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red giant

noun

: a star that has low surface temperature and a diameter that is large relative to the sun

Examples of red giant in a Sentence

Recent Examples on the Web
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.
One strange quality of Kepler-56 is that its outer envelope is spinning incredibly rapidly — about 10 times faster than is typical for red giant stars. Paul Sutter, Space.com, 26 Nov. 2025 Although the study shows that the occurrence of giant planets declines as stars age, the few planets that remain in close orbits around red giants offer valuable insights. Bojan Stojkovski, Interesting Engineering, 8 Nov. 2025 Sometime between now and when the sun enters its Earth-devouring red giant phase, Major League Baseball will make an official announcement regarding its 2026-28 media rights contracts. Anthony Crupi, Sportico.com, 24 Sep. 2025 Arcturus’ orange-red glow is typical of stars classified as red giants. Mike Lynch, Twin Cities, 7 Sep. 2025 See All Example Sentences for red giant

Word History

First Known Use

1929, in the meaning defined above

Time Traveler
The first known use of red giant was in 1929

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Cite this Entry

“Red giant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red%20giant. Accessed 29 Nov. 2025.

Kids Definition

red giant

noun
: a very large star with a relatively low surface temperature

More from Merriam-Webster on red giant

Last Updated: - Updated example sentences
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