Definition of Tautology

1. Noun. (logic) a statement that is necessarily true. "The statement `he is brave or he is not brave' is a tautology"

Category relationships: Logic
Generic synonyms: True Statement, Truth
Derivative terms: Tautological

2. Noun. Useless repetition. "To say that something is `adequate enough' is a tautology"
Generic synonyms: Repetitiousness, Repetitiveness
Derivative terms: Tautologic, Tautological

Definition of Tautology

1. n. 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.

Definition of Tautology

1. Noun. redundant use of words ¹

2. Noun. An expression that features tautology. ¹

3. Noun. (countable logic) A statement that is true for all values of its variables ¹

¹ Source: wiktionary.com

Definition of Tautology

1. [n -GIES]

Medical Definition of Tautology

1. 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) Synonym: Repetition. Tautology, Repetition. There may be frequent repetitions (as in legal instruments) which are warranted either by necessity or convenience; but tautology is always a fault, being a sameness of expression which adds nothing to the sense or the sound. Origin: L. Tautologia, Gr., cf. F. Tautologie. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Tautology

tautograms
tautogs
tautologia
tautologic
tautological
tautologically
tautologies
tautologist
tautologists
tautologize
tautologized
tautologizes
tautologizing
tautologous
tautologously
tautology (current term)
tautomer
tautomeric
tautomeric fibres
tautomerism
tautomerisms
tautomerization
tautomerizations
tautomerize
tautomerized
tautomerizes
tautomerizing
tautomers
tautomorphemic

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