• synonyms


[ plaz-muh-sfeer ]
/ ˈplæz məˌsfɪər /

noun Astronomy.

a region of cool plasma surrounding the earth, extending 8000–25,000 miles (13,000–40,000 km) into space, and bounded by the plasmapause.

Nearby words

plasmalogen, plasmapause, plasmapheresis, plasmapheretic, plasmasol, plasmasphere, plasmatic, plasmid, plasmin, plasminogen, plasminogen activator

Origin of plasmasphere

First recorded in 1965–70; plasma + -sphere Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for plasmasphere

  • The plasmasphere of Eisberg differed from that of Earth in two ways.

    Unwise Child|Gordon Randall Garrett