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Meaning & Definition of Theory in English





1. A well-substantiated explanation of some aspect of the natural world

  • An organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
  • "Theories can incorporate facts and laws and tested hypotheses"
  • "True in fact and theory"
  • theory

2. A tentative insight into the natural world

  • A concept that is not yet verified but that if true would explain certain facts or phenomena
  • "A scientific hypothesis that survives experimental testing becomes a scientific theory"
  • "He proposed a fresh theory of alkalis that later was accepted in chemical practices"
  • hypothesis,
  • possibility,
  • theory

3. A belief that can guide behavior

  • "The architect has a theory that more is less"
  • "They killed him on the theory that dead men tell no tales"
  • theory

Examples of using

The more people believe in some theory, the more is the probability that it's false. He who is right is alone in most cases.
I have a theory.
I revised my theory.