red dwarf
noun
: a star having substantially lower surface temperature, intrinsic luminosity, mass, and size than the sun
Examples of red dwarf in a Sentence
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While stars of all colors and masses — from blue giants to red dwarfs — will burn through their fuel and die, the brown dwarfs of the Universe will persist.
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Big Think, 20 Feb. 2026
Stars that are cooler and fainter can live far longer; the dimmest red dwarf stars theoretically can live on for as much as a trillion years or more.
—Joe Rao, Space.com, 8 Feb. 2026
The star, named StKM 1-1262, is a red dwarf star about 130 light-years from Earth.
—Ashley Strickland, CNN Money, 16 Nov. 2025
With help from the ESA’s XMM-Newton space observatory, the team traced the energy waves to a red dwarf located around 130 light-years away from Earth known as StKM 1-1262.
—Andrew Paul, Popular Science, 12 Nov. 2025
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Big Think, 20 Feb. 2026
Stars that are cooler and fainter can live far longer; the dimmest red dwarf stars theoretically can live on for as much as a trillion years or more.
—Joe Rao, Space.com, 8 Feb. 2026
The star, named StKM 1-1262, is a red dwarf star about 130 light-years from Earth.
—Ashley Strickland, CNN Money, 16 Nov. 2025
With help from the ESA’s XMM-Newton space observatory, the team traced the energy waves to a red dwarf located around 130 light-years away from Earth known as StKM 1-1262.
—Andrew Paul, Popular Science, 12 Nov. 2025
See All Example Sentences for red dwarf
Cite this Entry
“Red dwarf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red%20dwarf. Accessed 20 Feb. 2026.
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