tautology: meaning and definitions

EnglishType a word

What is tautology?

What is tautology?

  • Needless repetition of the same sense in different words; redundancy.
  • An instance of such repetition.
  • Logic An empty or vacuous statement composed of simpler statements in a fashion that makes it logically true whether the simpler statements are factually true or false; for example, the statement Either it will rain tomorrow or it will not rain tomorrow.

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