big bang
noun
1
- Astronomy the explosion of dense matter which according to current cosmological theories marked the origin of the universe【天文】（当今宇宙学理论所认为形成宇宙的）创世大爆炸。
- In the beginning a fireball of radiation at extremely high temperature and density, but occupying a tiny volume, is believed to have formed. This expanded and cooled, extremely fast at first, but more slowly as subatomic particles condensed into matter which later accumulated to form galaxies and stars. The galaxies are currently still retreating from one another. What was left of the original radiation continued to cool and has been detected as a uniform background of weak microwave radiation.
2
Big Bang
(in the UK ) the introduction in 1986 of major changes in trading in the Stock Exchange, principally involving widening of membership, relaxation of rules for brokers, and computerization.“大爆炸改革”（英国伦敦证券交易所1986年进行的证券交易改革, 主要内容包括扩展成员范围、放松有关经纪人的规定、实行计算机化等）。