English noun: big-bang theory | |||
1. | big-bang theory (cognition) (cosmology) the theory that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion of a small volume of matter at extremely high density and temperature | ||
Synonyms | big bang theory | ||
Broader (hypernym) | scientific theory | ||
Domain category | cosmogeny, cosmogony, cosmology | ||