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Pronunciation varies by accent · noun
The boundary between the Earth's magnetosphere and the sun's plasma..
Use magnetopause when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Magnetopause means The boundary between the Earth's magnetosphere and the sun's plasma..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use magnetopause where its definition matches the intended context.
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