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.
Don't clutch your pearls too soon, because the electromagnetic radiation Tesla EVs emit is non-ionizing. Charles Singh, USA Today, 24 Sep. 2025 This means the light emitted from these larger accretion disks is in the ultraviolet region of the electromagnetic spectrum, while the electromagnetic radiation from the disks around neutron stars is in the form of X-rays, which are higher in energy. Robert Lea, Space.com, 18 Sep. 2025 The report also wants a closer look at the effects of electromagnetic radiation, the microbiome, and the root causes of autism. Philip Elliott, Time, 10 Sep. 2025 This strategy uses a radioisotope to produce a hot surface, and electromagnetic radiation from the hot surface produces electricity within a photovoltaic cell. IEEE Spectrum, 25 Aug. 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 29 Sep. 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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