ALL meanings of big bang theory
big bang the·o·ry
B b - singular noun big bang theory In astronomy the big bang theory is a theory that suggests that the universe was created as a result of an extremely large explosion. 3
- noun big bang theory the theory that the origin of the universe was in a cataclysmic explosion in which all the matter of the universe, packed into a small superdense mass, was hurled in all directions 3
- noun big bang theory a cosmological theory postulating that approximately 12 billion years ago all the matter of the universe, packed into a small superdense mass, was hurled in all directions by a cataclysmic explosion. As the fragments slowed down, the galaxies and stars evolved but the universe is still expanding 3
- noun big bang theory a theory of cosmology holding that the expansion of the universe began with a gigantic explosion (big bang) between 12 and 20 billion years ago 3
- noun big bang theory a theory that deduces a cataclysmic birth of the universe (big bang) from the observed expansion of the universe, cosmic background radiation, abundance of the elements, and the laws of physics. 1