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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This is an issue because the merger and feeding process that allows supermassive black holes to grow to masses of millions, or even billions, of times that of the sun were previously thought to take at least 1 billion years to reach fruition. Robert Lea, Space.com, 23 Mar. 2026 The clouds of gas and dust surround the supermassive black hole at the galactic dead center. Marcia Dunn, Los Angeles Times, 16 Mar. 2026 In the centers of active galaxies, huge amounts of matter swirl around a central supermassive black hole, forming a dense rotating disk. Rupendra Brahambhatt, Interesting Engineering, 14 Mar. 2026 That team pointed out that a supermassive black hole ramming through space would have a difficult time raising a sufficiently strong wake to collapse gas into stars. Phil Plait, Scientific American, 13 Mar. 2026 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 30 Mar. 2026.

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