red dwarf


Definition of red dwarf

: 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 Or just being a super-Earth that orbits a red dwarf. Joshua Hawkins, BGR, 5 Aug. 2022 Scientists have discovered a Super-Earth orbiting a red dwarf star. Joshua Hawkins, BGR, 5 Aug. 2022 However, those red dwarf stars are often 100 times heavier than Jupiter. Joshua Hawkins, BGR, 20 July 2022 Yet could there be enough normal unseen matter —- in the form of neutron stars, white dwarfs or even very faint red dwarf stars, for instance; that could explain spiral galaxy formation without exotic dark matter? Bruce Dorminey, Forbes, 15 June 2022 The most celebrated multi-planet system to date is located just 39 light years from Earth, where seven planets orbit the red dwarf known as Trappist-1. Jeffrey Kluger, Time, 25 Mar. 2022 Typically, the mythical red dwarf that has taunted Detroit since its founding appears at the event in devilish flair, with horns and an eerie grin, to cause trouble. Elissa Welle, Detroit Free Press, 21 Mar. 2022 Since Proxima Centauri is a dim red dwarf star, however, its habitable zone is quite close as well, with Proxima Centauri b being solidly within it. John Timmer, Ars Technica, 10 Feb. 2022 Scientists discovered the hellish planet orbiting around a small red dwarf star named GJ 367. Joshua Hawkins, BGR, 8 Dec. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'red dwarf.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of red dwarf

1926, in the meaning defined above

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Time Traveler for red dwarf

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The first known use of red dwarf was in 1926

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Dictionary Entries Near red dwarf

red duster

red dwarf


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Last Updated

22 Sep 2022

Cite this Entry

“Red dwarf.” Dictionary, Merriam-Webster, Accessed 2 Oct. 2022.

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