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.

An electrically conducting surface that allows electrons to be transferred between reactants in an electrochemical cell.

the point in an electrochemical cell at which reduction or oxidation occurs.

A collector or emitter of an electrical charge. The needle in galvanic electrolysis is the negative electrode or cathode.

an adhesive patch that adheres to the skin and serves as the medium between the heart and an EKG recorder.

An adhesive patch placed anywhere on the body, and connected by a wire to a monitor, used to detect heart rate, respirations, or blood oxygen levels. (See also: pulse oximeter)

A small wire that is attached to the scalp of the fetus and transmits electronic impulses.

A small device that is attached with a wire to the fetus and transmits electronic impulses.