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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About the size of Saturn, the new world is circling a red dwarf star about 111 light-years away.
—
Alex Knapp, Forbes.com, 27 June 2025
But Proxima Centauri is a red dwarf star, with just a fraction of the sun's brightness and size.
—Paul Sutter, Space.com, 20 May 2025
The planet in question, imaginatively named K2-18b, is about two and a half times the size of Earth and orbits a red dwarf star.
—Alex Knapp, Forbes.com, 18 Apr. 2025
Discovered in 1916 by American astronomer Edward Emerson Barnard, Barnard’s Star is a small and slow-burning red dwarf classified by astronomers as an M-type star.
—Tom Metcalfe, Scientific American, 17 Mar. 2025
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Alex Knapp, Forbes.com, 27 June 2025
But Proxima Centauri is a red dwarf star, with just a fraction of the sun's brightness and size.
—Paul Sutter, Space.com, 20 May 2025
The planet in question, imaginatively named K2-18b, is about two and a half times the size of Earth and orbits a red dwarf star.
—Alex Knapp, Forbes.com, 18 Apr. 2025
Discovered in 1916 by American astronomer Edward Emerson Barnard, Barnard’s Star is a small and slow-burning red dwarf classified by astronomers as an M-type star.
—Tom Metcalfe, Scientific American, 17 Mar. 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 13 Jul. 2025.
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