tautologous


tau·tol·o·gy

T0061700 (tô-tŏl′ə-jē) n. pl. tau·tol·o·gies 1. a. Needless repetition of the same sense in different words; redundancy. b. An instance of such repetition. 2. Logic A statement composed of simpler statements in such a way that it is logically true whether the simpler statements are factually true or false; for example, the statement Either it will rain tomorrow or it will not rain tomorrow.
[Late Latin tautologia, from Greek tautologiā, from tautologos, redundant : tauto-, tauto- + logos, saying; see -logy.]
tau′to·log′i·cal (tôt′l-ŏj′ĭ-kəl), tau′to·log′ic (-ĭk), tau·tol′o·gous (-tŏl′ə-gəs) adj. tau′to·log′i·cal·ly, tau·tol′o·gous·ly adv.