big bang


Definition of big bang

: the cosmic explosion that marked the beginning of the universe according to the big bang theory — compare big crunch, big rip

Examples of big bang in a Sentence

Recent Examples on the Web

The universe sprang into existence in the big bang as a hot, dense soup of subatomic particles. Adrian Cho, Science | AAAS, "Galaxy simulations are at last matching reality—and producing surprising insights into cosmic evolution," 30 May 2018 USA TODAY Sports PHILADELPHIA – Time to get the biggest bang yet for their buck. Jarrett Bell, USA TODAY, "Eagles lean on wrecking-ball defensive line for playoff boost," 11 Jan. 2018 So is this the end for eternal inflation and the big bang singularity? Adrian Cho, Science | AAAS, "Stephen Hawking’s (almost) last paper: putting an end to the beginning of the universe," 2 May 2018 The big bang generated only hydrogen and a bit of helium. Daniel Clery, Science | AAAS, "Discovery of middleweight black holes could explain origin of million-solar-mass monster," 30 May 2018 In this formulation the big bang was literally the beginning of time. Alexander Hellemans, Scientific American, "A Conversation with Thomas Hertog, One of Stephen Hawking’s Final Collaborators," 24 May 2018 In addition, scientists with the European Space Agency's Planck spacecraft in 2013 released an exquisitely precise measurement of the afterglow of the big bang, the cosmic microwave background (CMB). Adrian Cho, Science | AAAS, "Reports of sterile neutrino’s resurrection may be greatly exaggerated," 4 June 2018 Research is all about the biggest bang, but the imperative for products is bang-for-the-buck. Scott Kirsner,, "After viral YouTube fame, Boston Dynamics is ready to sell its robots," 6 July 2018 Sensitive to lower frequencies than MeerKAT, the MWA can pick up the neutral hydrogen signal from as far back as 500 million years after the big bang, when the first stars and galaxies were lighting up the universe. Daniel Clery, Science | AAAS, "New radio telescope in South Africa will study galaxy formation," 19 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'big bang.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of big bang

1950, in the meaning defined above

Keep scrolling for more

Learn More about big bang

Statistics for big bang

Last Updated

15 Jan 2019

Look-up Popularity

Time Traveler for big bang

The first known use of big bang was in 1950

See more words from the same year

More from Merriam-Webster on big bang

Rhyming Dictionary: Words that rhyme with big bang

Comments on big bang

What made you want to look up big bang? Please tell us where you read or heard it (including the quote, if possible).


means, resources, or money

Get Word of the Day daily email!

Test Your Vocabulary

Homophone Quiz

  • three-bears-two-of-them-look-like-theyre-whispering-to-a-third-bear-who-looks-chuffed-to-be-the-center-of-attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!