big bang theory Meaning of "big bang theory"

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Definition(s):

  • (n) (cosmology) the theory that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion of a small volume of matter at extremely high density and temperature

Usage(s):

  • These must have been formed in some way that is not accounted for in the big bang theory.
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irrevocable
/ɪ ˈrɛ və kə bəl /