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 caused when magnetic energy builds up in the sun's atmosphere and is released in an intense burst of electromagnetic radiation. Daisy Dobrijevic, Space.com, 16 June 2025 X-ray emission is high-energy electromagnetic radiation, which Earth’s atmosphere blocks. Jamie Carter, Forbes.com, 28 May 2025 The human eye perceives electromagnetic radiation (i.e. light) as different colors, depending on the length of the wave. Alex Tzelnic, Outside Online, 22 May 2025 That activity consists of eruptions of electromagnetic radiation, or solar flares, and coronal mass ejections, or bubbles of plasma that often burst along with solar flares. Ty Roush, Forbes, 6 Dec. 2024 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 24 Jun. 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

Last Updated: - Updated example sentences
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