1. a device that changes something from one form to another
2. a person who changes from one religion, belief, or opinion to another

Examples

• The power converter changes AC current to DC current.
• I need a voltage converter for my European appliances.
• The digital converter transforms analog signals into digital ones.
• She used a file converter to change the document format.
• The new converter to Christianity spoke passionately about his faith.
• Many converters joined the movement after hearing the speech.
• The catalytic converter reduces harmful emissions from cars.