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black light

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noun

invisible infrared or ultraviolet light.

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Origin of black light

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for black light

black light

noun

the invisible electromagnetic radiation in the ultraviolet and infrared regions of the spectrum
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for black light

black light

Invisible ultraviolet radiation. Black light causes certain fluorescent materials to emit visible light.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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