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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That's 83 Ursae Majoris, a red giant star roughly 80 times larger and about 1,300 times more luminous than the sun.
—
Joe Rao, Space.com, 9 June 2025
This may become particularly relevant when the proximate red giant star known as Betelgeuse, located around 700 light-years away, goes supernova.
—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
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Joe Rao, Space.com, 9 June 2025
This may become particularly relevant when the proximate red giant star known as Betelgeuse, located around 700 light-years away, goes supernova.
—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
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 21 Jul. 2025.
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