eryth·​ro·​poi·​e·​tin i-ˌrith-rō-ˈpȯi-ə-tən How to pronounce erythropoietin (audio)
: a glycoprotein hormone formed especially in the kidney and stimulating red blood cell formation

Examples of erythropoietin in a Sentence

Recent Examples on the Web Jeptoo, whose 2014 triumph here was her third, ultimately was caught and banned for using blood-boosting erythropoietin. John Powers,, 14 Apr. 2023 The Phase 2 study found erythropoietin was beneficial. Edward Chen, STAT, 18 July 2022 Our kidneys produce most of our natural erythropoietin, a hormone that leads to the creation of red blood cells. Joseph Calamia, Discover Magazine, 26 May 2010 Semenza studied the hormone erythropoietin (EPO), which increases the production of red blood cells under low oxygen conditions, known as hypoxia. Brian Owens, Discover Magazine, 7 Oct. 2019 Ostarine is classified as an anabolic agent, which is a broad, potent class of performance-enhancing substances that includes steroids, human growth hormone and erythropoietin (EPO). Brent Schrotenboer, USA TODAY, 20 Oct. 2022 How did Lance Armstrong use erythropoietin to cheat? Bryant Stamford, The Courier-Journal, 28 Apr. 2022 In 1993, an influential publication reported that the erythropoietin receptor was found on mouse neurons. Edward Chen, STAT, 18 July 2022 Based on previous positive results, some physicians were already prescribing erythropoietin to newborns with hypoxic-ischemic encephalopathy. Edward Chen, STAT, 18 July 2022 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'erythropoietin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1948, in the meaning defined above

Time Traveler
The first known use of erythropoietin was in 1948

Dictionary Entries Near erythropoietin

Cite this Entry

“Erythropoietin.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2023.

Kids Definition


eryth·​ro·​poi·​e·​tin i-ˌrith-rō-ˈpȯi-ət-ən How to pronounce erythropoietin (audio)
: a hormone that stimulates red blood cell formation and is formed especially in the kidney

Medical Definition


eryth·​ro·​poi·​e·​tin -ˈpȯi-ət-ən How to pronounce erythropoietin (audio)
: a hormonal substance that is formed especially in the kidney and stimulates red blood cell formation
abbreviation EPO
see epogen

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