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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
Plastics, specifically, have special attributes in the shortwave infrared (SWIR) electromagnetic spectrum that aren’t present in sand or other organic debris.
—Mack Degeurin, Popular Science, 30 Oct. 2024
Light and Color Visible light is a narrow band of the electromagnetic spectrum with wavelengths from 700 to 380 nm.
—Rhett Allain, WIRED, 11 Oct. 2024
The cosmos is filled with galaxies that glow across the electromagnetic spectrum, creating the ultimate dark-sky limit.
—Phil Plait, Scientific American, 4 Oct. 2024
Duncan’s aversions, however, are not limited to the electromagnetic spectrum.
—Evan Malmgren, Harper's Magazine, 21 Aug. 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 24 Nov. 2024.
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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