hemangioendothelioma

noun
he·​man·​gio·​en·​do·​the·​li·​o·​ma
variants: or chiefly British haemangioendothelioma \ -​jē-​ō-​ˌen-​dō-​ˌthē-​lē-​ˈō-​mə How to pronounce haemangioendothelioma (audio) \
plural hemangioendotheliomas also hemangioendotheliomata\ -​mət-​ə How to pronounce hemangioendotheliomata (audio) \

Medical Definition of hemangioendothelioma

: an often malignant tumor originating by proliferation of capillary endothelium