contradiction

ot noun

1. The act of contradicting. His contradiction of the proposal was very interesting.
2. A statement that contradicts itself, i.e., a statement that makes a claim that the same thing is true and that it is false at the same time and in the same senses of the terms. There is a contradiction in Clarence Page's statement that a woman should have the right to choose and decide for herself whether to have an abortion, and at the same time she should not have that right.
3. A logical inconsistency among two or more elements or propositions. Marx believed that the contradictions of capitalism would lead to socialism.
4. A proposition that is false for all values of its variables.