Definition of brown dwarf
:a celestial object that is much smaller than a normal star and has insufficient mass to sustain nuclear fusion but that is hot enough to radiate energy especially at infrared wavelengths
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brown dwarf
noun
From the M-W Editors
First Known Use of brown dwarf
1975
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Nglish: Translation of brown dwarf for Spanish speakers Britannica.com: Encyclopedia article about brown dwarf
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