RhymeZone: epo definitions

Definitions of EPO:

noun: Exclusive Provider Organization.
noun: Erythropoietin.
noun: Emergency protective order
noun: Initialism of European Patent Office.
noun: Initialism of erythropoietin. [(biochemistry) A glycoprotein hormone that functions as a cytokine for erythrocyte precursors in bone marrow.]

(Definitions from Wiktionary)