big bang theory


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Big Bang theory

n.
A scientific theory describing the origin of all space, time, matter, and energy approximately 13.7 billion years ago from the violent expansion of a singular point of extremely high density and temperature.

big′ bang′ the`ory


n.
a theory that the universe began with an explosion of a dense mass of matter and is still expanding from the force of that explosion.
[1950–55]

big bang theory

The idea that the universe began with an explosion 13–20 billion years ago. According to the theory, formulated in 1927, the universe is still expanding. It is now obsolete to some extent. Compare steady state theory.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.big bang theory - (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 temperaturebig bang theory - (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
scientific theory - a theory that explains scientific observations; "scientific theories must be falsifiable"
cosmogeny, cosmogony, cosmology - the branch of astrophysics that studies the origin and evolution and structure of the universe
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