Meaning of magnetosheath

mag•ne•to•sheath

Pronunciation: (mag-nē'tu-shēth"), [key]
— n. Astron.
  1. the region between the magnetopause of the earth or of some other planet and the shock front caused by the solar wind.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.