immunoelectrophoresis Syllabification: (im·mu·no·e·lec·tro·pho·re·sis)Pronunciation: /ˌimyənō-iˌlektrōfəˈrēsis, iˈmyo͞o-/Definition of immunoelectrophoresis noun Biochemistry a technique for the identification of proteins in serum or other fluid by electrophoresis and subsequent immunodiffusion. immunoelectrophoresis in other Oxford dictionaries Definition of immunoelectrophoresis in the British & World English dictionary