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

Van Allen belt

play
noun Van Al·len belt \van-ˈa-lən-\

Definition of Van Allen belt

  1. :  a belt of intense radiation in the magnetosphere composed of energetic charged particles trapped by the earth's magnetic field; also :  a similar belt surrounding another planet



Origin of van allen belt

James A. Van Allen


First Known Use: 1958

Rhymes with van allen belt


Learn More about van allen belt


Seen and Heard

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

WORD OF THE DAY

February 8, 2016

to clear from accusation or blame

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

pince-nez spindrift kittly-benders duvet
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ