Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

luminescence

play
noun lu·mi·nes·cence \-ˈne-sən(t)s\

Simple Definition of luminescence

  • : the creation of light by processes that do not involve heat; also : the light created

Source: Merriam-Webster's Learner's Dictionary

Full Definition of luminescence

  1. :  the low-temperature emission of light (as by a chemical or physiological process); also :  light produced by luminescence

luminescent

play \-sənt\ adjective

Examples of luminescence in a sentence

  1. the luminescence of the watch

  2. <we could see inside the cave even without a flashlight because of the luminescence coming from some of the fungus on the walls>



Origin and Etymology of luminescence

International Scientific Vocabulary lumin- + -escence


First Known Use: 1889


Medical Dictionary

luminescence

play
noun lu·mi·nes·cence \ˌlü-mə-ˈnes-ən(t)s\

Medical Definition of luminescence

  1. :  the low-temperature emission of light produced especially by physiological processes (as in the firefly), by chemical action, by friction, or by electrical action; also :  light produced by luminescence

luminesce

\-ˈnes\play intransitive verb

luminesced

;

luminescing

luminescent

\-ənt\play adjective




Seen and Heard

What made you want to look up luminescence? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to criticize in a loud and angry way

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

confounded-person

Which is a synonym of indolent?

lazy melancholy philistine frenetic
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ