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
That is the result of the unusual characteristics of their tiny and cool host red dwarf star, which can mimic atmospheric signals that are already weak and hard to detect.
—
Sharmila Kuthunur, Space.com, 18 Dec. 2024
However, red dwarf stars have starspots and eruptions that interfere with measurements.
—Jamie Carter, Forbes, 16 Dec. 2024
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
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.
Sharmila Kuthunur, Space.com, 18 Dec. 2024
However, red dwarf stars have starspots and eruptions that interfere with measurements.
—Jamie Carter, Forbes, 16 Dec. 2024
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
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 2 Jan. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share