凝血酶 Traditional form: 凝血酶 Pinyin (reading): níngxuèméi Definitions: thrombin (biochemistry) Characters: 凝 - to coagulate, to congeal; to freeze 血 - blood 酶 - enzyme; to ferment Traditional characters: 凝 - to coagulate, to congeal; to freeze 血 - blood 酶 - enzyme; to ferment