brown dwarf
noun
: 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
Examples of brown dwarf in a Sentence
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The new brown dwarfs also exhibit signals from an unidentified hydrocarbon, a chemical compound composed solely of hydrogen and carbon atoms.
—
Robert Lea, Space.com, 12 June 2025
However, in this case, there are two brown dwarfs involved here.
—Andrew Paul, Popular Science, 16 Apr. 2025
Evidence for a polar circumbinary exoplanet orbiting a pair of eclipsing brown dwarfs.
—Thomas G. Moukawsher, MSNBC Newsweek, 17 Apr. 2025
In general, middling objects too massive to be planets but too lightweight to be stars are called brown dwarfs.
—Phil Plait, Scientific American, 10 Apr. 2025
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Robert Lea, Space.com, 12 June 2025
However, in this case, there are two brown dwarfs involved here.
—Andrew Paul, Popular Science, 16 Apr. 2025
Evidence for a polar circumbinary exoplanet orbiting a pair of eclipsing brown dwarfs.
—Thomas G. Moukawsher, MSNBC Newsweek, 17 Apr. 2025
In general, middling objects too massive to be planets but too lightweight to be stars are called brown dwarfs.
—Phil Plait, Scientific American, 10 Apr. 2025
See All Example Sentences for brown dwarf
Cite this Entry
“Brown dwarf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brown%20dwarf. Accessed 1 Jul. 2025.
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