
heliosheath The region of the heliosphere beyond the termination shock where the wind is slowed, compressed, and made turbulent by its interaction with the interstellar medium.
Found on
http://www.wordinfo.info/words/index/info/view_unit/963/4

A vast, turbulent expanse where the solar wind piles up as it presses outward against interstellar matter.A vast expanse where the Sun's influence ends and particles blown off its surface crash into the thin gas that drifts between the stars.
Found on
https://www.encyclo.co.uk/local/20687
No exact match found.