haemopoiesisEnglishOxford Dictionary of Englishhaemopoiesis /ˌhiːmə(ʊ)pɔɪˈiːsɪs / (US English hemopoiesis) ▸ noun [mass noun] the production of blood cells and platelets, which occurs in the bone marrow. – DERIVATIVES haemopoietic /ˌhiːmə(ʊ)pɔɪˈɛtɪk / (US English hemopoietic) adjective– ORIGIN early 20th century: from haemo- ‘of blood’ + Greek poiēsis ‘making’.