electrode
nounUK /ɪˈlɛktrəʊd/
US /ɪˈlɛktroʊd/
A metal part that lets electricity go in or out of something.
The battery has a positive electrode and a negative electrode.
RELATED WORDS
OTHER MEANINGS
2. The anode or cathode in an electrolytic cell where chemical reactions happen.
During electrolysis, ions move toward the electrode.
3. A small sensor pad that picks up electrical signals from the body.
The doctor placed an electrode on his chest to check his heart.
4. The part of a welding tool that carries the electric current.
He replaced the worn electrode in the welding torch.