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

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This surprising discovery could have implications for how black holes, particularly supermassive black holes, influence the evolution of their host galaxies. Robert Lea, Space.com, 9 Sep. 2025 Scientists know that supermassive black holes reside in the centers of most galaxies. Bill Smith, JSTOR Daily, 4 Sep. 2025 Could early, supermassive stars be the unified solution? Ethan Siegel, Big Think, 2 Sep. 2025 Powered by matter falling into supermassive black holes, these objects can blast blobs of gas away from the galaxy at speeds approaching that of light. Phil Plait, Scientific American, 29 Aug. 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 10 Sep. 2025.

Last Updated: - Updated example sentences
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