Try Our Apps
Dictionary.com

follow Dictionary.com

The Best Internet Slang

black light

noun
1.
invisible infrared or ultraviolet light.
Origin of black light
1925-1930
First recorded in 1925-30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for black light
Contemporary Examples
Historical Examples
  • Because there is not a black light, is there therefore no night?

    The Quest Frederik van Eeden
  • I headed back the way we had come until I was sure they couldn't hear me or see me with their black light pencils.

    The Old Martians Roger Phillips Graham
  • I had counted on watching Herb by his own black light pencil, and he was working in darkness.

    The Old Martians Roger Phillips Graham
  • A still picture of the scene the black light disclosed etched itself into my mind.

    The Old Martians Roger Phillips Graham
  • In her colorless face those wonderful openings of black light seemed to look through and beyond us.

  • The broad beam of black light from the tip of the nearest tower caught the beast head on.

  • No visible light came from those bulbs—only "black light" as it is called.

  • In the black light, luminous fingers suddenly showed themselves.

British Dictionary definitions for black 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
Cite This Source
black light in Science
black light  
Invisible ultraviolet radiation. Black light causes certain fluorescent materials to emit visible light.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for black light

Few English speakers likely know this word

Word Value for black

13
16
Scrabble Words With Friends

Nearby words for black light