electrode - a conductor used to make electrical contact with some part of a circuit

electrolytic cell - a cell containing an electrolyte in which an applied voltage causes a reaction to occur that would not occur otherwise (such as the breakdown of water into hydrogen and oxygen)

photocathode - a cathode that emits electrons when illuminated

electron tube, thermionic tube, thermionic vacuum tube, thermionic valve, vacuum tube, tube - electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

storage battery, accumulator - a voltaic battery that stores electric charge

depot, terminal, terminus - station where transport vehicles load or unload passengers or goods

galvanic cell, primary cell, voltaic cell - an electric cell that generates an electromotive force by an irreversible conversion of chemical to electrical energy; cannot be recharged