tautologous
tau.tol.o.gous \to.-'ta:l-*-g*s\ aj [Gk tautologos, fr. taut- + legein to speak - more at LE]GEND 1: involving rhetorical tautology 2: true by virtue of its logical form alone : ANALYTIC - tau.tol.o.gous.ly av
Webster's English Dictionarytau.tol.o.gous \to.-'ta:l-*-g*s\ aj [Gk tautologos, fr. taut- + legein to speak - more at LE]GEND 1: involving rhetorical tautology 2: true by virtue of its logical form alone : ANALYTIC - tau.tol.o.gous.ly av