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tautological - 3 dictionary results

tau⋅tol⋅o⋅gy

  [taw-tol-uh-jee]
Use tautological in a Sentence
–noun, plural -gies.
1. needless repetition of an idea, esp. in words other than those of the immediate context, without imparting additional force or clearness, as in “widow woman.”
2. an instance of such repetition.
3. Logic.
a. a compound propositional form all of whose instances are true, as “A or not A.”
b. an instance of such a form, as “This candidate will win or will not win.”
Origin:
1570–80; < LL tautologia < Gk tautología. See tauto-, -logy

Related forms:
tau⋅to⋅log⋅i⋅cal  [tawt-l-oj-i-kuhl] , tau⋅to⋅log⋅ic, tau⋅tol⋅o⋅gous  [taw-tol-uh-guhs] , adjective
tau⋅to⋅log⋅i⋅cal⋅ly, tau⋅tol⋅o⋅gous⋅ly, adverb
tau⋅tol⋅o⋅gist, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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tau·tol·o·gy   (tô-tŏl'ə-jē)   
n.   pl. tau·tol·o·gies
    1. Needless repetition of the same sense in different words; redundancy.
    2. An instance of such repetition.
  2. Logic An empty or vacuous statement composed of simpler statements in a fashion that makes it 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) adj., tau'to·log'i·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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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.

Tautological echo, an echo that repeats the same sound or syllable many times.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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