electrode

Meanings

1. 1
   noun

   A conductor through which electric current enters or leaves a device, liquid, or circuit.

   The nurse attached the electrodes to his chest to record his heartbeat.

2. 2
   noun

   A part of a semiconductor device that collects or releases electric charge.

   Each transistor has electrodes that control the flow of current.

Coined by British scientist Michael Faraday in 1833, first used in his Diary (laboratory notebook) from the Ancient Greek words ἤλεκτρον (ḗlektron, “amber”) (from which the word electricity is derived) and ὁδός (hodós, “way”). By surface analysis, electro- + -ode

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