Search Result for "magnetosphere": 
Wordnet 3.0

NOUN (1)

1. 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;


The Collaborative International Dictionary of English v.0.48:

magnetosphere \mag*net"o*sphere\, n. 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. [WordNet 1.6]
WordNet (r) 3.0 (2006):

magnetosphere n 1: 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