converter Syllabification: (con·vert·er)Pronunciation: /kənˈvərtər/ (also convertor)Translate converter | into Italian Definition of converter noun a person or thing that converts something:the converter of a building to domestic use a device for altering the nature of an electric current or signal, especially from AC to DC or vice versa, or from analog to digital or vice versa. a retort used in steelmaking. short for catalytic converter. Computing a program that converts data from one format to another. a camera lens that changes the focal length of another lens by a set amount:a camera fitted with a x2 converterconverter in other Oxford dictionaries Definition of converter in the British & World English dictionary