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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In turn, researchers can use these rhythmic pulses to reveal tiny changes in spacetime and detect gravitational waves caused by large, massive objects—including supermassive black holes. Jackie Flynn Mogensen, Scientific American, 10 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 Using the Event Horizon Telescope (EHT), astronomers have tracked a 3,000 light-years-long cosmic blowtorch back to its source, the supermassive black hole M87*, which bears the distinction of being the first black hole imaged by humanity. Robert Lea, Space.com, 29 Jan. 2026 Additionally, some supermassive black holes form a jet of outflowing material that emits strongly at radio wavelengths. Georgina Jedikovska, Interesting Engineering, 23 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 14 Feb. 2026.

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