electrode
noun /ɪˈlektrəʊd/
/ɪˈlektrəʊd/
- either of two points (or terminals) by which an electric current enters or leaves a battery or other electrical device
see also anode, cathodeTopics Engineeringc1电极 词源mid 19th cent.: from electric + Greek hodos ‘way’, on the pattern of anode and cathode.