Negation - Dictionary Definition and Overview

Negation :  (noun)
1: a negative statement; a statement that is a refusal or denial of some other statement
2: the speech act of negating
3: (logic) a proposition that is true if and only if another proposition is false

Based on WordNet 2.0

Negation : \Ne*ga"tion\, n. [L. negatio, fr. negare to say no, to deny; ne not _ the root of aio I say; cf. Gr. ?, Skr. ah to say; cf. F. n['e]gation. See No, adv., and cf. Adage, Deny, Renegade.] 1. The act of denying; assertion of the nonreality or untruthfulness of anything; declaration that something is not, or has not been, or will not be; denial; -- the opposite of affirmation.

Our assertions and negations should be yea and nay. --Rogers.

2. (Logic) Description or definition by denial, exclusion, or exception; statement of what a thing is not, or has not, from which may be inferred what it is or has.

Based on Webster's Revised Unabridged Dictionary

NEGATION. Denial. Two negations are construed to mean one affirmation. Dig. 50, 16, 137.

Based on Webster's Revised Unabridged Dictionary (1913)
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