Definition of plasmapause in US English:

plasmapause

noun

Astronomy
  • The outer limit of a plasmasphere, marked by a sudden change in plasma density.

    • ‘This provides an important comparison for remote sensing plasma mass densities particularly around the plasmapause.’
    • ‘This suggests that decrease of the radius of the plasmapause is mainly due to rapid and short decreases just after the onset of each substorms.’

Pronunciation

plasmapause

/ˈplazməˌpôz/