(physics) Anything having six poles or electrodes
the terminal through which electric current passes between metallic and nonmetallic parts of an electric circuit
a collector or emitter of electric charge in a semiconducting device
a conducting object by which electricity is conveyed into or from a solution or other non-metallic conducting medium; esp., the ends of the wires or conductors, leading from source of electricity, and terminating in the medium traversed by the current.
a conductor used to make electrical contact with some part of a circuit
An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte, a vacuum or air).