NEGATION

negation

(noun) (logic) a proposition that is true if and only if another proposition is false

negation

(noun) the speech act of negating

negation

(noun) a negative statement; a statement that is a refusal or denial of some other statement

Source: WordNet® 3.1

Etymology

Noun

negation (countable and uncountable, plural negations)

(uncountable) The act of negating something.

(countable) A denial or contradiction.

(logic, countable) A proposition which is the contradictory of another proposition and which can be obtained from that other proposition by the appropriately placed addition/insertion of the word "not". (Or, in symbolic logic, by prepending that proposition with the symbol for the logical operator "not".)

(logic) The logical operation which obtains such (negated) propositions.

Hypernyms

• (a proposition which negates another one): contradictory

• (logical operation): logical connective

Anagrams

• Antigone

Source: Wiktionary

Ne*ga"tion, n. Etym: [L. negatio, fr. negare to say no, to deny; ne not + the root of aio I say; cf. Gr. ah to say; cf. F. négation. 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 Ant: affirmation. Our assertions and negations should be yea and nay. Rogers.

2. (Logic)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition