supermassive

adjective

su·​per·​mas·​sive ˌsü-pər-ˈma-siv How to pronounce supermassive (audio)
: having a very large mass : extremely or extraordinarily massive
a supermassive black hole

Examples of supermassive in a Sentence

Recent Examples on the Web
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While it is packed with stars and hosts a supermassive black hole — which at nine billion solar masses is more than 2,000 times more massive than the Milky Way's central black hole — it is considered a calm galaxy. Samantha Mathewson, Space.com, 17 Apr. 2025 In fact, even Messier 104's central supermassive black hole—which is more than 2,000 times larger than its counterpart in the Milky Way, Sagittarius A, at a staggering 9 billion solar masses—is quite calm. Thomas G. Moukawsher, MSNBC Newsweek, 17 Apr. 2025 Some may be from galaxy group collisions, others from exploding stars and still others from supermassive black hole belches. Phil Plait, Scientific American, 17 Apr. 2025 Among those discoveries are objects like supermassive black holes, newborn stars, and supernovae. Kevin Anderton, Forbes.com, 8 Apr. 2025 See All Example Sentences for supermassive

Word History

First Known Use

1937, in the meaning defined above

Time Traveler
The first known use of supermassive was in 1937

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Cite this Entry

“Supermassive.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supermassive. Accessed 24 Apr. 2025.

Last Updated: - Updated example sentences
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