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 Gliese 12 b orbits a cool, red dwarf star and takes 12.8 days to complete an orbit. Anna Nordseth, Discover Magazine, 31 July 2024 The candidate stars are all red dwarfs, the most common type of star in our galaxy. Jacopo Prisco, CNN, 13 June 2024 The star, Proxima Centauri, is a tad nearer to Earth and is a red dwarf, the most common kind of star. Ann Finkbeiner, Scientific American, 22 Dec. 2016 Likely prevalent on Earth well before the advent of plant-type photosynthesis, such bacteria could be primed to thrive on planets that circle cooler red dwarf stars – the most common type in our galaxy. Eric Lagatta, USA TODAY, 22 Apr. 2024 See all Example Sentences for red dwarf 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'red dwarf.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of red dwarf was in 1926

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 19 Aug. 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

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