white light

American  

noun

1. light perceived by the eye as having the same color as sunlight at noon.

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white light British  

noun

1. light that contains all the wavelengths of visible light at approximately equal intensities, as in sunlight or the light from white-hot solids

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white light Scientific  

1. Electromagnetic radiation composed of a fairly even distribution of all of the frequencies in the visible range of the spectrum, appearing white to the eye. Light from the Sun is nearly perfect white light, although the Sun does not itself appear white when viewed on Earth due to the scattering of light with frequencies in the blue range by the atmosphere, leaving the Sun with a yellow color.

2. Light that appears white to the eye, composed of some combination of light with frequencies in the red, blue, and green parts of the spectrum.

3. See also color

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Example Sentences

A woman in her 20s in Tehran said there were explosions "every few hours" and a strange white light in the sky that seemed different than nights before.

From BBC • Mar. 10, 2026

A video offers new evidence suggesting the massive Eaton fire may have been ignited at a Southern California Edison transmission tower just moments after flashes of blue and white light flared near the electrical equipment.

From Los Angeles Times • Jan. 26, 2025

"I am dead. Yet I live," Palmer says back to him, slowly moving her hand in front of her face to remove it like a mask, revealing a bright white light that washes over Cooper.

From Salon • Jan. 22, 2025

The store, illuminated by the white light of the gas pumps, was as banal an institution as one could find in this part of Maine.

From Slate • Dec. 4, 2024

Though her wrists were cinched with twine, she cupped her hands together; they bulged and pulsed, as if she had a fidgety mouse trapped between her palms, and white light leaked between her fingers.

From "The Last Last-Day-of-Summer" by Lamar Giles