negation

Meaning

Noun

• The act of negating something.
• A denial or contradiction.
• 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".)
• The logical operation which obtains such (negated) propositions.

Related

Broader meaning words

• contradictory
• logical connective

Origin

• From Middle English negacioun, from Old French negacion, from Latin negātiō ("a denial; negative word").
• Morphologically negate + -ion