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electromagnetic spectrum
noun
: the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light
Examples of electromagnetic spectrum in a Sentence
Recent Examples on the Web
Ultraviolet light, or UV light, is a type of electromagnetic radiation that lies between visible light and X-rays on the electromagnetic spectrum.
—Yaakov Katz, Newsweek, 17 Jan. 2025
This wavelength region on the electromagnetic spectrum is accessible by EHT in order to create the sharpest possible images, according to a paper the team recently published in the journal Astronomy & Astrophysics.
—Josh Dinner, Space.com, 12 Jan. 2025
With this constant competition on the electromagnetic spectrum, defense companies are getting creative about how their drones travel.
—Justin Ling, WIRED, 23 Dec. 2024
Today, the electromagnetic space is much more complicated: Different types of signals are broadcast straight across the electromagnetic spectrum, from radar to GPS and GLONASS, to cellular signals.
—Justin Ling, WIRED, 23 Dec. 2024
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Word History
First Known Use
1924, in the meaning defined above
Time Traveler
The first known use of electromagnetic spectrum was
in 1924
Dictionary Entries Near electromagnetic spectrum
Cite this Entry
“Electromagnetic spectrum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/electromagnetic%20spectrum. Accessed 1 Feb. 2025.
Kids Definition
electromagnetic spectrum
noun
: the entire range of wavelengths or frequencies of electromagnetic waves extending from gamma rays to the longest radio waves and including visible light
Medical Definition
electromagnetic spectrum
noun
: the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light
More from Merriam-Webster on electromagnetic spectrum
Britannica.com: Encyclopedia article about electromagnetic spectrum
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