black light



invisible infrared or ultraviolet light.

Origin of black light

First recorded in 1925–30 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for black light

Historical Examples of black light

  • Gangs of air conditioners were dressed blue, electricians white, black-light specialists in purple, radionics men in orange.

    The Brain

    Alexander Blade

  • They had been allowed to force their way into the sealed level and were there caught in a black-light trap.


    James H Schmitz

British Dictionary definitions for black light

black light


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

Science 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.