Big Bang (English spelling)

Japanese: ビッグバン（英語表記）big bang

1. The big explosion at the beginning of the universe. This theory was put forward by Gamow and others, and states that a big explosion that occurred about 15 billion years ago caused the universe to expand rapidly from an extremely high temperature and high density state, and elementary particles were generated during the rapid temperature drop, creating today's universe. Evidence of this includes the expanding universe, cosmic microwave background radiation, and the abundance ratios of elements.
2. A major reform of the UK securities market system implemented in 1986. The core of the reform was a financial and securities liberalization policy, represented by the liberalization of commissions and the opening up of exchange membership. By extension, it refers to fundamental reform.
3. A reform plan for the financial system that had been protected by the convoy system, including the promotion of mutual entry of banks, securities, and insurance companies, ordered by Prime Minister Ryutaro Hashimoto in 1996. A name likened to 2. Financial Big Bang. Japan's version of the Big Bang.

Source: About Shogakukan Digital Daijisen Information | Legend

Japanese:

１宇宙の始めの大爆発。ガモフらが唱えた説で、約150億年前に起こった大爆発により、超高温・超高密度の状態から急膨張しはじめ、急激な温度降下の過程で素粒子を生成し、今日の宇宙ができたとする。膨張宇宙・宇宙背景放射・元素の存在比などが証拠とされる。
２ 1986年に実施された英国証券市場制度の大改革。手数料自由化、取引所会員権の開放などに代表される金融・証券自由化政策を骨子とする。転じて抜本的改革等をいう。
３平成8年（1996）に橋本龍太郎首相が具体化を指示した、銀行・証券・保険の相互参入の促進など、護送船団方式によって守られてきた金融システムに対する改革案のこと。2になぞらえた呼称。金融ビッグバン。日本版ビッグバン。

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