red giant


Definition of red giant

: 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 process begins with a binary system, in which one of the two stars turns into a red giant, leaving just a white dwarf remnant core still in orbit with the other star in the system. Jennifer Ouellette, Ars Technica, 20 Apr. 2022 So these stars take on an orange-red appearance, hence the red giant moniker. Jennifer Ouellette, Ars Technica, 29 Mar. 2022 Eventually, the helium in a red giant's core will be spent, and the core will shrink again. Jennifer Ouellette, Ars Technica, 29 Mar. 2022 When that happens, the Sun will become a red giant. Joshua Hawkins, BGR, 19 Jan. 2022 Also, that big red giant looks a lot like the unexplained mountain in the Indian ocean. Chris Smith, BGR, 10 Nov. 2021 In roughly 5 billion years, our sun is expected to become a red giant and later a white dwarf. NBC News, 1 July 2021 This aligns with prior Hubble observations of DF4, which used the tip of the red giant branch to determine a distance of 65 million light-years (±5 million light-years) for that galaxy. Ethan Siegel, Forbes, 22 June 2021 As its core contracts, its outer layers will expand, passing into what is referred to as the red giant phase. Priyamvada Natarajan, The New York Review of Books, 15 June 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'red giant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of red giant

1929, in the meaning defined above

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Time Traveler for red giant

Time Traveler

The first known use of red giant was in 1929

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Dictionary Entries Near red giant


red giant

red ginger

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Statistics for red giant

Last Updated

6 May 2022

Cite this Entry

“Red giant.” Dictionary, Merriam-Webster, Accessed 4 Jul. 2022.

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