Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Noun: tautology  to'tó-lu-jee
  1. (logic) a statement that is necessarily true
    "the statement 'he is brave or he is not brave' is a tautology"
     
  2. Useless and pointless repetition
    "to say that something is 'adequate enough' is a tautology"

Derived forms: tautologies

Type of: repetitiousness, repetitiveness, truth

Encyclopedia: Tautology