[tau.tol.o.gy] n, pl -gies [LL tautologia, fr. Gk, fr. tautologos] (1574) 1 a: needless repetition of an idea, statement, or word b: an instance of tautology
2: a tautologous statement
Merriam-Webster English vocab.Английский словарь Merriam Webster.2012