from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Needless repetition of the same sense in different words; redundancy.
- noun An instance of such repetition.
- noun 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.
from The Century Dictionary.
- noun Repetition of the same word, or use of several words conveying the same idea, in the same immediate context. See
- noun The repetition of the same thing in different words; the useless repetition of the same idea or meaning: as, “they did it successively one after the other”; “both simultaneously made their appearance at one and the same time.”
- noun Synonyms Redundancy, etc. See
from the GNU version of the Collaborative International Dictionary of English.
- noun (Rhet.) A repetition of the same meaning in different words; needless repetition of an idea in different words or phrases; a representation of anything as the cause, condition, or consequence of itself, as in the following lines: -- The dawn is overcast, the morning lowers, And heavily in clouds brings on the day. Addison.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun uncountable
redundantuse of words
- noun countable An expression that features tautology.
- noun countable, logic A
statementthat is true for all valuesof its variables
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun (logic) a statement that is necessarily true
- noun useless repetition
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
This is the logical notion of tautology, which is very different from the way the term tautology is used in stylistics
Digital download? isnt that what they call a tautology?
It's only a tautology is you pretend life and niches don't have distinguishable properties and that a niche can't be populated.
And to say so is not to engage in tautology, which I think you were referring to, Andrew, when you made that remark about philosophy classes.
They argue that it is not a genuine claim about the real world but merely a truism, what philosophers call a tautology ” something true by the meaning of the words like ˜bachelors are unmarried.™
Cato - Its an absolute certainty that your close scrutiny revealed a tautology, which is an added bonus.
Homer Nods We erred yesterday in characterizing as a tautology the statement that if obese people outnumber the merely overweight, they must also outweigh them.
Will someone please explain to Egnor that a tautology is a kind of statement, not a kind of concept?
That is not a tautology, that is just being confused and contradictary
A tautology is a logical fact, one that is independent of any empirical observation.