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  1. Big Bang
    IPA[bɪɡ ˈbaŋ]
  2. noun

    • 1. the rapid expansion of matter from a state of extremely high density and temperature which according to current cosmological theories marked the origin of the universe.

    • 2. (in the UK) the introduction in 1986 of major changes in trading on the Stock Exchange, principally involving widening of membership, relaxation of rules for brokers, and computerization.

  3. Variation

    • n.: noun: big bang, plural noun: big bangs