big bang theory

Từ điển Oxford Learners Wordfinder Dictionary

noun

(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
• Syn:
big-bang theory
• Topics:
cosmology, cosmogony, cosmogeny
• Hypernyms:
scientific theory