Definition of Tautology (uncountable) Redundant use of words, a pleonasm, an unnecessary and tedious repetition. | (countable) An expression that features tautology. | (countable, logic) In propositional logic: a statement that is true for all truth values of its propositional variables. In first-order logic: a statement that is true for all truth values of its Boolean atoms.
How to use Tautology in Sentences?
- 1. Miss Farrar says I use tautology and repeat myself, and that my grammar is shaky and my general style poor. 🔊
- 2. These passages are all thoroughly in keeping with the general tone of the lesser work: it would be tautology to add that they are no less utterly out of keeping with the general tone of the other. 🔊