diode

noun

di·​ode ˈdī-ˌōd How to pronounce diode (audio)
: an electronic device that has two electrodes or terminals and is used especially as a rectifier

Examples of diode in a Sentence

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The Ghoul, in possession of the cold fusion diode, uses it to power New Vegas, thus awakening the digital House. Randall Colburn, Entertainment Weekly, 4 Feb. 2026 Single molecules could outperform silicon chips Electrons naturally flow more easily in one direction than the other, a property that could let a single molecule act like a tiny diode. Bojan Stojkovski, Interesting Engineering, 31 Jan. 2026 My blue diode laser cutter isn't that fast, not even on cardstock. New Atlas, 29 Jan. 2026 To achieve this, the company used RGB tech that allows the microscopic red, green and blue diodes to generate color independently. Prakhar Khanna, Forbes.com, 5 Jan. 2026 See All Example Sentences for diode

Word History

Etymology

di- + -ode

Note: The term was originated by the British physicist William Henry Eccles (1875-1966) in the journal The Electrician, vol. 82, no.16 (April 18, 1919), p. 475.

First Known Use

1919, in the meaning defined above

Time Traveler
The first known use of diode was in 1919

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Cite this Entry

“Diode.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diode. Accessed 15 Feb. 2026.

Kids Definition

diode

noun
di·​ode ˈdī-ˌōd How to pronounce diode (audio)
: an electronic device with two electrodes that is used especially for changing alternating current into direct current

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