magnetopause.

The boundary between a magnetosphere and the surrounding plasma flow, usually the solar wind around a planet.

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Words that belong together

• cross the magnetopause
• the dayside magnetopause
• magnetopause motion

On the page

The probe crossed the magnetopause during a sudden increase in solar-wind pressure.

Its instruments recorded the magnetopause moving past the craft rather than the craft moving through a fixed shell.

Usage notes

Primary category: sci-fi. Forms: Singular magnetopause; plural magnetopauses. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.