free-electron laser

free-elec·​tron laser | \ ˈfrē-i-ˈlek-ˌträn- How to pronounce free-electron laser (audio) \

Definition of free-electron laser

: a laser that can be tuned over a wide range of frequencies and that produces electromagnetic radiation by the motion of electrons moving at relativistic velocities in a magnetic field

First Known Use of free-electron laser

1978, in the meaning defined above

Keep scrolling for more

Learn More about free-electron laser

Time Traveler for free-electron laser

Time Traveler

The first known use of free-electron laser was in 1978

See more words from the same year

Statistics for free-electron laser

Cite this Entry

“Free-electron laser.” Dictionary, Merriam-Webster, Accessed 20 Sep. 2020.

More from Merriam-Webster on free-electron laser Encyclopedia article about free-electron laser

Comments on free-electron laser

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


Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

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

Love words? Need even more definitions?

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