tautology

== English == === Etymology === From Late Latin tautologia, from Ancient Greek ταὐτολογία (tautología) from ταὐτός (tautós, “the same”) + λόγος (lógos, “explanation”). By surface analysis, tauto- +‎ -logy. === Pronunciation === (Standard Southern British) IPA(key): /toːˈtɔl.ə.d͡ʒi/ (General American) IPA(key): /tɔˈtɑl.ə.d͡ʒi/ Rhymes: -ɒlədʒi === Noun === tautology (countable and uncountable, plural tautologies) (uncountable) Redundant use of words, a pleonasm, an unnecessary and tedious repetition. (countable) An expression that features tautology. The expression "raze to the ground" is a tautology, since the word "raze" includes the notion "to the ground". (countable, logic, propositional logic) A statement that is true for all truth values of its propositional variables. (countable, logic, first-order logic) A statement that is true for all truth values of its Boolean atoms. ==== Antonyms ==== (antonym(s) of “linguistics: expression”): contradiction in terms (antonym(s) of “in logic”): contradiction (antonym(s) of “literary”): oxymoron ==== Coordinate terms ==== (in logic): contingency, contradiction ==== Derived terms ==== ==== Translations ==== === See also === pleonasm redundancy Tautology on Wikipedia.Wikipedia