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A region surrounding a planet, star, or other body, in which the body's magnetic field traps charged particles and dominates their behavior.

mag·ne′to·spher′ic (-sfîr′ĭk, -sfĕr′-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Physical Geography) 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 and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(mægˈni təˌsfɪər)

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.
2. such a region of another planet.
mag•ne`to•spher′ic (-ˈsfɛr ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


The region near the planet possessing a magnetic field, which determines the motion of the charged particles in this region. Earth, Saturn, Jupiter, Uranus, and Mercury are the solar system planets known to have magnetospheres.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.magnetosphere - the magnetic field of a planetmagnetosphere - the magnetic field of a planet; the volume around the planet in which charged particles are subject more to the planet's magnetic field than to the solar magnetic field
magnetic field, magnetic flux, flux - the lines of force surrounding a permanent magnet or a moving charged particle
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[mægˈniːtəʊˌsfɪəʳ] Nmagnetosfera f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
References in periodicals archive ?
ENPNewswire-July 31, 2019--Airbus brings a SMILE to ESA; European-Chinese satellite will study the interaction between the solar wind and Earth's magnetosphere
She returned to the University of Leicester in 2011 as a Research Associate, working on the European Union ECLAT project and was awarded a Leverhulme Research Fellowship in 2014 for a project entitled Rough Winds do Shake the Magnetosphere of Mercury.
Auroras are produced by glowing oxygen and nitrogen atoms in Earth's upper atmosphere, excited by charged particles streaming in from the near-Earth magnetic environment called the magnetosphere. Scientists didn't know if STEVE was a kind of aurora, but a 2018 study found its glow is not due to charged particles raining down into Earth's upper atmosphere.
On Jupiter, the electrons producing auroras come from the magnetosphere, a layer of plasma and magnetic field surrounding the planet.
It was the first satellite dedicated to observing the magnetosphere of the Earth and producing global images of plasma in the inner magnetosphere.
SHIELDS Space Weather Platform predicts space weather before it can have an effect on satellites, serving as an effective line of defense for communication, navigation and scientific satellites orbiting the Earths magnetosphere. SHIELDS--Space Hazards Induced near Earth by Large, Dynamic Storms--employs multiscale modeling and assimilates satellite observational data to achieve an unprecedented specification of the near-earth space environment.
PolarNOX was to be followed with the launch of two additional missions that will study the interaction of the solar wind, the magnetosphere, Earth's upper atmosphere and the structure of the resulting aurora.
Space scientists at US universities and national laboratories explore conditions on the Sun and in the solar wind, magnetosphere, ionosphere, and thermosphere that can influence the performance and reliability of space-born and ground-based technological systems, and can endanger human life or health.
Juno is the first mission dedicated to the study of the planet's interior to learn more about its origins, structure, atmosphere and magnetosphere. Aerojet Rocketdyne provided 26 propulsion devices and six pressurant tanks aboard the United Launch Alliance (ULA) Atlas V rocket during its 2011 launch, as well as 12 propulsion devices on the spacecraft during its five-year journey through space.
Additionally, we will probe the structure of the full magnetosphere and will also study how it varies with time.
Strong winds in particular, can interfere with Jupiter's magnetic field -- or magnetosphere. The study found that these collisions are behind Jupiter's high-energy X-ray Northern Lights, which span over an area bigger than the Earth's surface.