plasmasphere

plas ma sphere |ˈplazməˌsfir ˈplæzməsfɪər | ▶noun Astronomy the roughly toroidal region surrounding and thought to rotate with the earth (or another planet ) at latitudes away from the poles, containing a relatively dense plasma of low-energy electrons and protons.

plasmasphere

plasma |sphere |ˈplazməsfiːə | ▶noun Astronomy the roughly toroidal region surrounding and thought to rotate with the earth (or another planet ) at latitudes away from the poles, containing a relatively dense plasma of low-energy electrons and protons.