ex·trac·tion/ɪk`strækʃən; ɪkˈstrækʃən/ n 1 [C,U] the process of removing an object or substance from something else 取出，提炼: the extraction of salt from sea water 从海水中提炼盐 2 of French/Irish etc extraction having family members who come from France, Ireland etc even though you were not born in that country 有法国/爱尔兰等血统的