Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • 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

a timid, meek, or unassertive person

Get Word of the Day daily email!