BIG BANG THEORY

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 Dictionary entry overview: What does big bang theory mean? 

• BIG BANG THEORY (noun)
  The noun BIG BANG THEORY has 1 sense:

1. (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

  Familiarity information: BIG BANG THEORY used as a noun is very rare.

 Dictionary entry details 

• BIG BANG THEORY (noun)

Sense 1

Meaning:

(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

Classified under:

Nouns denoting cognitive processes and contents

Synonyms:

big-bang theory; big bang theory

Hypernyms ("big bang theory" is a kind of...):

scientific theory (a theory that explains scientific observations)

Domain category:

cosmogeny; cosmogony; cosmology (the branch of astrophysics that studies the origin and evolution and structure of the universe)