eryth·​ro·​poi·​e·​tin | \ i-ˌrith-rō-ˈpȯi-ə-tən How to pronounce erythropoietin (audio) \

Definition of erythropoietin

: 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 There is an additional factor that favored cheating with erythropoietin. Bryant Stamford, The Courier-Journal, 28 Apr. 2022 Julia Mumbi Muraga received a two-year ban from Athletics Kenya on Thursday after testing positive for the performance-enhancing drug erythropoietin (EPO). The Editors, Outside Online, 19 Feb. 2015 Nor was there any trace of erythropoietin (EPO), the subject of a speculative story that appeared in the New York Post. Tim Sullivan, The Courier-Journal, 11 Feb. 2022 He is accused of providing human growth hormones and the blood-building drug erythropoietin to two track-and-field athletes who resided in Florida in 2021. James Fanelli, WSJ, 12 Jan. 2022 Lira, 41, allegedly obtained misbranded human growth hormone and the blood building drug erythropoietin in advance of the Tokyo Games from sources in Central and South America. Aaron Katersky, ABC News, 12 Jan. 2022 Healthy kidneys make a hormone called erythropoietin (EPO), which sends a signal to your body's bone marrow to make more red blood cells. Hallie Levine,, 23 Nov. 2021 Primary substances, including anabolic steroids and erythropoietin (EPO) that can increase red blood cells and boost aerobic capacity, would be prohibited at all times. Beth Harris, ajc, 11 Nov. 2021 People with chronic kidney disease, for example, can't make erythropoietin, and therefore have hypoxic cells, Semenza said. Jennifer Leman, Popular Mechanics, 8 Oct. 2019 See More

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

First Known Use of erythropoietin

1948, in the meaning defined above

Learn More About erythropoietin

Time Traveler for erythropoietin

Time Traveler

The first known use of erythropoietin was in 1948

See more words from the same year

Dictionary Entries Near erythropoietin




See More Nearby Entries 

Statistics for erythropoietin

Last Updated

12 Jun 2022

Cite this Entry

“Erythropoietin.” Dictionary, Merriam-Webster, Accessed 7 Aug. 2022.

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

More Definitions for erythropoietin


eryth·​ro·​poi·​e·​tin | \ -ˈpȯi-ət-ən How to pronounce erythropoietin (audio) \

Medical Definition of erythropoietin

: a hormonal substance that is formed especially in the kidney and stimulates red blood cell formation abbreviation EPO — see epogen

More from Merriam-Webster on erythropoietin Encyclopedia article about erythropoietin


Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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