vasculogenesis

noun
vas·​cu·​lo·​gen·​e·​sis | \ ˌvas-kyə-lō-ˈjen-ə-səs How to pronounce vasculogenesis (audio) \
plural vasculogeneses\ -​ˌsēz How to pronounce vasculogeneses (audio) \

Medical Definition of vasculogenesis

: embryonic formation and differentiation of the vascular system