Rayleigh scattering

noun

Ray·​leigh scattering ˈrā-lē- How to pronounce Rayleigh scattering (audio)
: scattering of light by particles small enough to render the effect selective so that different colors are deflected through different angles

Examples of Rayleigh scattering 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 happens because its light passes through more of Earth's atmosphere, which scatters away the shorter blue wavelengths and lets the longer red tones pass through, an effect known as Rayleigh scattering. Anthony Wood, Space.com, 9 Apr. 2026 This process — called Rayleigh scattering — scatters shorter-wavelength blue light and bends longer-wavelength red light toward the moon. Jamie Carter, Forbes.com, 21 Jan. 2026

Word History

Etymology

John W. S. Rayleigh

First Known Use

1925, in the meaning defined above

Time Traveler
The first known use of Rayleigh scattering was in 1925

Browse Nearby Words

Cite this Entry

“Rayleigh scattering.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Rayleigh%20scattering. Accessed 18 Apr. 2026.

More from Merriam-Webster on Rayleigh scattering

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster