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Pronunciation varies by accent · noun
(astronomy) The region at which tubes of magnetic field lines reach the surface of the photosphere to form coronal loops..
Use footpoint when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Footpoint means (astronomy) The region at which tubes of magnetic field lines reach the surface of the photosphere to form coronal loops..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use footpoint where its definition matches the intended context.
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