Van Allen Belt Definition
văn ălən
noun
Either of two toroidal zones containing high-energy ionized particles trapped in Earth's magnetic field and surrounding the planet, beginning at an altitude of about 800 kilometers (500 miles) and extending tens of thousands of kilometers into space.
American Heritage
Alternative term for Van Allen radiation belt.
Wiktionary
Other Word Forms of Van Allen Belt
Noun
Singular:
Van Allen belt
Plural:
van-allen-beltsOrigin of Van Allen Belt
After James Alfred Van Allen (1914–2006), American physicist
From American Heritage Dictionary of the English Language, 5th Edition
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