/ Dictionary / Index E erythropoietin: Meaning and Definition of Find definitions for: e•ryth•ro•poi•e•tin Pronunciation: (i-rith"rō-poi'i-tn, -poi-ēt'n), [key] — n. Biochem. a hormone that stimulates production of red blood cells and hemoglobin in the bone marrow, synthesized in response to low levels of oxygen in the tissues. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: erythropoietin (Thesaurus) erythropoiesis erythropsin Related Content Daily Word Quiz: garrulous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language