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black light

noun

  1. invisible infrared or ultraviolet light.


black light

noun

  1. 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


black light

  1. Invisible ultraviolet radiation. Black light causes certain fluorescent materials to emit visible light.


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Word History and Origins

Origin of black light1

First recorded in 1925–30

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