-
- To save this word, you'll need to log in.
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
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.
Word History
First Known Use
1926, in the meaning defined above
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 16 Dec. 2024.
Kids Definition
red dwarf
noun
: a star having much lower surface temperature, brightness, mass, and size than the sun
More from Merriam-Webster on red dwarf
Thesaurus: All synonyms and antonyms for red dwarf
Love words? Need even more definitions?
Merriam-Webster unabridged
Share