UVB
Americannoun
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It provides broader spectrum protection than other ingredients, shielding skin from both UVA rays—which penetrate deep into the skin, causing premature aging—and UVB rays, which cause sunburns.
From The Wall Street Journal ● Jul. 3, 2026
Like sunlight, the lamps emit two different types of ultraviolet wavelengths: UVA, which are longer and penetrate more deeply into the skin, and UVB, which are shorter and more easily burn the outer layers.
From Los Angeles Times ● May 6, 2026
UVA and UVB refer to different wavelengths of radiation from the sun that enter the Earth's atmosphere.
From BBC ● Jun. 30, 2025
The first key insight is that ambient UVB emerges as a critical predictor of vitamin D status, even in a place like the UK, which receives relatively little sunlight.
From Science Daily ● May 2, 2024
Longer-wavelength UVA rays penetrate deeper into the skin than shorter-wavelength UVB rays, although both types are known to cause skin cancer.
From Scientific American ● Sep. 6, 2023
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
