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.
This characteristic makes sapphire an ideal surface on which to propagate electromagnetic radiation. — IEEE Spectrum, 24 June 2021 This high-tech garment completely blocks electromagnetic radiation, infrared detection and bacteria, effectively shielding the entire body from unwanted digital intrusions. — Kurt Knutsson, Cyberguy Report, Fox News, 17 Feb. 2025 All electromagnetic radiation has a wavelength and a frequency. — Robert Lea, Space.com, 12 Feb. 2025 Light is radiation visible to the human eye Light is energy called electromagnetic radiation. — Michael J. Murdoch, The Conversation, 3 Feb. 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

Rhymes for electromagnetic radiation

See All Rhymes for electromagnetic radiation

Browse Nearby Words

electromagnetic pulse
electromagnetic radiation
electromagnetics
See all Nearby Words

Cite this Entry

“Electromagnetic radiation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electromagnetic%20radiation. Accessed 31 Mar. 2025.

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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

Britannica.com: Encyclopedia article about electromagnetic radiation

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