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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
The white dwarf acts as a cosmic thief, pulling material from its red giant companion in a process called accretion.
—Tom Howarth, Newsweek, 31 Dec. 2024
The team observed that the outer star is in the process of becoming a red giant, a phase occurring at the end of a star’s life.
—Laura Baisas, Popular Science, 23 Oct. 2024
Our star will eventually become a red giant and then collapse into a white dwarf billions of years from now.
—Amanda Kooser, Forbes, 17 Oct. 2024
In the evening, red giant flying squirrels emerged from their tree holes before sailing from trunk to trunk in the twilight.
—Mihir Zaveri, New York Times, 25 Nov. 2024
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Word History
First Known Use
1929, in the meaning defined above
Dictionary Entries Near red giant
Cite this Entry
“Red giant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/red%20giant. Accessed 15 Jan. 2025.
Kids Definition
red giant
noun
: a very large star with a relatively low surface temperature
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Thesaurus: All synonyms and antonyms for red giant
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