Noun: tautology to'tó-lu-jee
- (logic) a statement that is necessarily true
"the statement ‘he is brave or he is not brave’ is a tautology"
- Useless and pointless repetition
"to say that something is ‘adequate enough’ is a tautology"
Derived forms: tautologies
Type of: repetitiousness, repetitiveness, truth
Encyclopedia: Tautology