'Tautological' definitions:

Definition of 'tautological'

From: WordNet
adjective
Repetition of same sense in different words; "`a true fact' and `a free gift' are pleonastic expressions"; "the phrase `a beginner who has just started' is tautological"; "at the risk of being redundant I return to my original proposition"- J.B.Conant [syn: pleonastic, redundant, tautologic, tautological]

Definition of 'Tautological'

From: GCIDE
  • Tautological \Tau`to*log"ic*al\, a. [Cf. F. tautologique.] Involving tautology; having the same signification; as, tautological expression. -- {Tau`to*log"ic*al*ly}, adv. [1913 Webster]
  • Tautological echo, an echo that repeats the same sound or syllable many times. [1913 Webster]