fer·​ri·​tin | \ ˈfer-ə-tən How to pronounce ferritin (audio) \

Definition of ferritin

: 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 After relocating to a new state and finding a new hematologist, my ferritin count is now down to 250. Dr. Keith Roach, oregonlive, 28 July 2021 The 36-year-old explained that a blood panel revealed severely low levels of ferritin, which is a protein that helps store iron in the body and typically signifies inadequate levels of stored iron when low, according to the Mayo Clinic. Carolyn L. Todd, SELF, 14 June 2021 Modjarrad and his colleagues had to figure out which parts of the spike to attach to which type of ferritin and how to link the two proteins together. Emily Mullin, Scientific American, 9 June 2021 Barton Haynes and his team at Duke University, working with Baric’s group, recently designed a vaccine that contains a SARS-CoV-2 RBD in a ferritin nanoparticle. Jon Cohen, Science | AAAS, 15 Apr. 2021 The ferritin cage served as a base for constructing a multimeric nanoparticle, aggregating bits of spike protein from different viruses to reach an optimal level of compatibility with the immune system. William A. Haseltine, Forbes, 11 Mar. 2021 This form of ferritin reacts with the blue light, triggering more ion production, which in turn keeps the light glowing in a feedback loop. Rachael Lallensack, Smithsonian Magazine, 28 Dec. 2020 Other inflammatory chemicals such as ferritin and CRP also appear. Gina Kolata, Star Tribune, 14 Nov. 2020 Between admission on March 23 and the following day, Fiske’s ferritin skyrocketed from 1,712 to 4,316 micrograms per liter, more than 10 times the normal amount. Gabrielle Glaser, STAT, 21 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ferritin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of ferritin

1937, in the meaning defined above

History and Etymology for ferritin

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

Keep scrolling for more

Learn More About ferritin

Time Traveler for ferritin

Time Traveler

The first known use of ferritin was in 1937

See more words from the same year

Dictionary Entries Near ferritin




See More Nearby Entries 

Statistics for ferritin

Cite this Entry

“Ferritin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ferritin. Accessed 20 Oct. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for ferritin


fer·​ri·​tin | \ ˈfer-ət-ən How to pronounce ferritin (audio) \

Medical Definition of ferritin

: a crystalline iron-containing protein that functions in the storage of iron and is found especially in the liver and spleen — compare hemosiderin

More from Merriam-Webster on ferritin

Britannica.com: Encyclopedia article about ferritin


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
True or False

Test your knowledge - and maybe learn something along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!