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Definition of: tautology
(tô·tol′ə·jē) noun plural ·gies
Unnecessary repetition of the same idea in different words; pleonasm; also, an instance of such repetition; as, He is writing his own autobiography. See REDUNDANCE. [<LL tautologia <Gk. <tauto the same + logos discourse]
—tau·to·log·ic (tô′tə·loj′ik) or ·i·cal adjective
—tau′to·log′i·cal·ly adverb
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