Van Allen belt

noun
Van Al·​len belt | \ van-ˈa-lən- How to pronounce Van Allen belt (audio) \

Definition of Van Allen belt

: 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

First Known Use of Van Allen belt

1958, in the meaning defined above

History and Etymology for Van Allen belt

after James A. van allen, credited with discovery of the belt

Keep scrolling for more

Learn More about Van Allen belt

Time Traveler for Van Allen belt

Time Traveler

The first known use of Van Allen belt was in 1958

See more words from the same year

Statistics for Van Allen belt

Cite this Entry

“Van Allen belt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Van%20Allen%20belt. Accessed 7 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

More from Merriam-Webster on Van Allen belt

Britannica English: Translation of Van Allen belt for Arabic Speakers

Comments on Van Allen belt

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

Test Your Vocabulary

Who Knew?

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

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!