negation

名词 negation:

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

1. The author boxed the compass of negation in his article.
   该作者在文章中依次探讨了各种反面的意见。
2. Shaking the head is a sign of negation.
   摇头表示否认。
3. This theory is a negation of all traditional beliefs.
   这理论否定了一切传统信念。

ne.ga.tion

n.（名词）
The act or process of negating.
否定：否认的行为或程序
A denial, contradiction, or negative statement.
否定，反对或否定的原则
The opposite or absence of something regarded as actual, positive, or affirmative.
不存在：被认作为事实的，积极的或肯定的事物的反义词或缺乏

【引伸】
nega.tional
adj.（形容词）