big bang
The 'Big Bang' is a cornerstone concept in modern cosmology, explaining the origin and expansion of the universe.
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Definition
C1Astrophysics
(scientific, academic)The event marking the origin of the universe, where all matter and energy expanded from an extremely hot and dense state approximately 13.8 billion years ago.
Example
- The Big Bang theory provides a comprehensive explanation for the observable expansion of the universe.
- Scientists study cosmic microwave background radiation to learn more about the Big Bang.
B2General
(metaphorical)A moment of significant and transformative change, often used to describe the start of something major.
Example
- The launch of the new product was the Big Bang that the company needed to boost its market presence.
- Her career took off with a Big Bang after the successful release of her debut album.
Similar
Terms that have similar or relatively close meanings to "big bang":