a hormone that stimulates erythropoiesis, produced mainly in the kidneys of higher organisms
See erythropoietin in American Heritage Dictionary 4
(ĭ-rĭthˌrō-poi-ēˈtĭn)
noun
A glycoprotein hormone that stimulates the production of red blood cells by stem cells in bone marrow. Produced mainly by the kidneys, it is released in response to decreased levels of oxygen in body tissue.