electromagnetic wave

noun

: one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays

Examples of electromagnetic wave in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Nokia is developing radio sensing networks that use ambient signals like electromagnetic waves, temperature, and motion to generate real-time contextual awareness. Cathy Hackl, Forbes.com, 12 June 2025 The basic science is the same – electromagnetic waves cause electrons to oscillate, creating heat. Terence Musho, The Conversation, 28 May 2025 It was sent out into the universe as an electromagnetic wave at the speed of light. Robin Raven, Forbes.com, 31 May 2025 The audio of the performance will be converted into an electromagnetic wave. Rebecca Hersher, NPR, 26 May 2025 See All Example Sentences for electromagnetic wave

Word History

First Known Use

1882, in the meaning defined above

Time Traveler
The first known use of electromagnetic wave was in 1882

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Cite this Entry

“Electromagnetic wave.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electromagnetic%20wave. Accessed 18 Jul. 2025.

Kids Definition

electromagnetic wave

noun
: a wave (as a radio wave, wave of visible light, or X-ray) that consists of an associated electric and magnetic effect and travels at the speed of light

Medical Definition

electromagnetic wave

noun
: one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays

More from Merriam-Webster on electromagnetic wave

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