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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That’s because well more than half of the universe’s stars are tiny, cool red dwarfs, dim bulbs with half to less than 10 percent of the sun’s mass.
—
Phil Plait, Scientific American, 20 Mar. 2026
Located around 40 light-years from Earth, TRAPPIST-1 d, e, f, and g all orbit their red dwarf star at distances that hypothetically could support liquid water.
—Andrew Paul, Popular Science, 19 Mar. 2026
The research team, led by Yilen Gómez Maqueo Chew of the National Autonomous University of Mexico, detected a transit signal in the light curve of the star TOI-1080, an inactive M4V-type red dwarf.
—Bojan Stojkovski, Interesting Engineering, 16 Mar. 2026
The only stars that will remain after that will be the lowest-mass red dwarf stars.
—Big Think, 13 Mar. 2026
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Phil Plait, Scientific American, 20 Mar. 2026
Located around 40 light-years from Earth, TRAPPIST-1 d, e, f, and g all orbit their red dwarf star at distances that hypothetically could support liquid water.
—Andrew Paul, Popular Science, 19 Mar. 2026
The research team, led by Yilen Gómez Maqueo Chew of the National Autonomous University of Mexico, detected a transit signal in the light curve of the star TOI-1080, an inactive M4V-type red dwarf.
—Bojan Stojkovski, Interesting Engineering, 16 Mar. 2026
The only stars that will remain after that will be the lowest-mass red dwarf stars.
—Big Think, 13 Mar. 2026
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 2 Apr. 2026.
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