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
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The large towers and moving blades on wind towers reflect electromagnetic radiation, which can cause interference for radar systems, according to the Department of Energy. Julia Jacobo, ABC News, 23 Dec. 2025 However, a team of researchers has now shown a unique solution in the form of an ultra-thin, flexible, see-through film that can block almost all unwanted electromagnetic radiation while remaining light, transparent, and scalable for real-world use. Rupendra Brahambhatt, Interesting Engineering, 21 Dec. 2025 These extreme dead stars then spiral together and merge, creating a scream of gravitational waves and a blast of electromagnetic radiation. Robert Lea, Space.com, 19 Dec. 2025 The telescope is designed to pick up a type of intense electromagnetic radiation known as gamma rays. Denise Chow, NBC news, 25 Nov. 2025 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 31 Dec. 2025.

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

More from Merriam-Webster on electromagnetic radiation

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