electrode

8 ENTRIES FOUND:

elec·trode

noun \i-ˈlek-ˌtrōd\

: one of the two points through which electricity flows into or out of a battery or other device

Full Definition of ELECTRODE

1
:  a conductor used to establish electrical contact with a nonmetallic part of a circuit
2
:  an element in a semiconductor device (as a transistor) that emits or collects electrons or holes or controls their movements

First Known Use of ELECTRODE

1834

elec·trode

noun \i-ˈlek-ˌtrōd\   (Medical Dictionary)

Medical Definition of ELECTRODE

: a conductor used to establish electrical contact with a nonmetallic part of a circuit

electrode

noun    (Concise Encyclopedia)

Electric conductor, usually metal, used as one of two terminals to conduct electric current through a conducting medium. A simple voltaic cell, or battery, consists of two electrodes, usually one zinc and one copper, immersed in an electrolytic solution (see electrolyte). When a chemical reaction occurs in the solution, electrons gather on the zinc electrode, or cathode, which becomes negatively charged. At the same time, electrons are drawn from the copper electrode, the anode, giving it a positive charge. The difference in charge sets up a potential difference, or voltage, between the two electrodes. When they are connected by a conducting wire, electrons flow from the cathode to the anode, producing a current.

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