big bang
noun
: the cosmic explosion that marked the beginning of the universe according to the big bang theory
In 1965 Arno A. Penzias and Robert W. Wilson of the Bell Telephone Laboratories discovered that the space of the universe is bathed with a diffuse radiation that is assumed to persist following the "big bang" expansion of the universe from an original fireball.—
V. L. Ginzburg
compare big crunch, big rip
V. L. GinzburgExamples of big bang in a Sentence
Recent Examples on the Web
On October 9, 2022, astronomers detected a big bang.
—Andrew Paul, Popular Science, 30 July 2025
Why get ‘trompe l’oeil’ bangs? Long and short bangs have been top of the hair style trends and a regular request from those in the hair salon chair for quite some time now: Side fringes of the early ’00s, baby bangs a la Emma Stone, and pumped up hair with big bangs to match by way of Keke Palmer.
—Ana Morales, Vogue, 23 July 2025
But after a few minutes of big bangs, the fireworks suddenly stopped.
—Matt Leclercq, Fort Worth Star-Telegram, 30 June 2025
Bilateral meetings between Trump and leaders looking for a trade deal are expected to take place at the G7 summit over the next few days, but the odds of any big bang deals being struck are uncertain.
—Holly Ellyatt, CNBC, 16 June 2025
See All Example Sentences for big bang
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Andrew Paul, Popular Science, 30 July 2025
Why get ‘trompe l’oeil’ bangs? Long and short bangs have been top of the hair style trends and a regular request from those in the hair salon chair for quite some time now: Side fringes of the early ’00s, baby bangs a la Emma Stone, and pumped up hair with big bangs to match by way of Keke Palmer.
—Ana Morales, Vogue, 23 July 2025
But after a few minutes of big bangs, the fireworks suddenly stopped.
—Matt Leclercq, Fort Worth Star-Telegram, 30 June 2025
Bilateral meetings between Trump and leaders looking for a trade deal are expected to take place at the G7 summit over the next few days, but the odds of any big bang deals being struck are uncertain.
—Holly Ellyatt, CNBC, 16 June 2025
See All Example Sentences for big bang
Cite this Entry
“Big bang.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/big%20bang. Accessed 21 Aug. 2025.
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