electrometer Syllabification: (e·lec·trom·e·ter)Pronunciation: /ilekˈträmitər, ˌēlek-/Definition of electrometer noun Physics an instrument for measuring electrical potential without drawing any current from the circuit. Derivatives electrometricPronunciation: /iˌlektrəˈmetrik/ adjective electrometryPronunciation: /-ˈträmitrē/ noun electrometer in other Oxford dictionaries Definition of electrometer in the British & World English dictionary