electrosurgery Syllabification: (e·lec·tro·sur·ger·y)Pronunciation: /iˌlektrōˈsərjərē/Definition of electrosurgery noun surgery using a high-frequency electric current to heat and so cut tissue with great precision. Derivatives electrosurgicalPronunciation: /-ˈsərjikəl/ adjective electrosurgery in other Oxford dictionaries Definition of electrosurgery in the British & World English dictionary