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