‖ hæmatemesisPath.|hiːməˈtɛmɪsɪs| [mod.L., f.Gr. αἱµατ- blood + ἔµεσις vomiting.] Vomiting of blood. 1800Med.Jrnl. IV. 475 Hæmatemesis.1806Ibid. xv. 187 This hæmatemesis..being peculiar to the female sex.1894Quain's Dict.Med. I. 764 Congestion of the portal system is a very frequent cause of hæmatemesis.