electrode

American  

[ih-lek-trohd] / ɪˈlɛk troʊd /

noun

Electricity.

1. a conductor, not necessarily metallic, through which a current enters or leaves a nonmetallic medium, as an electrolytic cell, arc generator, vacuum tube, or gaseous discharge tube.

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electrode British  

/ ɪˈlɛktrəʊd /

noun

1. a conductor through which an electric current enters or leaves an electrolyte, an electric arc, or an electronic valve or tube

2. an element in a semiconducting device that emits, collects, or controls the movement of electrons or holes

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electrode Scientific  

/ ĭ-lĕk′trōd′ /

1. A conductor through which an electric current enters or leaves a substance (or a vacuum) whose electrical characteristics are being measured, used, or manipulated. Electrodes can be used to detect electrical activity such as brain waves. Terminal points in electrical components such as transistors, diodes, and batteries are electrodes.

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Other Word Forms

• interelectrode
  noun

Etymology

Origin of electrode

First recorded in 1825–35; electr- + -ode ²

Example Sentences

Scientists are now developing advanced electrode contact lenses capable of monitoring corneal shape, hydration, and transparency during treatment.

From Science Daily • May 28, 2026

The process is controlled by a gate electrode, which must be separated from the active material by an insulating layer.

From Science Daily • May 9, 2026

Eventually, they reach the bottom electrode, creating a permanent connection that short-circuits the device and leaves it stuck in the on state.

From Science Daily • Apr. 7, 2026

Sheets of copper and aluminum go through machines that coat electrode slurry.

From The Wall Street Journal • Mar. 24, 2026

The electrode apparently burst from the strap holding it in place.

From "Just Mercy" by Bryan Stevenson