haemopoiesis

haemopoiesis |ˌhiːmə (ʊ )pɔɪˈiːsɪs |(US hemopoiesis ) ▶noun [ mass noun ] the production of blood cells and platelets, which occurs in the bone marrow. DERIVATIVES haemopoietic adjective ORIGIN early 20th cent.: from haemo- ‘of blood ’ + Greek poiēsis ‘making ’.