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Meaning of pre-main-sequence star | Babel Free

Noun CEFR B2

Definitions

A star in the stage when it has not yet reached the main sequence.

CEFR level

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

pre-med pre-moderation pre-mortem pre-mortuary science pre-Nectarian pre-nut

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