ɛkˈstɹeɪ.ni.əs ekˈstɹæɪ.ni.əs ɪkˈstɹeɪ.ni.əs ˈfɒɹɪn ˈfɔɹɪn not belonging to that in which it is contained; introduced from an outside source water free of extraneous matter foreign particles in milk