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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On February 24, the first night of public access, the system created and distributed some 800,000 alerts, sending out notifications for swooping asteroids, exploding stars, flaring supermassive black holes and other transient celestial events. Meghan Bartels, Scientific American, 26 Feb. 2026 As such, LoTSS-DR3 could revolutionize our understanding of the massive jets and associated radio emissions that rip out from active supermassive black holes and our knowledge of how these outflows can shape entire surrounding galaxies. Robert Lea, Space.com, 25 Feb. 2026 While some astronomers, such as Hudec and Graham, might be looking for a few specific, active, variable supermassive black holes, others such as Jurdana-Šepić study bursting stars. Liz Kruesi, Quanta Magazine, 2 Feb. 2026 The supermassive black hole’s forces are unfathomably strong, but the influences of the giant galaxy cluster around it can’t be ignored either. Andrew Paul, Popular Science, 15 Jan. 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 9 Mar. 2026.

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