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
This galactic speed demon appears to have a red dwarf star smaller and dimmer than our sun.
—
Jonathan O'Callaghan, Scientific American, 30 Oct. 2024
The smallest red dwarfs, with masses barely bigger than a tenth of the mass of the Sun, can burn for trillions of years.
—Paul Sutter, Ars Technica, 16 Apr. 2024
Too Hot For Life Barnard’s star is a red dwarf star, a low-mass, cool star that comprises about 70% of all the stars in the Milky Way.
—Jamie Carter, Forbes, 1 Oct. 2024
Orbiting a red dwarf star, which typically has a longer lifespan than larger stars like our Sun, Kepler-186f might benefit from stable conditions for billions of years, giving life more time to potentially develop.
—Anna Nordseth, Discover Magazine, 31 July 2024
See all Example Sentences for red dwarf 
These examples are automatically compiled from online sources to
illustrate current usage. Opinions expressed in the examples do not represent those of
Merriam-Webster or its editors.
Send us feedback
about these examples.
Jonathan O'Callaghan, Scientific American, 30 Oct. 2024
The smallest red dwarfs, with masses barely bigger than a tenth of the mass of the Sun, can burn for trillions of years.
—Paul Sutter, Ars Technica, 16 Apr. 2024
Too Hot For Life Barnard’s star is a red dwarf star, a low-mass, cool star that comprises about 70% of all the stars in the Milky Way.
—Jamie Carter, Forbes, 1 Oct. 2024
Orbiting a red dwarf star, which typically has a longer lifespan than larger stars like our Sun, Kepler-186f might benefit from stable conditions for billions of years, giving life more time to potentially develop.
—Anna Nordseth, Discover Magazine, 31 July 2024
See all Example Sentences for red dwarf
Dictionary Entries Near red dwarf
Cite this Entry
“Red dwarf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red%20dwarf. Accessed 14 Nov. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share