hemostasis Syllabification: (he·mo·sta·sis)Pronunciation: /ˌhēməˈstāsəs, heme-/ (British haemostasis)Definition of hemostasis noun Medicine the stopping of a flow of blood. Derivatives hemostaticPronunciation: /-ˈstatik/ adjective hemostasis in other Oxford dictionaries Definition of hemostasis in the British & World English dictionary