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

black light

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

Word History and Origins

Origin of black light¹

First recorded in 1925–30

Example Sentences

The Upper East Side location also boasts a black light and disco ball.

From The Daily Beast

Does it stand the test of time, or is it just an effect, like the black light?

From The Daily Beast

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

From Project Gutenberg

In the black light, luminous fingers suddenly showed themselves.

From Project Gutenberg

I bought the Emma Goldman poster on the way home and stuck it up over my desk, tacked over a vintage black-light poster.

From Project Gutenberg

We use black light almost exclusively or activated phosphorous such as on the sheaths of the nerve cables.

From Project Gutenberg

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

From Project Gutenberg