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  1. TAUTOLOGY Definition & Meaning - Merriam-Webster

    The meaning of TAUTOLOGY is needless repetition of an idea, statement, or word. How to use tautology in a sentence.

  2. Tautology (logic) - Wikipedia

    In mathematical logic, a tautology (from Ancient Greek: ταυτολογία) is a formula that is true regardless of the interpretation of its component terms, with only the logical constants having a fixed meaning. It is …

  3. TAUTOLOGY | English meaning - Cambridge Dictionary

    TAUTOLOGY definition: 1. the use of two words or phrases that express the same meaning, in a way that is unnecessary and…. Learn more.

  4. Tautology | Definition & Facts | Britannica

    Tautology, in logic, a statement so framed that it cannot be denied without inconsistency. The notion was first developed in the early 20th century by the American philosopher Charles Sanders Peirce, …

  5. Tautology: Explanation and Examples - Grammar Monster

    Tautology is the needless repetition of a single concept. In other words, it is saying the same thing twice in different words. The following are examples of tautology: a single bachelor, PIN number, ATM …

  6. TAUTOLOGY Definition & Meaning | Dictionary.com

    What does tautology mean? A tautology is the unnecessary repetition of an idea, statement, or word whose meaning has already been expressed, as in 8 a.m. in the morning.

  7. Tautology - Definition, Meaning & Synonyms | Vocabulary.com

    In the study of logic, a tautology is a statement that is necessarily true under any interpretation and cannot be denied without introducing logical inconsistencies.

  8. tautology, n. meanings, etymology and more | Oxford English Dictionary

    Factsheet What does the noun tautology mean? There are five meanings listed in OED's entry for the noun tautology. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

  9. tautology noun - Definition, pictures, pronunciation and usage notes ...

    Definition of tautology noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  10. Tautology: Definition and Best Examples - Grammar.com

    The word tautology refers to a phrase in which the same meaning is expressed twice. The word comes from the Greek “tauto” meaning “same” and “logy" meaning “logic.” The use of tautology in your …