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
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
Multiple kinds of observations from a variety of instruments led groups to a rare phenomenon: a white dwarf tightly orbiting a red dwarf every 125 minutes.
—Paul Smaglik, Discover Magazine, 12 Mar. 2025
Based on the fact that the typical star in the Milky Way is considerably smaller than the Sun, the researchers assume a red dwarf, which produces a planet with a mass about 1.3 times that of Earth.
—John Timmer, ArsTechnica, 25 Apr. 2025
Here's why the debate continues — Earth-size planet discovered around cool red dwarf star shares its name with a biscuit
The team will now continue to use KMTNet and gravitational lensing to hunt for lensing planetary systems in an attempt to discover more super-Earths in wide orbits.
—Robert Lea, Space.com, 24 Apr. 2025
See All Example Sentences for red dwarf
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Tom Metcalfe, Scientific American, 17 Mar. 2025
Multiple kinds of observations from a variety of instruments led groups to a rare phenomenon: a white dwarf tightly orbiting a red dwarf every 125 minutes.
—Paul Smaglik, Discover Magazine, 12 Mar. 2025
Based on the fact that the typical star in the Milky Way is considerably smaller than the Sun, the researchers assume a red dwarf, which produces a planet with a mass about 1.3 times that of Earth.
—John Timmer, ArsTechnica, 25 Apr. 2025
Here's why the debate continues — Earth-size planet discovered around cool red dwarf star shares its name with a biscuit
The team will now continue to use KMTNet and gravitational lensing to hunt for lensing planetary systems in an attempt to discover more super-Earths in wide orbits.
—Robert Lea, Space.com, 24 Apr. 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 May. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share