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Meaning of Alfven surface | Babel Free

Noun CEFR B2

Definitions

The outer edge of the corona. The boundary that separates a star's atmosphere from its exosphere (heliosphere, astrosphere), where Alfven waves transition into stellar wind (solar wind).

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

Alfvén wave Alfy ALG Alg. Alga algaculture

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