electrode
Technical term for a conductor through which electricity enters or leaves a medium. Common in physics, electronics, and battery contexts.
電池には正極と負極の二つの電極がある。
A battery has two electrodes: a positive and a negative electrode.
電極を溶液に浸して電流を流した。
We immersed the electrodes in the solution and passed an electric current through them.
I attached electrodes to the battery.
We applied a high voltage between the electrodes for the experiment.
The electrode corrodes after long-term use.