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

Recent Examples on the Web
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Last November, the UK's Advertising Standards Authority banned ads from for at home light emitting diode (LED) face masks marketed to consumers. Jesse Pines, Forbes.com, 28 May 2026 However, that base price only gets you a version of the machine with a 10W laser diode capable of cutting over 300 thinner materials. Andrew Liszewski, The Verge, 27 May 2026 The 7 Color Photon Rejuvenation Super LED Mask combines 352 high-quality LED diodes with advanced technologies, including Near-Infrared (NIR), to deliver a powerful, non-invasive skin care experience. Tory Johnson, ABC News, 23 Apr. 2026 Technical innovation for target development The technical scope of the CRADA includes the research, development, and prototyping of advanced optical materials and semiconductor laser diodes. Aman Tripathi, Interesting Engineering, 22 Apr. 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 3 Jun. 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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