Definition of negation noun from the Oxford Advanced Learner's Dictionary

     

    negation

     noun
    noun
    BrE BrE//nɪˈɡeɪʃn//
     
    ; NAmE NAmE//nɪˈɡeɪʃn//
     
    (formal)
     
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  1. 1[countable, usually singular, uncountable] the exact opposite of something; the act of causing something not to exist or to become its opposite This political system was the negation of democracy.
  2. 2[uncountable] disagreement or refusal She shook her head in negation.
  3. Word Origin late Middle English: from Latin negatio(n-), from the verb negare ‘deny’.
See the Oxford Advanced American Dictionary entry: negation