su·​per·​gi·​ant | \ ˈsü-pər-ˌjī-ənt \

Definition of supergiant

: something that is extremely large especially : a star of very great intrinsic luminosity and enormous size

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Other Words from supergiant

supergiant adjective

Examples of supergiant in a Sentence

Recent Examples on the Web

For blue supergiants, with dozens of times the Sun's mass, the models stop exploding. John Timmer, Ars Technica, "Atoms may come apart as the Universe’s biggest stars explode," 24 Oct. 2018 Yellow supergiants can exist between ten to a hundred thousand years before going supernova. Lauren Castle, azcentral, "Lowell Observatory researcher discovers 'runaway' star 200,000 light years from Earth," 3 Apr. 2018 According to Lowell Observatory, the star is the first runaway yellow supergiant to be discovered and the second evolved runaway star to be found in another galaxy. azcentral, "AZ Memo: Maricopa Community Colleges faculty seek $850K; Should home businesses have fewer restrictions; Star found by Lowell Observatory," 3 Apr. 2018 Blue supergiant stars do not have life spans of nine billion years. Washington Post,, "This star is the farthest ever seen. It’s 9 billion light-years away.," 4 Apr. 2018 At the time, the best candidate for a black hole was Cygnus X-1, one of the strongest x-ray sources in the sky, centered on a supergiant star. Adrian Cho, Science | AAAS, "Hawking’s final quest: saving quantum theory from black holes," 20 Mar. 2018 Mars' reddish doppelganger, the supergiant star Antares, loiters underneath Mars now. The ringed Saturn rises in the east at about 4:45 a.m. Monday, according to the observatory, hanging out in the constellation Sagittarius. Blaine P. Friedlander Jr., Washington Post, "Jupiter takes the lead in parade of visible planets," 3 Feb. 2018 By Caleb Scharf What do a common cold-causing virus, an adult blue whale and the red supergiant star Betelgeuse have in common? Gemma Tarlach, Discover Magazine, "What to Read in December," 10 Nov. 2017 That’s because the star is a red supergiant, a star reaching the end of its life that begins to puff up, sometimes 100 to 1,000 times larger than our own sun. Jason Daley, Smithsonian, "This Is the Best Image of a Star Beyond Our Solar System (Yet)," 24 Aug. 2017

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

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First Known Use of supergiant

1926, in the meaning defined above

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The first known use of supergiant was in 1926

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to express emotion in a dramatic way

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