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

See Examples For:

white light

The molecules are small and water-soluble, and they respond to common visible or white light, including normal indoor illumination and daylight, without the need for unusually intense or specialized light sources.

From Science Daily ● Aug. 28, 2026

Another feature it is exploring would allow the glasses to constantly capture audio and visuals without notifying those around the user via the white light, according to people familiar with the project.

From The Wall Street Journal ● Jul. 14, 2026

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

On Jan. 19, Edison crews also briefly reenergized the transmission lines over Eaton Canyon and “observed a small flash of white light upon each re-energization.”

From Los Angeles Times ● May 7, 2025

He was now in the middle of the tent, illuminated as though he were standing over some invisible white light.

From "Beasts of Prey" by Ayana Gray