Etymology
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electrode (n.)

"one of the two ends of an open electrical circuit," 1834, coined by English physicist and chemist Michael Faraday from electro- + Greek hodos "a way, path, track, road" (a word of uncertain origin; see Exodus) on the same pattern as anode, cathode.

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Definitions of electrode

electrode (n.)
a conductor used to make electrical contact with some part of a circuit;
From wordnet.princeton.edu