haematopoiesis in British English
 (ˌhɛmətəʊpɔɪˈiːsɪs, ˌhiː-), haemopoiesis (ˌhɛməʊpɔɪˈiːsɪs, ˌhiː-),  US hematopoiesis or hemopoiesis
noun Also called: haematosis, haematogenesis physiology the formation of blood
   Derived forms
haematopoietic or  US hematopoietic (ˌhɛmətəʊpɔɪˈɛtɪk, ˌhiː-), haemopoietic or  US hemopoietic (ˌhiːməpɔɪˈɛtɪk, ˌhɛm-) adjective