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brown dwarf

Noun CEFR B2

Definitions

A starlike object that contracts to about the volume of Jupiter after its formation phase; its mass may range from several times that of Jupiter, such that it fuses deuterium, up to just below the threshold of sustained hydrogen fusion.

Equivalents

Españolenana marrón
Françaisnaine brune
DeutschBrauner Zwerg
12 more languages

Examples

“But none of those brown dwarfs were speeding along on a trajectory that would carry⟳ them out of the galaxy like⟳ “runaway” hypervelocity stars observed by astronomers in the last⟳ two decades.”

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

brown envelope journalism brown envelope syndrome brown eye brown falcon brown fat brown gargle

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