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
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This may become particularly relevant when the proximate red giant star known as Betelgeuse, located around 700 light-years away, goes supernova.
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Robert Lea, Space.com, 13 June 2025
Arcturus, the fourth brightest star in the night sky is an aging red giant only 36.6 light years away.
—Bruce Dorminey, Forbes.com, 7 June 2025
Can life survive in the solar system once the sun dies and becomes a red giant star?
—Paul Sutter, Space.com, 3 June 2025
The other is a red giant, a previous stage of stellar evolution in which a dying star with an expanding radius and diminishing surface temperature runs out of hydrogen fuel.
—Jack Knudson, Discover Magazine, 6 Jan. 2025
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Robert Lea, Space.com, 13 June 2025
Arcturus, the fourth brightest star in the night sky is an aging red giant only 36.6 light years away.
—Bruce Dorminey, Forbes.com, 7 June 2025
Can life survive in the solar system once the sun dies and becomes a red giant star?
—Paul Sutter, Space.com, 3 June 2025
The other is a red giant, a previous stage of stellar evolution in which a dying star with an expanding radius and diminishing surface temperature runs out of hydrogen fuel.
—Jack Knudson, Discover Magazine, 6 Jan. 2025
See All Example Sentences for red giant
Cite this Entry
“Red giant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red%20giant. Accessed 30 Jun. 2025.
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