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
Recent Examples on the Web
That could point to the system of planets orbiting a type of small, dim star called a red dwarf.
—
Kiona N. Smith, Forbes.com, 11 July 2025
About 80,000 years ago a small red dwarf called Scholz’s star passed the sun at a distance of just 0.85 light-year.
—Phil Plait, Scientific American, 26 June 2025
Astronomers using the James Webb Space Telescope found a planet while observing Alpha Centauri, a system of three stars orbiting each other — binary stars Alpha Centauri A and B, along with the red dwarf star Proxima Centauri.
—Jamie Carter, Forbes.com, 9 Aug. 2025
And the star and its two companions, the slightly smaller Alpha Centauri B and the tiny red dwarf star Proxima Centauri, comprise the nearest stellar system to our own—just about four and a half light-years away.
—Meghan Bartels, Scientific American, 7 Aug. 2025
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Kiona N. Smith, Forbes.com, 11 July 2025
About 80,000 years ago a small red dwarf called Scholz’s star passed the sun at a distance of just 0.85 light-year.
—Phil Plait, Scientific American, 26 June 2025
Astronomers using the James Webb Space Telescope found a planet while observing Alpha Centauri, a system of three stars orbiting each other — binary stars Alpha Centauri A and B, along with the red dwarf star Proxima Centauri.
—Jamie Carter, Forbes.com, 9 Aug. 2025
And the star and its two companions, the slightly smaller Alpha Centauri B and the tiny red dwarf star Proxima Centauri, comprise the nearest stellar system to our own—just about four and a half light-years away.
—Meghan Bartels, Scientific American, 7 Aug. 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 4 Sep. 2025.
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