electrodialysis Syllabification: (e·lec·tro·di·al·y·sis)Pronunciation: /iˌlektrōdīˈaləsis/Definition of electrodialysis noun Chemistry dialysis in which the movement of ions is aided by an electric field applied across the semipermeable membrane. electrodialysis in other Oxford dictionaries Definition of electrodialysis in the British & World English dictionary