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Tautology
Babylon English English dictionaryDownload this dictionary
tautology
n. needless repetition of same idea in different words

Wikipedia English The Free EncyclopediaDownload this dictionary
Tautology
Tautology may refer to:
  • Tautology (rhetoric), using different words to say the same thing, or a series of self-reinforcing statements that cannot be disproved because they depend on the assumption that they are already correct
  • Tautology (logic), a technical notion in formal logic, universal unconditioned truth, always valid
  • Tautology (rule of inference), a rule of replacement for logical expressions in some systems of propositional logic

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WordNet 2.0 DictionaryDownload this dictionary
tautology
Noun
1. (logic) a statement that is necessarily true; "the statement `he is brave or he is not brave' is a tautology"
(hypernym) truth, true statement
(classification) logic
2. useless repetition; "to say that something is `adequate enough' is a tautology"
(hypernym) repetitiveness, repetitiousness


Babylon English-CzechDownload this dictionary
tautology
n. tautologie

Webster's Revised Unabridged Dictionary (1913)Download this dictionary
Tautology
(n.)
A repetition of the same meaning in different words; needless repetition of an idea in different words or phrases; a representation of anything as the cause, condition, or consequence of itself, as in the following lines: --
The dawn is overcast, the morning lowers,
And heavily in clouds brings on the day.
Addison.
  

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
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