tautology Hear it!

tautology definition

tau·tol·ogy (tô täl′ə jē)

noun pl. tautologies -·gies

    1. needless repetition of an idea in a different word, phrase, or sentence; redundancy; pleonasm (Ex.: “necessary essentials”)
    2. an instance of such repetition
  2. Logic a proposition that is analytic (sense )

Etymology: LL tautologia < Gr: see tauto- & -logy

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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