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
V. L. GinzburgThe first stars and galaxies formed something like 300 million years after the big bang.—Joel Achenbach
compare big crunch, big rip
Joel AchenbachExamples of big bang in a Sentence
Recent Examples on the Web
Marc Ganley The shift from gaming to AI started around 2012, when Nvidia’s GPUs were used by researchers to build AlexNet, what many consider to be modern AI’s big bang moment.
—Katie Tarasov, CNBC, 21 Nov. 2025
Adding to his administration’s volte-face, Biden was on the verge of a big bang in the U.S.-Saudi relationship when Hamas derailed the effort with its October 7, 2023, attack on Israel.
—Dana L. Stroul, MSNBC Newsweek, 14 Nov. 2025
Richard Linklater‘s Nouvelle Vague time-travels to the moment right before modern cinema’s big bang, when the French New Wave crested and Godard’s Breathless would change everything.
—David Fear, Rolling Stone, 31 Oct. 2025
What was conceived as a plan to Marvel-ize the franchise did not translate into a big bang.
—Max Goldbart, Deadline, 30 Oct. 2025
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Katie Tarasov, CNBC, 21 Nov. 2025
Adding to his administration’s volte-face, Biden was on the verge of a big bang in the U.S.-Saudi relationship when Hamas derailed the effort with its October 7, 2023, attack on Israel.
—Dana L. Stroul, MSNBC Newsweek, 14 Nov. 2025
Richard Linklater‘s Nouvelle Vague time-travels to the moment right before modern cinema’s big bang, when the French New Wave crested and Godard’s Breathless would change everything.
—David Fear, Rolling Stone, 31 Oct. 2025
What was conceived as a plan to Marvel-ize the franchise did not translate into a big bang.
—Max Goldbart, Deadline, 30 Oct. 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 29 Nov. 2025.
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