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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.


(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


(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.


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.
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


[mægˈniːtəʊˌsfɪəʳ] Nmagnetosfera f
References in periodicals archive ?
The experiment is used to study both magnetospheric physics of the Earth and other planets, but also fundamental plasma physics that could one day lead to fusion using so-called "advanced fuels." The experiment only recently came into operation but has already achieved one of its principal goals: the formation of a peaked density profile due to the formation of a low frequency turbulent pinch, in accordance with theory.
In order to investigate the degree to which results from one set of experiments or observations are actually applicable to other environments, researchers in magnetospheric physics, solar physics, and astrophysics consider the significance of findings about particle acceleration in the laboratory, in Earth's magnetosphere, in the solar wind, at the Sun, and beyond in the astrophysical plasma.
Also, we provide the time variations of these components for the people dealing with sun-weather relationships, as we are interested mainly in geomagnetism and magnetospheric physics.