wavelength

noun

wave·​length ˈwāv-ˌleŋ(k)th How to pronounce wavelength (audio)
1
: the distance in the line of advance of a wave from any one point to the next point of corresponding phase
2
: a particular course or line of thought especially as related to mutual understanding
two people on different wavelengths

Examples of wavelength in a Sentence

Light and sound have different wavelengths.
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.
So these iridescent nanocrystals can reflect any wavelength of light and color in their environment. Maximilíano Durón, ARTnews.com, 3 Mar. 2025 Because the universe is constantly expanding in all directions, a wavelength of light traveling through it is literally stretched. Meghan Bartels, Scientific American, 28 Feb. 2025 The sun, during the day, shines a full spectrum of light, and it’s centered around the blue wavelengths. Allie Volpe, Vox, 25 Feb. 2025 However, during an eclipse, the longer wavelengths of light — reddish and orange light — are bent or refracted toward the moon. Jamie Carter, Forbes, 4 Mar. 2025 See All Example Sentences for wavelength

Word History

First Known Use

1850, in the meaning defined at sense 1

Time Traveler
The first known use of wavelength was in 1850

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Cite this Entry

“Wavelength.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/wavelength. Accessed 13 Mar. 2025.

Kids Definition

wavelength

noun
wave·​length ˈwāv-ˌleŋ(k)th How to pronounce wavelength (audio)
1
: the distance (as from crest to crest) in the line of advance of a wave from any one point to the next corresponding point
2
: a certain line of thought or behavior that reveals a common understanding
coworkers who are on the same wavelength

Medical Definition

wavelength

noun
wave·​length -ˌleŋ(k)th How to pronounce wavelength (audio)
: the distance in the line of advance of a wave from any one point to the next point of corresponding phase
symbol λ

More from Merriam-Webster on wavelength

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