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
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In five billion years' time, our sun will turn into a white dwarf after its red giant phase. Keith Cooper, Space.com, 19 Dec. 2024 But the discovery of an Earth-like planet orbiting a white dwarf—the stage of stellar evolution that follows a red giant—provides evidence that survival is a possibility, researchers reported last week in Nature Astronomy. Christie Wilcox, science.org, 30 Sep. 2024 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 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

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 2 Feb. 2025.

Kids Definition

red giant

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

More from Merriam-Webster on red giant

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