magnetospheric

magnetosphere

[mag-nee-tuh-sfeer]
noun Astronomy.
1.
the outer region of the earth's ionosphere, where the earth's magnetic field controls the motion of charged particles, as in the Van Allen belts. Compare magnetopause.
2.
such a region of another planet: Jupiter's magnetosphere.

Origin:
1955–60; magneto- + -sphere

magnetospheric [mag-nee-tuh-sfer-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To magnetospheric
Collins
World English Dictionary
magnetosphere (mæɡˈniːtəʊˌsfɪə)
 
n
the region surrounding a planet, such as the earth, in which the behaviour of charged particles is controlled by the planet's magnetic field
 
magnetospheric
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

magnetosphere
1959, from comb. form of magnet + sphere.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
magnetosphere   (māg-nē'tō-sfîr')  Pronunciation Key 
A highly asymmetrical region surrounding the Earth, beginning about 100 km (62 mi) above the surface on the side of the Earth facing the Sun and extending hundreds of thousands of kilometers into space on the opposite side. In this region the Earth's magnetic field exerts a significant influence on any charged particles that encounter it. The magnetosphere deflects most of the charged particles in the solar wind, but also traps and deflects some of these particles toward the Earth's magnetic poles, causing magnetic storms and auroras.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature