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event horizon
noun
: the surface of a black hole : the boundary of a black hole beyond which nothing can escape from within it
Examples of event horizon in a Sentence
Recent Examples on the Web
It is widely believed that black holes without an event horizon, called naked singularities, cannot exist.
—Steve Nadis, WIRED, 15 Sep. 2024
So recently, now the event horizon of abject failure is upon the London Stock Exchange where the CEO of the exchange itself is not even on the board of the London Stock Exchange Group, the word is out that the London market needs rejuvenating.
—Clem Chambers, Forbes, 23 Sep. 2024
That is until the bacteria crosses the equivalent of an event horizon, where the flow becomes fast enough to sweep away communication signals too.
—The Physics Arxiv Blog, Discover Magazine, 17 Sep. 2024
Meanwhile, if the accelerating expansion of the universe continues unabated, all other galaxies will disappear beyond our cosmic event horizon, leaving Milkomeda as the sole occupant of the visible universe.
—Bydaniel Clery, science.org, 9 Aug. 2024
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Word History
First Known Use
1956, in the meaning defined above
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Cite this Entry
“Event horizon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/event%20horizon. Accessed 23 Nov. 2024.
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