler
The first known use of ferritin was in 1937

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Cite this Entry

“Ferritin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ferritin. Accessed 2 May. 2025.

Medical Definition

ferritin

noun
fer·​ri·​tin ˈfer-ət-ən How to pronounce ferritin (audio)
: a crystalline iron-containing protein that functions in the storage of iron and is found especially in the liver and spleen compare hemosiderin

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