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  1. Oxford Dictionary

    Big Bang

    • IPA[ˌbɪɡ ˈbaŋ]

    英式

    • n.
      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.；(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.

    • noun: big bang, plural noun: big bangs