electromagnetic radiation

noun

: energy in the form of electromagnetic waves
also : a series of electromagnetic waves

Examples of electromagnetic radiation 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.
Solar flares are powerful explosions from the sun that release intense bursts of electromagnetic radiation at the speed of light, including X-rays and ultraviolet light. Daisy Dobrijevic, Space.com, 24 Apr. 2026 Solar flares release bursts of electromagnetic radiation, including X-rays and ultraviolet light. Neetika Walter, Interesting Engineering, 24 Apr. 2026 Critics built a website that argued, among other things, that the project would unleash dangerous electromagnetic radiation. Anna Clark, ProPublica, 24 Apr. 2026 That gravitational radiation is similar to conventional, electromagnetic radiation in many ways, but different in a few profound ones. Big Think, 3 Apr. 2026 See All Example Sentences for electromagnetic radiation

Word History

First Known Use

1891, in the meaning defined above

Time Traveler
The first known use of electromagnetic radiation was in 1891

Browse Nearby Words

Cite this Entry

“Electromagnetic radiation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electromagnetic%20radiation. Accessed 28 Apr. 2026.

Kids Definition

electromagnetic radiation

noun
: energy in the form of electromagnetic waves
also : a series of electromagnetic waves

Medical Definition

electromagnetic radiation

noun
: a series of electromagnetic waves

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