light quantum

noun

Definition of light quantum 

: photon especially : one of luminous radiation

First Known Use of light quantum

1910, in the meaning defined above

Keep scrolling for more

Learn More about light quantum

Share light quantum

Statistics for light quantum

Look-up Popularity

Time Traveler for light quantum

The first known use of light quantum was in 1910

See more words from the same year

More from Merriam-Webster on light quantum

Britannica.com: Encyclopedia article about light quantum

Comments on light quantum

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

WORD OF THE DAY

exaggeratedly or childishly emotional

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Add Diction

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!