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Definition of Big-bang Theory in English :

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Big-bang Theory

see synonyms of big-bang theory

Noun

1. big bang theory, 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 temperature

WordNet Lexical Database for English. Princeton University. 2010.

Big-bang Theory

see synonyms of big-bang theory
noun
physics
the theory that the origin of the universe was in a cataclysmic explosion in which all the matter of the universe, packed into a small superdense mass, was hurled in all directions
noun
a cosmological theory postulating that approximately 12 billion years ago all the matter of the universe, packed into a small superdense mass, was hurled in all directions by a cataclysmic explosion. As the fragments slowed down, the galaxies and stars evolved but the universe is still expanding
Compare steady-state theory

Collins English Dictionary. Copyright © HarperCollins Publishers

Big-bang Theory

see synonyms of big-bang theory
a theory of cosmology holding that the expansion of the universe began with a gigantic explosion (big bang) between 12 and 20 billion years ago
see also steady-state theory

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

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